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2018-07-21
11:09
Multiplicity dependence of strangeness and hadronic resonance production in pp and p-Pb collisions with ALICE at the LHC / Dash, Ajay Kumar
One of the key results of the LHC Run 1 was the observation of an enhanced production of strange particles in high multiplicity pp and p--Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 7 and 5.02 TeV, respectively. [...]
arXiv:1807.07469.
- 5 p.
Full text - Fulltext

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2018-07-21
11:09
Non-strange and strange D-meson and charm-baryon production in heavy-ion collisions measured with ALICE at the LHC / Peng, Xinye
We present recent result on strange and non-strange D-meson production measured with ALICE in Pb--Pb collisions at the LHC. [...]
arXiv:1807.07286.
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00009 The $\Lambda_{{\rm c}}^+/{\rm D^0}$ ratio in Pb--Pb collisions at $\sqrt{s_{\scriptscriptstyle \rm NN}}$ = 5.02 TeV, compared with that in pp and p--Pb collisions (left), and $\Lambda_{{\rm c}}^+$-baryon $R_{\rm AA}$ in 0-80\% Pb--Pb collisions at 5.02 TeV compared to average non-strange D-meson, ${\rm D}_{\rm s}^+$-meson, $\pi ^\pm$ and charged particle $R_{\rm AA}$ in 0-10\% centrality class - 00007 The $\Lambda_{{\rm c}}/{\rm D^0}$ raito in pp collisions at $\sqrt{s}$ = 7 TeV and in p--Pb collisions at $\sqrt{s_{\scriptscriptstyle \rm NN}}$ = 5.02 TeV, compared with model predictions (left) and $\Lambda/{\rm K}^0_{\rm s}$, ${\rm p}/{\pi}$ ratios in pp (middle) and p--Pb (right) collisions. - 00006 Non-strange D-meson $R_{\rm AA}$ in the 0-10\% centrality class (left) and elliptic flow $v_{2}$ in the 30-50\% centrality class~\cite{v2} (right), compared with models predictions~\cite{LBT,MCsHQ,PHSD,POWLANG,Uphoff:2014hza,He:2014cla}. - 00011 Non-strange D-meson $R_{\rm AA}$ in the 0-10\% centrality class (left) and elliptic flow $v_{2}$ in the 30-50\% centrality class~\cite{v2} (right), compared with models predictions~\cite{LBT,MCsHQ,PHSD,POWLANG,Uphoff:2014hza,He:2014cla}. - 00008 The $\Lambda_{{\rm c}}^+/{\rm D^0}$ ratio in Pb--Pb collisions at $\sqrt{s_{\scriptscriptstyle \rm NN}}$ = 5.02 TeV, compared with that in pp and p--Pb collisions (left), and $\Lambda_{{\rm c}}^+$-baryon $R_{\rm AA}$ in 0-80\% Pb--Pb collisions at 5.02 TeV compared to average non-strange D-meson, ${\rm D}_{\rm s}^+$-meson, $\pi ^\pm$ and charged particle $R_{\rm AA}$ in 0-10\% centrality class - Fulltext - 00010 The $\Lambda_{{\rm c}}/{\rm D^0}$ raito in pp collisions at $\sqrt{s}$ = 7 TeV and in p--Pb collisions at $\sqrt{s_{\scriptscriptstyle \rm NN}}$ = 5.02 TeV, compared with model predictions (left) and $\Lambda/{\rm K}^0_{\rm s}$, ${\rm p}/{\pi}$ ratios in pp (middle) and p--Pb (right) collisions. - Fulltext

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2018-07-21
11:09
A uniqueness theorem for warped $N>16$ Minkowski backgrounds with fluxes / Lautz, Sebastian (King's Coll. London, Dept. Math) ; Papadopoulos, George (King's Coll. London, Dept. Math ; CERN)
We demonstrate that warped Minkowski space backgrounds, $\mathbb{R}^{n-1,1}\times_w M^{d-n}$, $n\geq3$, that preserve strictly more than 16 supersymmetries in $d=11$ and type II $d=10$ supergravities and with fields which may not be smooth everywhere are locally isometric to the $\mathbb{R}^{d-1,1}$ Minkowski vacuum. [...]
arXiv:1807.01783.
- 7 p.
Preprint

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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

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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.
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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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