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Senast inlagda poster:
2018-07-20
18:21
Search for charged Higgs bosons decaying via $H^{\pm} \to \tau^{\pm}\nu_{\tau}$ in the $\tau$+jets and $\tau$+lepton final states with 36 fb$^{-1}$ of $pp$ collision data recorded at $\sqrt{s} = 13$ TeV with the ATLAS experiment
Charged Higgs bosons produced either in top-quark decays or in association with a top-quark, subsequently decaying via $H^{\pm} \to \tau^{\pm}\nu_{\tau}$, are searched for in 36.1 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV recorded with the ATLAS detector. [...]
CERN-EP-2018-148.
- 2018.
Fulltext - Previous draft version

Detaljerad journal - Similar records
2018-07-20
04:10
Higher moment fluctuations of identified particle distributions from ALICE / Behera, Nirbhay Kumar
Cumulants of conserved charges fluctuations are regarded as a potential tool to study the criticality in the QCD phase diagram and to determine the freeze-out parameters in a model-independent way. [...]
arXiv:1807.06780.
- 4 p.
Full text - 00011 Energy dependence of $\mathrm{C}_{3}/\mathrm{C}_{2}$ and $\mathrm{C}_{4}/\mathrm {C}_{2}$ of net-proton distributions for the most central collisions. - 00007 Energy dependence of $\mathrm{C}_{3}/\mathrm{C}_{2}$ and $\mathrm{C}_{4}/\mathrm {C}_{2}$ of net-proton distributions for the most central collisions. - 00013 (From left to right) Centrality dependence of $\mathrm{C}_{2}$, $\mathrm{C}_{3}$ and $\mathrm{C}_{4}$ of net-proton distributions in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV. The the vertical lines and boxes represents the statistical and systematic uncertainties, respectively. - 00009 (From left to right) Centrality dependence of $\mathrm{C}_{2}$, $\mathrm{C}_{3}$ and $\mathrm{C}_{4}$ of net-proton distributions in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV. The the vertical lines and boxes represents the statistical and systematic uncertainties, respectively. - 00008 (From left to right) Centrality dependence of $\mathrm{C}_{2}$, $\mathrm{C}_{3}$ and $\mathrm{C}_{4}$ of net-proton distributions in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV. The the vertical lines and boxes represents the statistical and systematic uncertainties, respectively. - 00010 Centrality dependence of $\mathrm{C}_{3}/\mathrm{C}_{2}$ and $\mathrm{C}_{4}/\mathrm {C}_{2}$ of net-proton distributions in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV. The the vertical lines and boxes represents the statistical and systematic uncertainties, respectively. - 00012 Centrality dependence of $\mathrm{C}_{3}/\mathrm{C}_{2}$ and $\mathrm{C}_{4}/\mathrm {C}_{2}$ of net-proton distributions in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 and 5.02 TeV. The the vertical lines and boxes represents the statistical and systematic uncertainties, respectively. - Fulltext

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2018-07-20
04:10
Elliptic polylogarithms and two-loop Feynman integrals / Broedel, Johannes ; Duhr, Claude ; Dulat, Falko ; Penante, Brenda ; Tancredi, Lorenzo
We review certain classes of iterated integrals that appear in the computation of Feynman integrals that involve elliptic functions. [...]
arXiv:1807.06238 ; CERN-TH-2018-163 ; CP3-18-45 ; HU-EP-18-22 ; HU-Mathematik-2018-08 ; SLAC-PUB-17302.
- 10 p.
Fulltext - Fulltext

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2018-07-20
04:10
Exploring the Phase Space of Jet Splittings at ALICE using Grooming and Recursive Techniques / Andrews, Harry Arthur
Hard splittings in the evolution of a jet may be modified by the presence of a dense strongly interacting medium. [...]
arXiv:1807.06439.
- 4 p.
