# LHCb Papers

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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)

2014-11-05
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

2014-10-16
15:13
 Search for $CP$ violation in $D^0\to \pi^-\pi^+\pi^0$ decays with the energy test / LHCb Collaboration A search for time-integrated CP violation in the Cabibbo-suppressed decay $D^0\to\pi^-\pi^+\pi^0$ is performed using for the first time an unbinned model-independent technique known as the energy test [...] arXiv:1410.4170 ; LHCB-PAPER-2014-054 ; CERN-PH-EP-2014-251. - 2014. - 16 p. Related data file(s) - Preprint - Full text - Related supplementary data file(s)

2014-10-02
07:58
 Precision luminosity measurements at LHCb / LHCb collaboration Measuring cross-sections at the LHC requires the luminosity to be determined accurately at each centre-of-mass energy $\sqrt{s}$. [...] arXiv:1410.0149 ; LHCB-PAPER-2014-047 ; CERN-PH-EP-2014-221. - 2014. - 99 p. Preprint - Full text - Related supplementary data file(s) - Related data file(s)

2014-10-02
07:58
 Precision measurement of the mass and lifetime of the $\Xi_b^-$ baryon / LHCb collaboration We report on measurements of the mass and lifetime of the $\Xi_b^-$ baryon using about 1800 $\Xi_b^-$ decays reconstructed in a proton-proton collision data set corresponding to an integrated luminosity of 3.0 fb$^{-1}$ collected by the LHCb experiment. [...] arXiv:1409.8568 ; LHCB-PAPER-2014-048 ; CERN-PH-EP-2014-226. - 2014. - 7 p. Preprint - Full text - Related data file(s) - Related supplementary data file(s)

2014-10-01
16:01
 Measurement of the semileptonic $CP$ asymmetry in $B^0-\overline{B}{}^0$ mixing / LHCb Collaboration The semileptonic $CP$ asymmetry in $B^0-\overline{B}{}^0$ mixing, $a_{\rm sl}^d$, is measured in proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb$^{-1}$, recorded by the LHCb experiment. [...] arXiv:1409.8586 ; LHCB-PAPER-2014-053 ; CERN-PH-EP-2014-237. - 2014. - 9 p. Related data file(s) - Preprint - Full text - Related supplementary data file(s)