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LHCb Conference Contributions

Últimas adquisiciones:
2021-06-16
14:56
Heavy-ion physics and strong interactions at LHCb / Dembinski, Hans Peter (Technische Universitaet Dortmund (DE)) /LHCb Collaboration
The LHCb experiment is a single-arm spectrometer designed for the study of heavy flavour physics at the LHC, but also an excellent general purpose experiment for the study of quantum chromodynamics in the forward region. The forward acceptance make the LHCb data particular interesting for many applications in astroparticle physics, which are dominated by forward hadron production. [...]
LHCb-CONF-2021-001; CERN-LHCb-CONF-2021-001.- Geneva : CERN, 2021 - 4. Fulltext: PDF;
In : 55th Rencontres de Moriond on QCD and High Energy Interactions, Online, Online, 27 Mar - 3 Apr 2021

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2020-10-29
15:57
Updated LHCb combination of the CKM angle $\gamma$ /LHCb Collaboration
The latest results of the CKM angle $\gamma$ combination are presented for the 2020 LHCb Implications Workshop. New and updated inputs from $B^+ \to Dh^+$ ($D\to h^+h^-$), $B^+ \to Dh^+$ ($D \to K^0_{\rm S} h^+h^-$), $B^+ \to Dh^+$ ($D \to K^0_{\rm S} K^+ \pi^-$), $B^+ \to D^*h^+$ ($D\to h^+h^-$), $B^0 \to D K^{*0}$ ($D\to h^+h^-$ and $D\to h^+\pi^-\pi^+\pi^-$) and $B^0_s \to D^\mp_s K^\pm \pi^\mp \pi^\pm$ ($D^+_s \to h^+ h^- \pi^+$) decays are included, where $h = K$ or $\pi$. [...]
LHCb-CONF-2020-003; CERN-LHCb-CONF-2020-003.- Geneva : CERN, 2020 - mult.p. Fulltext: LHCb-CONF-2020-003-figures - ZIP; LHCb-CONF-2020-003 - PDF;
In : Implications of LHCb measurements and future prospects, Cern, Switzerland, 28 - 30 Oct 2020

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2020-08-06
15:37
Combination of the ATLAS, CMS and LHCb results on the $B^0_{(s)} \to \mu^+ \mu^-$ decays /LHCb Collaboration
A combination of results on the rare $B^0_{s} \to \mu^+ \mu^-$ and $B^0 \to \mu^+ \mu^-$ decays from the ATLAS, CMS, and LHCb experiments using data collected at the Large Hadron Collider between 2011 and 2016, is presented. The $B^0_{s} \to \mu^+ \mu^-$ branching fraction is obtained to be $\left( 2.69\,^{+\, 0.37}_{-\, 0.35} \right) \times 10^{-9}$ and the effective lifetime of the $B^0_{s} \to \mu^+ \mu^-$ decay is measured to be $\tau_{B^0_{s} \to \mu^+ \mu^-} = 1.91^{+0.37}_{-0.35} \rm{ps}$. [...]
LHCb-CONF-2020-002; CERN-LHCb-CONF-2020-002.- Geneva : CERN, 2020 - 11. Fulltext: LHCb-CONF-2020-002-figures - ZIP; LHCb-CONF-2020-002 - PDF;
In : 40th International Conference on High Energy Physics, Prague, Czech Republic, 28 Jul - 6 Aug 2020

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2020-08-04
17:05
Measurement of the CKM angle $\gamma$ in $B^\pm\to D K^\pm$ and $B^\pm \to D \pi^\pm$ decays with $D \to K_\mathrm S^0 h^\pm h^\mp$ /LHCb Collaboration
A measurement of $CP$-violating observables is performed using the decays ${B^\pm \to D K^\pm}$ and ${B^\pm \to D \pi^\pm}$, where the $D$ meson is reconstructed in one of the self-conjugate three-body final states $K_\mathrm S^0\pi^+\pi^-$ and $K_\mathrm S^0 K^+ K^-$ ($h^\pm h^\mp = \pi^\pm \pi^\mp, K^\pm K^\mp$). The decays are analysed in bins of the $D$-decay phase space, leading to a measurement that is independent of the modelling of the $D$-decay amplitude. [...]
LHCb-CONF-2020-001; CERN-LHCb-CONF-2020-001.- Geneva : CERN, 2020 - 24. Fulltext: figures - ZIP; LHCb-CONF-2020-001 - PDF;
In : 40th International Conference on High Energy Physics, Prague, Czech Republic, 28 Jul - 6 Aug 2020

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2019-11-14
10:25
Multiplicity-dependent modification of $\chi_{c1}(3872)$ and $\psi{(2S)}$ production in $pp$ collisions at $\sqrt{s}$= 8 TeV /LHCb Collaboration
In $pp$ collisions at $\sqrt{s}$ = 8 TeV, $\chi_{c1}(3872)$ and $\psi{(2S)}$ states are produced promptly at the primary collision vertex or in decays of $b$~hadrons. We study their relative production rates as a function of particle multiplicity. [...]
LHCb-CONF-2019-005; CERN-LHCb-CONF-2019-005.- Geneva : CERN, 2019 - 13. Fulltext: figures_CONF_2019_005 - ZIP; LHCb-CONF-2019-005 - PDF;
In : The 28th International Conference on Ultra-relativistic Nucleus-Nucleus Collisions, Wuhan, China, 3 - 9 Nov 2019