00008 Lund kinematical diagram representation of splittings with limits imposed by a jet resolution $R$ (left)~\cite{THInst}, and populated for splittings in vacuum PYTHIA 6 Perugia 11 (right). - 00010 figure - 00009 figure - Fulltext - 00007 Lund kinematical diagram representation of splittings with limits imposed by a jet resolution $R$ (left)~\cite{THInst}, and populated for splittings in vacuum PYTHIA 6 Perugia 11 (right). - 00013 Raw Pb--Pb distributions of $z_{\rm{g}}$ for $R=0.4$ jets with varying minimum angular separation of subjets ($R_{\rm{g}}$) for jets with $ 80 \leq \pTjetchrec < 120$ GeV/$c$. The distributions are normalised to the total number of jets in the sample in this \pTjetchrec ~bin without cuts on $R_{\rm{g}}$. - 00011 Raw Pb--Pb distributions of $z_{\rm{g}}$ for $R=0.4$ jets with varying minimum angular separation of subjets ($R_{\rm{g}}$) for jets with $ 80 \leq \pTjetchrec < 120$ GeV/$c$. The distributions are normalised to the total number of jets in the sample in this \pTjetchrec ~bin without cuts on $R_{\rm{g}}$. - 00012 figure - Fulltext

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2018-07-20
04:10
Heavy-flavour hadron decay leptons in Pb--Pb and Xe--Xe collisions at the LHC with ALICE / Dubla, Andrea
Heavy quarks, i.e. [...]
arXiv:1807.05382.
-
Full text - 00009 Left: Comparison of the $R_{\rm AA}$ of electrons from beauty-hadron decays (red markers) with the one from charm- plus beauty-hadron decays (black markers) in Pb--Pb collisions at $\sqrt{s}$ = 5.02 TeV. Right: $R_{\rm AA}$ of electrons from beauty hadron decay in comparison with models implementing mass-dependent energy loss \cite{EPOS, Djordjevic, PHSD} in Pb--Pb collisions at $\sqrt{s}$ = 5.02 TeV. - 00010 Left: $R_{\rm AA}$ of electrons from heavy-flavour hadron decays as a function of $p_{\rm T}$ in central (0-10\%) Pb--Pb (black and grey markers) and in p--Pb (blue markers) collisions \cite{rpPbelectron} at $\sqrt{s}$ = 5.02 TeV. Right: $R_{\rm AA}$ of electrons from heavy-flavour hadron decays at $\sqrt{s}$ = 2.76 TeV in comparison with model calculations with and without the inclusion of the EPS09 shadowing parameterisations \cite{POWLANG, EPOS, TAMU}. - 00007 Nuclear modification factors of electrons (black markers) and muons (red markers) from heavy-flavour hadron decay in central (left panel) and semi-central (right panel) Xe--Xe collisions at $\sqrt{s_{\rm NN}}$ = 5.44 TeV. - 00006 Left: Comparison of the $R_{\rm AA}$ of electrons from beauty-hadron decays (red markers) with the one from charm- plus beauty-hadron decays (black markers) in Pb--Pb collisions at $\sqrt{s}$ = 5.02 TeV. Right: $R_{\rm AA}$ of electrons from beauty hadron decay in comparison with models implementing mass-dependent energy loss \cite{EPOS, Djordjevic, PHSD} in Pb--Pb collisions at $\sqrt{s}$ = 5.02 TeV. - 00008 $p_\mathrm{T}$-differential production cross section for electrons from heavy-flavour hadron decay in pp collisions at several collision energies (from left to right panel: $\sqrt{s}$ = 2.76, 5.02, 7 and 13 TeV) in comparison with FONLL calculations \cite{FONLL}. - 00011 Left: $R_{\rm AA}$ of electrons from heavy-flavour hadron decays as a function of $p_{\rm T}$ in central (0-10\%) Pb--Pb (black and grey markers) and in p--Pb (blue markers) collisions \cite{rpPbelectron} at $\sqrt{s}$ = 5.02 TeV. Right: $R_{\rm AA}$ of electrons from heavy-flavour hadron decays at $\sqrt{s}$ = 2.76 TeV in comparison with model calculations with and without the inclusion of the EPS09 shadowing parameterisations \cite{POWLANG, EPOS, TAMU}. - Fulltext

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2018-07-20
04:10
HEP Software Foundation Community White Paper Working Group - Training, Staffing and Careers / HEP Software Foundation Collaboration
The rapid evolution of technology and the parallel increasing complexity of algorithmic analysis in HEP requires developers to acquire a much larger portfolio of programming skills. [...]
HSF-CWP-2017-02 ; HSF-CWP-2017-02 ; arXiv:1807.02875.
- 17 p.
