# LHCb Papers

Najnovije dodano:
2014-12-11
15:26
 Search for long-lived particles decaying to jet pairs A search is presented for long-lived particles with a mass between 25 and 50 GeV$/c^2$ and a lifetime between 1 and 200 ps in a sample of proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=7$ TeV, corresponding to an integrated luminosity of 0.62 fb$^{-1}$, collected by the \lhcb detector. [...] CERN-PH-EP-2014-291 ; LHCB-PAPER-2014-062. - 2014. Fulltext - Previous draft version - Related data file(s)

2014-12-09
15:38
 Measurement of the inelastic $pp$ cross-section at a centre-of-mass energy of $\sqrt{s}=7$ TeV / LHCb Collaboration The cross-section for inelastic proton-proton collisions, with at least one prompt long-lived charged particle of transverse momentum $p_{\rm T}>0.2$ GeV/$c$ in the pseudorapidity range $2.0<\eta<4.5$, is measured by the LHCb experiment at a centre-of-mass energy of $\sqrt{s}=7$ TeV. [...] arXiv:1412.2500 ; LHCB-PAPER-2014-057 ; CERN-PH-EP-2014-285. - 2014. - 15 p. Related data file(s) - Preprint - Full text - Related supplementary data file(s)

2014-11-27
08:06
 Measurement of the lifetime of the $B_c^+$ meson using the $B_c^+ \rightarrow J/\psi\pi^+$ decay mode / LHCb collaboration The difference in total widths between the $B_c^+$ and $B^+$ mesons is measured using 3.0fb$^{-1}$ of data collected by the LHCb experiment in 7 and 8 TeV centre-of-mass energy proton-proton collisions at the LHC. [...] arXiv:1411.6899 ; CERN-PH-EP-2014-283 ; LHCB-PAPER-2014-060. - 2014. - 19 p. Preprint - Full text - Related data file(s)

2014-11-19
09:27
 Observation of two new $\Xi_b^-$ baryon resonances / LHCb collaboration Two structures are observed close to the kinematic threshold in the $\Xi_b^0\pi^-$ mass spectrum in a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb$^{-1}$ recorded by the LHCb experiment. [...] arXiv:1411.4849 ; CERN-PH-EP-2014-279 ; LHCB-PAPER-2014-061. - 2014. - 17 p. Preprint - Full text - Related data file(s) - Related supplementary data file(s)

2014-11-19
09:27
 Observation of the rare $B^0_s\to\mu^+\mu^-$ decay from the combined analysis of CMS and LHCb data / CMS and LHCb Collaborations A joint measurement is presented of the branching fractions $B^0_s\to\mu^+\mu^-$ and $B^0\to\mu^+\mu^-$ in proton-proton collisions at the LHC by the CMS and LHCb experiments. [...] arXiv:1411.4413 ; CERN-PH-EP-2014-220 ; CMS-BPH-13-007 ; LHCB-PAPER-2014-049. - 2014. - 46 p. Preprint - Full text - Related data file(s)

2014-11-13
07:50
 Precision measurement of $CP$ violation in $B_s^0 \to J/\psi K^+K^-$ decays / LHCb Collaboration The time-dependent $CP$ asymmetry in $B_s^0 \to J/\psi K^+K^-$ decays is measured using $pp$ collision data, corresponding to an integrated luminosity of $3.0$fb$^{-1}$, collected with the LHCb detector at centre-of-mass energies of $7$ and $8$TeV. [...] arXiv:1411.3104 ; LHCB-PAPER-2014-059 ; CERN-PH-EP-2014-271. - 2014. - 19 p. Preprint - Full text - Related supplementary data file(s) - Related data file(s)

2014-11-12
14:27
 Measurement of $B_c^+$ production in proton-proton collisions at $\sqrt{s}=8$ TeV / LHCb Collaboration Production of $B_c^+$ mesons in proton-proton collisions at a center-of-mass energy of 8 TeV is studied with data corresponding to an integrated luminosity of $2.0~{\rm fb^{-1}}$ recorded by the LHCb experiment. [...] arXiv:1411.2943 ; LHCB-PAPER-2014-050 ; CERN-PH-EP-2014-269. - 2014. - 16 p. Related data file(s) - Preprint - Full text - Related supplementary data files(s)

2014-11-06
16:27
 Measurement of the CP-violating phase $\beta$ in $B^0\rightarrow J/\psi \pi^+\pi^-$ decays and limits on penguin effects / LHCb Collaboration Time-dependent CP violation is measured in the $B^0\rightarrow J/\psi\pi^+\pi^-$ channel for each $\pi^+\pi^-$ resonant final state using data collected with an integrated luminosity of 3.0 fb$^{-1}$ in $pp$ collisions using the LHCb detector. [...] arXiv:1411.1634 ; LHCB-PAPER-2014-058 ; CERN-PH-EP-2014-268. - 2014. - 18 p. Related data file(s) - Preprint - Full text - Related supplementary data file(s)

2014-11-06
08:30
 Measurement of the Z+b-jet cross-section in pp collisions at $\sqrt{s}=7{\mathrm{\,Te\kern -0.1em V}}$ in the forward region / LHCb collaboration The associated production of a Z boson or an off-shell photon $\gamma^*$ with a bottom quark in the forward region is studied using proton-proton collisions at a centre-of-mass energy of $7{\mathrm{\,Te\kern -0.1em V}}$. [...] arXiv:1411.1264 ; LHCB-PAPER-2014-055 ; CERN-PH-EP-2014-267. - 2014. - 17 p. Preprint - Full text - Related data file(s)

2014-11-05
11:17
 Study of $\eta-\eta'$ mixing from measurement of $B^0_{(s)}\to J/\psi\eta^{(')}$ decay rates / LHCb Collaboration A study of $B^0$and $B^0_s$ meson decays into $J/\psi\eta$ and $J/\psi\eta^{\prime}$ final states is performed using a data set of proton-proton collisions at centre-of-mass energies of 7 and 8TeV, collected by the LHCb experiment and corresponding to 3.0fb$^{-1}$ of integrated luminosity. [...] arXiv:1411.0943 ; LHCB-PAPER-2014-056 ; CERN-PH-EP-2014-266. - 2014. - 26 p. Related data file(s) - Preprint - Full text