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2019-11-12
08:41
Measurement of $Z$ production cross-sections in proton-lead collisions at $ \sqrt{s_\rm{NN}}=8.16\ \rm{TeV}$ /LHCb Collaboration
This document describes a measurement of the $Z\to\mu^+\mu^-$ production cross-sections in proton-lead collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_\mathrm{NN}}=8.16\ \mathrm{TeV}$, using data collected by the LHCb detector in 2016. The dataset corresponds to an integrated luminosity of $30.8\,\mathrm{nb}^{-1}$, with $12.2\,\mathrm{nb}^{-1}$ for the forward ($p$Pb) configuration and $18.6\,\mathrm{nb}^{-1}$ for the backward (Pb$p$) configuration. [...]
LHCb-CONF-2019-003; CERN-LHCb-CONF-2019-003.- Geneva : CERN, 2019 - 16. Fulltext: LHCb-CONF-2019-003 - PDF; Figs_final - ZIP;
In : The 28th International Conference on Ultra-relativistic Nucleus-Nucleus Collisions, Wuhan, China, 3 - 9 Nov 2019

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2019-11-12
08:38
Study of prompt $D^0$ meson production in $p$Pb at $\sqrt{s_{\mathrm{NN}}}= 8.16$ TeV at LHCb /LHCb Collaboration
The production of prompt $D^0$ mesons in proton-lead collisions in the forward and backward configurations is studied. The data are collected with the LHCb detector at a center-of-mass energy per nucleon pair of $\sqrt{s_{\mathrm{NN}}}= 8.16$ TeV and correspond to an integrated luminosity of $12.2\pm0.3~\mathrm{nb}^{-1}$ ($18.6\pm0.5~\mathrm{nb}^{-1}$) in the forward (backward) configuration. [...]
LHCb-CONF-2019-004; CERN-LHCb-CONF-2019-004.- Geneva : CERN, 2019 - 17. Fulltext: LHCb-CONF-2019-004-figures - ZIP; LHCb-CONF-2019-004 - PDF;
In : The 28th International Conference on Ultra-relativistic Nucleus-Nucleus Collisions, Wuhan, China, 3 - 9 Nov 2019

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2019-09-16
15:22
Strong constraints on the $K^0_s \to \mu^+ \mu^-$ branching fraction /LHCb Collaboration
A search for the decay $K^0_s \to \mu^+ \mu^-$ is performed using proton-proton collision data, corresponding to an integrated luminosity of $5.6 \, \text {fb}^{-1}$, collected with the LHCb experiment during 2016, 2017 and 2018 at a center-of-mass energy of $13\,\mathrm{TeV}$. The observed number of signal decays is consistent with zero, yielding an upper limit of $\mathcal {B}( K^0_s \to \mu^+ \mu^-) < 2.2\,(2.6)\times 10^{-10}$ at $90$ $(95)\% ~\text {CL}$ [...]
LHCb-CONF-2019-002; CERN-LHCb-CONF-2019-002.- Geneva : CERN, 2019 - 9. Fulltext: PDF;
In : International Conference on Kaon Physics 2019, Perugia, Italy, 10 - 13 Sep 2019

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2019-05-17
11:08
Search for time-dependent $CP$ violation in $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays /LHCb Collaboration
A search for charge-parity ($CP$) violation in the time-dependent decay rates of $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays is reported. The data correspond to an integrated luminosity of $1.9\,{\rm fb}^{-1}$ collected by the LHCb detector in 2015--2016 in $pp$ collisions at a centre-of-mass energy of $13\,{\rm TeV}$ [...]
LHCb-CONF-2019-001; CERN-LHCb-CONF-2019-001.- Geneva : CERN, 2019 - 29. Fulltext: LHCb-CONF-2019-001 - PDF; LHCb-CONF-2019-001-figs - ZIP;

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2018-12-04
10:08
Prospects for searches for long-lived particles after the LHCb detector upgrades /LHCb Collaboration
The LHCb detector is a single-arm forward spectrometer covering the pseudorapidity range $2 < \eta < 5$, initially designed for the study of particles containing $b$ or $c$ quarks. As such, it is naturally suited for the search of beyond SM long-lived particles in a range of mass and lifetime not too dissimilar to heavy-flavour hadrons, as it has been demonstrated in several publications [...]
LHCb-CONF-2018-006; CERN-LHCb-CONF-2018-006.- Geneva : CERN, 2018 - 12. Fulltext: LHCb-CONF-2018-006 - PDF; LHCb_CONF_2018_006_figures - ZIP;

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