Preprint

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2018-07-20
04:10
From modular forms to differential equations for Feynman integrals / Broedel, Johannes (Humboldt U., Berlin, Inst. Math.) ; Duhr, Claude (CERN ; Louvain U., CP3) ; Dulat, Falko (SLAC) ; Penante, Brenda (CERN) ; Tancredi, Lorenzo (CERN)
In these proceedings we discuss a representation for modular forms that is more suitable for their application to the calculation of Feynman integrals in the context of iterated integrals and the differential equation method. [...]
arXiv:1807.00842.
- 24 p.
Preprint

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2018-07-19
16:45
A strategy for a general search for new phenomena using data-derived signal regions and its application within the ATLAS experiment / ATLAS Collaboration
This paper describes a strategy for a general search used by the ATLAS Collaboration to find potential indications of new physics. [...]
arXiv:1807.07447 ; CERN-EP-2018-070.
- 2018. - 62 p, 62 p.
Full text - 00046 Flow diagram for the trigger and offline event selection strategy. The offline requirements are shown on the left of the dashed line and the trigger requirements are shown on the right of the dashed line. - 00033 The number of events in data, and for the different SM background predictions considered, for classes with large \met{}, one muon, one electron and ($b$-)jets (no photons). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. - 00028 The number of events in data, and for the different SM background predictions considered, for classes with one muon, one electron and ($b$-)jets (no photons or \met{}). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. - 00048 The number of events in data, and for the different SM background predictions considered, for classes with large \met{} and ($b$-)jets (no leptons or photons). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. - 00043 The number of events in data, and for the different SM background predictions considered, for classes with at least two leptons, at least one photon and ($b$-)jets (no \met{}). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. - 00040 The number of events in data, and for the different SM background predictions considered, for classes with one muon and ($b$-)jets (no electrons, photons or \met{}). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. - 00025 : - 00037 The number of events in data, and for the different SM background predictions considered, for classes with one electron and ($b$-)jets (no muons, photons or \met{}). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. - 00035 The number of events in data, and for the different SM background predictions considered, for classes with at least one photon and ($b$-)jets (no leptons or \met{}). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. In event classes with four or more data events, the $\gamma+\text{jets}$ and $\gamma\gamma+\text{jets}$ MC samples are scaled to data in the single-photon and diphoton event classes respectively. The hatched bands indicate the total uncertainty of the SM prediction. - 00036 The number of events in data, and for the different SM background predictions considered, for classes with one lepton, at least one photon and ($b$-)jets (no \met{}). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. - 00026 : The fraction of pseudo-experiments which have at least one, two and three \pchannel-values below a given $p_{\text{min}}$, given for both the pseudo-experiments generated from the nominal SM expectation and tested against the nominal expectation (dashed) and for those tested against the modified expectation (`SM, $t\bar{t}\gamma$ removed') in which the $t\bar{t}\gamma$ process is removed (solid). The \minv{} scan is shown in (a) and the \meff{} scan in (b). The scan results of the data tested against the modified background prediction are indicated with solid arrows. For reference the scan results under the SM hypothesis are plotted as dashed arrows. The largest deviation after removing the $t\bar{t}\gamma$ process from the background expectation is found in the \meff{} distribution of the $1e1\gamma1b2j$ event class. The distributions of the data and the expectation with both $t\bar{t}\gamma$ included and $t\bar{t}\gamma$ removed are shown in (c) and (d) respectively. : Caption not extracted - 00044 The number of events in data, and for the different SM background predictions considered, for classes with two same-flavour leptons and ($b$-)jets (no photons or \met{}). