2018-10-18
14:47 |
Study of $\Upsilon$ production in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV
/ LHCb Collaboration
The production of $\Upsilon (nS)$ mesons ($n=1,2,3$) in $p$Pb and Pb$p$ collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{NN}}=8.16$ TeV is measured by the LHCb experiment, using a data sample corresponding to an integrated luminosity of 31.8 nb$^{-1}$. The $\Upsilon (nS)$ mesons are reconstructed through their decays into two opposite-sign muons. [...]
arXiv:1810.07655; LHCb-PAPER-2018-035; CERN-EP-2018-267.-
Geneva : CERN, 2018-11-29 - 37 p.
- Published in : JHEP 11 (2018) 194
Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;
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2018-10-17
15:45 |
Measurement of the charm-mixing parameter $y_{CP}$
/ LHCb Collaboration
A measurement of the charm-mixing parameter $y_{CP}$ using $D^0 \to K^+ K^-$, $D^0 \to \pi^+ \pi^-$, and $D^0 \to K^- \pi^+$ decays is reported. The $D^0$ mesons are required to originate from semimuonic decays of $B^-$ and $\overline{B}^0$ mesons. [...]
arXiv:1810.06874; CERN-EP-2018-270 and LHCb-PAPER-2018-038; LHCb-PAPER-2018-038; CERN-EP-2018-270; LHCB-PAPER-2018-038.-
Geneva : CERN, 2019-01-08 - 10 p.
- Published in : 10.1103/PhysRevLett.122.011802
Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
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2018-10-05
14:01 |
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2018-09-21
11:55 |
Evidence for an $\eta_c(1S) \pi^-$ resonance in $B^0 \to \eta_c(1S) K^+\pi^-$ decays
/ LHCb Collaboration
A Dalitz plot analysis of $B^0 \to \eta_c(1S) K^+\pi^-$ decays is performed using data samples of $pp$ collisions collected with the LHCb detector at centre-of-mass energies of $\sqrt{s}=7,~8$ and $13$ TeV, corresponding to a total integrated luminosity of $4.7~\text{fb}^{-1}$. A satisfactory description of the data is obtained when including a contribution representing an exotic $\eta_c(1S) \pi^-$ resonant state. [...]
arXiv:1809.07416; LHCb-PAPER-2018-034; CERN-EP-2018-245.-
Geneva : CERN, 2018-12-17 - 39 p.
- Published in : Eur. Phys. J. C 78 (2018) 1019
Article from SCOAP3: PDF; Fulltext: 1809.07416 - PDF; LHCb-PAPER-2018-034 - PDF; Related data file(s): ZIP; External link: Figures, tables and other information
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2018-08-24
11:51 |
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2018-08-21
10:21 |
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2018-08-03
09:58 |
Angular moments of the decay $\Lambda_b^0 \rightarrow \Lambda \mu^{+} \mu^{-}$ at low hadronic recoil
/ LHCb Collaboration
An analysis of the angular distribution of the decay $\Lambda_b^0 \rightarrow \Lambda \mu^{+} \mu^{-}$ is presented, using data collected with the LHCb detector between 2011 and 2016 and corresponding to an integrated luminosity of approximately $5\,fb^{-1}$. Angular observables are determined using a moment analysis of the angular distribution at low hadronic recoil, corresponding to the dimuon invariant mass squared range $15 < q^{2} < 20\, GeV^2/c^4$. [...]
arXiv:1808.00264; CERN-EP-2018-197; LHCb-PAPER-2018-029.-
Geneva : CERN, 2018-09-26 - 27 p.
- Published in : JHEP 09 (2018) 146
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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$^{-1}$. The $C\!P$-violating asymmetries are measured to be $A_{\mathrm{CP}}^{pK^-} = -0.020 \pm 0.013\pm 0.019$ and $A_{\mathrm{CP}}^{p\pi^-} = -0.035 \pm 0.017 \pm 0.020 $, and their difference $A_{\mathrm{CP}}^{pK^-}-A_{\mathrm{CP}}^{p\pi^-} = 0.014 \pm 0.022 \pm 0.010$, where the first uncertainties are statistical and the second systematic. [...]
arXiv:1807.06544; LHCb-PAPER-2018-025; CERN-EP-2018-189.-
Geneva : CERN, 2018-12-10 - 10 p.
- Published in : Phys. Lett. B 787 (2018) 124-133
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2018-07-16
15:53 |
Measurement of $\Upsilon$ production in $pp$ collisions at $\sqrt{s}$= 13 TeV
/ LHCb Collaboration
The production cross-sections of $\Upsilon(1S)$, $\Upsilon(2S)$ and $\Upsilon(3S)$ mesons in proton-proton collisions at $\sqrt{s}$= 13 TeV are measured with a data sample corresponding to an integrated luminosity of $277 \pm 11$ $\rm pb^{-1}$ recorded by the LHCb experiment in 2015. The $\Upsilon$ mesons are reconstructed in the decay mode $\Upsilon\to\mu^{+}\mu^{-}$. [...]
LHCB-PAPER-2018-002; CERN-EP-2018-054; arXiv:1804.09214; LHCB-PAPER-2018-002.-
2018-07-20 - 26 p.
- Published in : JHEP 07 (2018) 134
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2018-07-06
10:57 |
First observation of the doubly charmed baryon decay $\Xi_{cc}^{++} \rightarrow \Xi_{c}^{+} \pi^{+}$
/ LHCb Collaboration
The doubly charmed baryon decay $\Xi_{cc}^{++} \rightarrow \Xi_{c}^{+} \pi^{+}$ is observed for the first time, with a statistical significance of $5.9\sigma$, confirming a recent observation of the baryon in the $\Lambda_c^{+} K^{-} \pi^{+} \pi^{+}$ final state. The data sample used corresponds to an integrated luminosity of $1.7\,\mathrm{fb}^{-1}$, collected by the LHCb experiment in $pp$ collisions at a center-of-mass energy of $13\mathrm{\,Te\kern -0.1em V}$ [...]
arXiv:1807.01919; LHCb-PAPER-2018-026; CERN-EP-2018-172; LHCB-PAPER-2018-026; LHCB-PAPER-2018-026.-
Geneva : CERN, 2018-10-18 - 10 p.
- Published in : Phys. Rev. Lett. 121 (2018) 162002
Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
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