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2019-12-05
10:43
Isospin amplitudes in $\Lambda_b^0\to J/\psi \Lambda(\Sigma^0)$ and $\Xi_b^0\to J/\psi \Xi^0(\Lambda)$ decays / LHCb Collaboration
Ratios of isospin amplitudes in hadron decays are a useful probe of the interplay between weak and strong interactions, and allow searches for physics beyond the Standard Model. [...]
arXiv:1912.02110 ; CERN-EP-2019-268 ; LHCb-PAPER-2019-039 ; LHCB-PAPER-2019-039-003 ; LHCB-PAPER-2019-039. - 2019.
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2019-11-21
13:46
Precision measurement of the $\Xi_{cc}^{++}$ mass / LHCb Collaboration
A measurement of the $\Xi_{cc}^{++}$ mass is performed using data collected by the LHCb experiment between 2016 and 2018 in $pp$ collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.6 $\mathrm{fb}^{-1}$. [...]
arXiv:1911.08594 ; LHCb-PAPER-2019-037 ; CERN-EP-2019-258 ; LHCB-PAPER-2019-037. - 2019. - 18 p.
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2019-11-20
14:12
Observation of the semileptonic decay $B^+ \to p \bar{p} \mu^+ \nu_\mu$ / LHCb Collaboration
The Cabibbo-suppressed semileptonic decay $B^{+}\to p\overline{p}\mu^{+}\nu_{\mu}$ is observed for the first time using a sample of $pp$ collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.9fb$^{-1}$ at centre-of-mass energies of 7, 8 and 13TeV, respectively. [...]
arXiv:1911.08187 ; LHCb-PAPER-2019-034 ; CERN-EP-2019-236 ; LHCB-PAPER-2019-034. - 2019. - 23 p.
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2019-11-15
09:29
Determination of quantum numbers for several excited charmed mesons observed in $B^- \to D^{*+} \pi^- \pi^-$ decays / LHCb Collaboration
A four-body amplitude analysis of the $B^- \to D^{*+} \pi^- \pi^-$ decay is performed, where fractions and relative phases of the various resonances contributing to the decay are measured. [...]
arXiv:1911.05957 ; CERN-EP-2019-201 ; LHCb-PAPER-2019-027 ; LHCB-PAPER-2019-027. - 2019. - 37 p.
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2019-11-12
12:18
Measurement of the $\eta_c(1S)$ production cross-section in $pp$ collisions at $\sqrt{s} = 13$ TeV / LHCb Collaboration
Using a data sample corresponding to an integrated luminosity of $2.0\,fb^{-1}$, collected by the LHCb experiment, the production of the $\eta_c(1S)$ state in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=13 \text{ TeV}$ is studied in the rapidity range ${2.0 < y < 4.5}$ and in the transverse momentum range ${6.5 < p_{T} < 14.0\text{ GeV}}$. [...]
arXiv:1911.03326 ; LHCb-PAPER-2019-024 ; CERN-EP-2019-214 ; LHCB-PAPER-2019-024. - 2019. - 29 p.
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2019-11-04
11:32
Updated measurement of decay-time-dependent CP asymmetries in $D^0 \to K^+K^-$ and $D^0 \to \pi^+\pi^-$ decays / LHCb Collaboration
A search for decay-time-dependent charge-parity ($CP$) asymmetry in $D^0 \to K^+K^-$ and $D^0 \to \pi^+\pi^-$ decays is performed at the LHCb experiment using proton-proton collision data recorded at a center-of-mass energy of 13TeV, and corresponding to an integrated luminosity of 5.4fb$^{-1}$. [...]
arXiv:1911.01114 ; CERN-EP-2019-225 ; LHCb-PAPER-2019-032 ; LHCB-PAPER-2019-032. - 2019. - 20 p.
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2019-10-22
16:33
Measurement of $f_s / f_u$ variation with proton-proton collision energy and kinematics / LHCb Collaboration
The ratio of the $B^0_s$ and $B^+$ fragmentation fractions $f_s$ and $f_u$ is studied with $B^0_s \to J/\psi \phi$ and $B^+ \to J/\psi K^+$ decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8 and 13 TeV center-of-mass energies. [...]
arXiv:1910.09934 ; CERN-EP-2019-209 ; LHCb-PAPER-2019-020 ; LHCB-PAPER-2019-020. - 2019. - 26 p.
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2019-10-16
15:11
Search for $A' \to \mu^+ \mu^-$ decays / LHCb Collaboration
Searches are performed for both prompt-like and long-lived dark photons, $A'$, produced in proton-proton collisions at a center-of-mass energy of 13 TeV. [...]
arXiv:1910.06926 ; LHCb-PAPER-2019-031 ; CERN-EP-2019-212 ; LHCB-PAPER-2019-031. - 2019. - 27 p.
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2019-09-30
17:35
Search for the doubly charmed baryon $\Xi_{cc}^{+}$ / LHCb Collaboration
A search for the doubly charmed baryon $\Xi_{cc}^{+}$ is performed through its decay to the $\Lambda_c^+ K^- \pi^+$ final state, using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13$\mathrm{\,Te\kern -0.1em V}$. The data correspond to a total integrated luminosity of $9\,\mathrm{fb}^{-1}$. [...]
arXiv:1909.12273; LHCb-PAPER-2019-029; CERN-EP-2019-199; LHCB-PAPER-2019-029.- Geneva : CERN, 2019-11-19 - 15 p. - Published in : Sci. China Phys. Mech. Astron. 63 (2020) 221062 Fulltext: PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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2019-09-13
11:15
Amplitude analysis of the $B^+ \to \pi^+ \pi^+ \pi^-$ decay / LHCb Collaboration
The results of an amplitude analysis of the charmless three-body decay $B^+ \to \pi^+ \pi^+ \pi^-$, in which $CP$-violation effects are taken into account, are reported. [...]
arXiv:1909.05212 ; LHCb-PAPER-2019-017 ; CERN-EP-2019-157 ; LHCB-PAPER-2019-017. - 2019. - 78 p.
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