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. - 00027 : The fraction of pseudo-experiments which have at least one, two and three \pchannel-values below a given $p_{\min}$, given for both the pseudo-experiments generated from the nominal SM expectation and tested against the nominal expectation (dashed) and for those tested against the modified expectation (`SM, $WZ$ removed') in which the $WZ$ diboson process is removed (solid). The \minv{} scan is shown in (a) and the \meff{} scan in (b). The scan results of the data tested against the modified background prediction are indicated with solid arrows. For reference the scan results under the SM hypothesis are plotted as dashed arrows. The largest deviation after removing the $WZ$ process from the background expectation is found in the \meff{} distribution of the $3\mu$ event class. The distributions of the data and the expectation with both $WZ$ included and $WZ$ removed are shown in (c) and (d) respectively. : Caption not extracted - 00039 The number of events in data, and for the different SM background predictions considered, for classes with three or four leptons and ($b$-)jets (no photons or \met{}). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. - 00031 The number of events in data, and for the different SM background predictions considered, for classes with large \met{}, at least one photon, leptons and ($b$-)jets. The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. - 00032 The number of events in data, and for the different SM background predictions considered, for classes with ($b$-)jets (no \met{}, leptons or photons). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. In event classes with four or more data events, the multijet MC sample is scaled to data. The hatched bands indicate the total uncertainty of the SM prediction. - 00034 : Caption not extracted - 00041 The number of events in data, and for the different SM background predictions considered, for classes with large \met{}, one lepton and ($b$-)jets (no photons). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. This figure shows 60 out of 704 event classes, the remaining event classes can be found in \Figrange{\ref{fig:global2}}{\ref{fig:global14}} of \App{\ref{appendixA3}}. - 00038 The number of events in data, and for the different SM background predictions considered, for classes with large \met{}, at least one pair of same flavour leptons and ($b$-)jets (no photons). The classes are labelled according to the multiplicity and type ($e$, $\mu$, $\gamma$, $j$, $b$, $\met$) of the reconstructed objects for the given event class. The hatched bands indicate the total uncertainty of the SM prediction. - 00029 : Caption not extracted - 00030 : : Example distributions showing the region of interest (ROI), i.e.\ the region with the smallest \pvalue-value, between the vertical dashed lines. (a) $\met{} 1\gamma 3j$ channel, which has the largest deviation in the \minv{} scan. (b) $1\mu 1e 4b 2j$ channel, which has the largest deviation in the \meff{} scan. (c) An upward fluctuation in the \minv{} distribution of the $1e 1\gamma 2b 2j$ channel. (d) A downward fluctuation in the \meff{} distribution of the $6j$ channel. (e) A downward fluctuation in the \minv{} distribution of the $\met{} 2\mu 1j$ channel. (f) An upward fluctuation in the \meff{} distribution of the $\met 3j$ channel. The hatched band includes all systematic and statistical uncertainties from MC simulations. In the ratio plots the inner solid uncertainty band shows the statistical uncertainty from MC simulations, the middle solid band includes the experimental systematic uncertainty, and the hatched band includes the theoretical systematic uncertainty. - 00049 : Caption not extracted - 00047 : - 00045 : Caption not extracted - 00042 : - Fulltext - Fulltext

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2018-07-18
20:42
Search for dark matter particles produced in association with a top quark pair at $\sqrt{s} = $ 13 TeV / CMS Collaboration
A search is performed for dark matter particles produced in association with a top quark pair in proton-proton collisions at $\sqrt{s} = $ 13 TeV. [...]
arXiv:1807.06522 ; CMS-EXO-16-049 ; CERN-EP-2018-183 ; CMS-EXO-16-049-003.
- 2018.
Fulltext - Fulltext - 00011 The 95\% observed and median expected \CL upper limits on the coupling strength of the mediator to the standard model quarks under the assumption that $\Pg_{\chi}=1$. A dark matter particle with a mass of 1\GeV is assumed. The green and yellow bands indicate respectively the 68\% and 95\% probability intervals around the expected limit. The interpretations for a scalar (\cmsLeft) and a pseudoscalar (\cmsRight) mediator are shown. - 00012 The 95\% observed and median expected \CL upper limits on the coupling strength of the mediator to the standard model quarks under the assumption that $\Pg_{\chi}=1$. A dark matter particle with a mass of 1\GeV is assumed. The green and yellow bands indicate respectively the 68\% and 95\% probability intervals around the expected limit. The interpretations for a scalar (\cmsLeft) and a pseudoscalar (\cmsRight) mediator are shown. - 00010 The 95\% observed and median expected \CL upper limits on the coupling strength of the mediator to the standard model quarks under the assumption that $\Pg_{\chi}=1$. A dark matter particle with a mass of 1\GeV is assumed. The green and yellow bands indicate respectively the 68\% and 95\% probability intervals around the expected limit. The interpretations for a scalar (\cmsLeft) and a pseudoscalar (\cmsRight) mediator are shown. - 00013 The 95\% observed and median expected \CL upper limits on the coupling strength of the mediator to the standard model quarks under the assumption that $\Pg_{\chi}=1$. A dark matter particle with a mass of 1\GeV is assumed. The green and yellow bands indicate respectively the 68\% and 95\% probability intervals around the expected limit. The interpretations for a scalar (\cmsLeft) and a pseudoscalar (\cmsRight) mediator are shown. - 00008 Selected $\ptmiss$ distributions in SRs: 2RTT SR for the all-hadronic (\cmsUpperLeft), the $\ell+$jets (\cmsUpperRight), and the different-flavor, $\mtll>110\GeV$ SR in the dileptonic channel (\cmsLowerRight). The solid red line shows the expectation for a signal with $m_\Pa = 100\GeV$ and $m_{\chi} = 1\GeV$. The last bin contains the overflow events. The lower panel shows the ratio of the observed to the fitted distribution (points), and the ratio of the background expectation before the fit to the fitted distribution (dashed magenta line). The vertical bars indicate the statistical uncertainty on the data. The horizontal bars on the rightmost plot indicate the bin width. The uncertainty bands in both panels include the statistical and systematic uncertainties on the total background. - 00010 Selected $\ptmiss$ distributions in SRs: 2RTT SR for the all-hadronic (\cmsUpperLeft), the $\ell+$jets (\cmsUpperRight), and the different-flavor, $\mtll>110\GeV$ SR in the dileptonic channel (\cmsLowerRight). The solid red line shows the expectation for a signal with $m_\Pa = 100\GeV$ and $m_{\chi} = 1\GeV$. The last bin contains the overflow events. The lower panel shows the ratio of the observed to the fitted distribution (points), and the ratio of the background expectation before the fit to the fitted distribution (dashed magenta line). The vertical bars indicate the statistical uncertainty on the data. The horizontal bars on the rightmost plot indicate the bin width. The uncertainty bands in both panels include the statistical and systematic uncertainties on the total background. - 00007 Selected $\ptmiss$ distributions in SRs: 2RTT SR for the all-hadronic (\cmsUpperLeft), the $\ell+$jets (\cmsUpperRight), and the different-flavor, $\mtll>110\GeV$ SR in the dileptonic channel (\cmsLowerRight). The solid red line shows the expectation for a signal with $m_\Pa = 100\GeV$ and $m_{\chi} = 1\GeV$. The last bin contains the overflow events. The lower panel shows the ratio of the observed to the fitted distribution (points), and the ratio of the background expectation before the fit to the fitted distribution (dashed magenta line). The vertical bars indicate the statistical uncertainty on the data. The horizontal bars on the rightmost plot indicate the bin width. The uncertainty bands in both panels include the statistical and systematic uncertainties on the total background. - 00011 Selected $\ptmiss$ distributions in SRs: 2RTT SR for the all-hadronic (\cmsUpperLeft), the $\ell+$jets (\cmsUpperRight), and the different-flavor, $\mtll>110\GeV$ SR in the dileptonic channel (\cmsLowerRight). The solid red line shows the expectation for a signal with $m_\Pa = 100\GeV$ and $m_{\chi} = 1\GeV$. The last bin contains the overflow events. The lower panel shows the ratio of the observed to the fitted distribution (points), and the ratio of the background expectation before the fit to the fitted distribution (dashed magenta line). The vertical bars indicate the statistical uncertainty on the data. The horizontal bars on the rightmost plot indicate the bin width. The uncertainty bands in both panels include the statistical and systematic uncertainties on the total background. - 00009 Selected $\ptmiss$ distributions in SRs: 2RTT SR for the all-hadronic (\cmsUpperLeft), the $\ell+$jets (\cmsUpperRight), and the different-flavor, $\mtll>110\GeV$ SR in the dileptonic channel (\cmsLowerRight). The solid red line shows the expectation for a signal with $m_\Pa = 100\GeV$ and $m_{\chi} = 1\GeV$. The last bin contains the overflow events. The lower panel shows the ratio of the observed to the fitted distribution (points), and the ratio of the background expectation before the fit to the fitted distribution (dashed magenta line). The vertical bars indicate the statistical uncertainty on the data. The horizontal bars on the rightmost plot indicate the bin width. The uncertainty bands in both panels include the statistical and systematic uncertainties on the total background. - 00009 Selected $\ptmiss$ distributions in SRs: 2RTT SR for the all-hadronic (\cmsUpperLeft), the $\ell+$jets (\cmsUpperRight), and the different-flavor, $\mtll>110\GeV$ SR in the dileptonic channel (\cmsLowerRight). The solid red line shows the expectation for a signal with $m_\Pa = 100\GeV$ and $m_{\chi} = 1\GeV$. The last bin contains the overflow events. The lower panel shows the ratio of the observed to the fitted distribution (points), and the ratio of the background expectation before the fit to the fitted distribution (dashed magenta line). The vertical bars indicate the statistical uncertainty on the data. The horizontal bars on the rightmost plot indicate the bin width. The uncertainty bands in both panels include the statistical and systematic uncertainties on the total background. - 00013 The exclusion limits at 95\% \CL on the signal strength $\mu=\sigma/\sigma_{\text{th}}$ computed as a function of the mediator and dark matter mass, assuming a scalar (\cmsLeft) and pseudoscalar (\cmsRight) mediator. The mediator couplings are assumed to be $\gq=\Pg_{\chi}=1$. The dashed magenta lines represent the 68\% probability interval around the expected limit. The observed limit contour is almost coincident with the boundary of the 68\% probability interval. - 00007 The exclusion limits at 95\% \CL on the signal strength $\mu=\sigma/\sigma_{\text{th}}$ computed as a function of the mediator and dark matter mass, assuming a scalar (\cmsLeft) and pseudoscalar (\cmsRight) mediator. The mediator couplings are assumed to be $\gq=\Pg_{\chi}=1$. The dashed magenta lines represent the 68\% probability interval around the expected limit. The observed limit contour is almost coincident with the boundary of the 68\% probability interval. - 00012 The exclusion limits at 95\% \CL on the signal strength $\mu=\sigma/\sigma_{\text{th}}$ computed as a function of the mediator and dark matter mass, assuming a scalar (\cmsLeft) and pseudoscalar (\cmsRight) mediator. The mediator couplings are assumed to be $\gq=\Pg_{\chi}=1$. The dashed magenta lines represent the 68\% probability interval around the expected limit. The observed limit contour is almost coincident with the boundary of the 68\% probability interval. - 00008 The exclusion limits at 95\% \CL on the signal strength $\mu=\sigma/\sigma_{\text{th}}$ computed as a function of the mediator and dark matter mass, assuming a scalar (\cmsLeft) and pseudoscalar (\cmsRight) mediator. The mediator couplings are assumed to be $\gq=\Pg_{\chi}=1$. The dashed magenta lines represent the 68\% probability interval around the expected limit. The observed limit contour is almost coincident with the boundary of the 68\% probability interval. - Fulltext - Fulltext

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2018-07-18
10:00
Search for $C\!P$ violation in $\Lambda^0_b \to p K^-$ and $\Lambda^0_b \to p \pi^-$ decays / LHCb Collaboration
A search for $C\!P$ violation in $\Lambda^0_b \to p K^-$ and $\Lambda^0_b \to p \pi^-$ decays is presented using a sample of $pp$ collisions collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb$^{-1}$. [...]
arXiv:1807.06544 ; LHCb-PAPER-2018-025 ; CERN-EP-2018-189 ; LHCB-PAPER-2018-025.
- 2018.
00019 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00014 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00017 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00015 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00018 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00016 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00013 Invariant-mass distributions: (top left) $m_{\proton \Km}$, (top right) $m_{\antiproton \Kp}$, (bottom left) $m_{\proton \pim}$ and (bottom right) $m_{\antiproton \pip}$ for candidates passing the (top) \SpK and (bottom) \Sppi selections. The results of the fits are superimposed. - 00011 Invariant-mass distributions: (top left) $m_{\proton \Km}$, (top right) $m_{\antiproton \Kp}$, (bottom left) $m_{\proton \pim}$ and (bottom right) $m_{\antiproton \pip}$ for candidates passing the (top) \SpK and (bottom) \Sppi selections. The results of the fits are superimposed. - 00010 Invariant-mass distributions: (top left) $m_{\proton \Km}$, (top right) $m_{\antiproton \Kp}$, (bottom left) $m_{\proton \pim}$ and (bottom right) $m_{\antiproton \pip}$ for candidates passing the (top) \SpK and (bottom) \Sppi selections. The results of the fits are superimposed. - 00012 Invariant-mass distributions: (top left) $m_{\proton \Km}$, (top right) $m_{\antiproton \Kp}$, (bottom left) $m_{\proton \pim}$ and (bottom right) $m_{\antiproton \pip}$ for candidates passing the (top) \SpK and (bottom) \Sppi selections. The results of the fits are superimposed. - Fulltext - Related data file(s) - Supplementary Information - Fulltext - Fulltext

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