2019-10-03 13:53 |
Registre complet - Registres semblants
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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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Registre complet - Registres semblants
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2019-07-18 17:03 |
Precision measurement of the $\Lambda_c^+$, $\Xi_c^+$ and $\Xi_c^0$ baryon lifetimes
/ LHCb Collaboration
We report measurements of the lifetimes of the $\Lambda_c^+$, $\Xi_c^+$ and $\Xi_c^0$ charm baryons using proton-proton collision data at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb$^{-1}$, collected by the LHCb experiment. The charm baryons are reconstructed through the decays $\Lambda_c^+\to pK^-\pi^+$, $\Xi_c^+\to pK^-\pi^+$ and $\Xi_c^0\to pK^-K^-\pi^+$, and originate from semimuonic decays of beauty baryons. [...]
arXiv:1906.08350; LHCb-PAPER-2019-008; CERN-EP-2019-122; LHCB-PAPER-2019-008.-
2019-08-02 - 12 p.
- Published in : Phys. Rev. D 100 (2019) 032001
Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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Registre complet - Registres semblants
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2019-07-02 10:45 |
Observation of the $\Lambda_b^0\rightarrow \chi_{c1}(3872)pK^-$ decay
/ LHCb Collaboration
Using proton-proton collision data, collected with the LHCb detector and corresponding to 1.0, 2.0 and 1.9 fb$^{-1}$ of integrated luminosity at the centre-of-mass energies of 7, 8, and 13 TeV, respectively, the decay $\Lambda_b^0\to \chi_{c1}(3872)pK^-$ with $\chi_{c1}\to J/\psi\pi^+\pi^-$ is observed for the first time. The significance of the observed signal is in excess of seven standard deviations. [...]
arXiv:1907.00954; CERN-EP-2019-131; LHCb-PAPER-2019-023; LHCB-PAPER-2019-023.-
2019-09-03 - 21 p.
- Published in : JHEP 1909 (2019) 028
Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2019-023 - PDF; 1907.00954 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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Registre complet - Registres semblants
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2019-06-21 17:31 |
Updated measurement of time-dependent CP-violating observables in $B^0_s \to J/\psi K^+K^-$ decays
/ LHCb Collaboration
The decay-time-dependent {\it CP} asymmetry in $B^{0}_{s}\to J/\psi K^{+} K^{-}$ decays is measured using proton-proton collision data, corresponding to an integrated luminosity of $1.9\,\mathrm{fb^{-1}}$, collected with the LHCb detector at a centre-of-mass energy of $13\,\mathrm{TeV}$ in 2015 and 2016. Using a sample of approximately 117\,000 signal decays with an invariant $K^{+} K^{-}$ mass in the vicinity of the $\phi(1020)$ resonance, the {\it CP}-violating phase $\phi_s$ is measured, along with the difference in decay widths of the light and heavy mass eigenstates of the $B^{0}_{s}$-$\overline{B}^{0}_{s}$ system, $\Delta\Gamma_s$. [...]
arXiv:1906.08356; LHCb-PAPER-2019-013; CERN-EP-2019-108; LHCB-PAPER-2019-013.-
Geneva : CERN, 2019-08-22 - 42 p.
- Published in : Eur. Phys. J. C 79 (2019) 706
Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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Registre complet - Registres semblants
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2019-06-21 17:07 |
Measurement of $C\!P$ observables in the process $B^0 \to DK^{*0}$ with two- and four-body $D$ decays
/ LHCb Collaboration
Measurements of $C\!P$ observables in $B^0 \to DK^{*0}$ decays are presented, where $D$ represents a superposition of $D^0$ and $\bar{D}^0$ states. The $D$ meson is reconstructed in the two-body final states $K^+\pi^-$, $\pi^+ K^-$, $K^+K^-$ and $\pi^+\pi^-$, and, for the first time, in the four-body final states $K^+\pi^-\pi^+\pi^-$, $\pi^+ K^-\pi^+\pi^-$ and $\pi^+\pi^-\pi^+\pi^-$. [...]
arXiv:1906.08297; LHCb-PAPER-2019-021; CERN-EP-2019-111.-
Geneva : CERN, 2019-08-07 - 30 p.
- Published in : JHEP 1908 (2019) 041
Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2019-021 - PDF; 1906.08297 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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Registre complet - Registres semblants
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2019-06-03 12:12 |
Amplitude analysis of $B^\pm \to \pi^\pm K^+ K^-$ decays
/ LHCb Collaboration
The first amplitude analysis of the $B^\pm \to \pi^\pm K^+ K^-$ decay is reported based on a data sample corresponding to an integrated luminosity of 3.0 fb$^{−1}$ of $pp$ collisions recorded in 2011 and 2012 with the LHCb detector. The data is found to be best described by a coherent sum of five resonant structures plus a nonresonant component and a contribution from $\pi \pi \leftrightarrow KK$ $S$-wave rescattering. [...]
arXiv:1905.09244; LHCb-PAPER-2018-051; CERN-EP-2019-062; LHCB-PAPER-2018-051.-
Geneva : CERN, 2019-12-07 - 11 p.
- Published in : Phys. Rev. Lett. 123 (2019) 231802
Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2018-051 - PDF; 1905.09244 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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Registre complet - Registres semblants
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2019-05-16 15:50 |
Registre complet - Registres semblants
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2019-05-16 14:53 |
Registre complet - Registres semblants
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2019-05-16 14:31 |
Measurement of $CP$-violating and mixing-induced observables in $B_s^0 \to \phi\gamma$ decays
/ LHCb Collaboration
A time-dependent analysis of the $B_s^0 \to \phi\gamma$ decay rate is performed to determine the $CP$-violating observables $S_{\phi\gamma}$ and $C_{\phi\gamma}$, and the mixing-induced observable $\mathcal{A}^{\Delta}_{\phi\gamma}$. The measurement is based on a sample of $pp$ collision data recorded with the LHCb detector, corresponding to an integrated luminosity of 3 fb$^{-1}$ at center-of-mass energies of 7 and 8 TeV. [...]
arXiv:1905.06284; LHCb-PAPER-2019-015; CERN-EP-2019-077; LHCb-PAPER-2019-015; CERN-EP-2019-077; LHCB-PAPER-2019-015.-
2019-08-28 - 10 p.
- Published in : Phys. Rev. Lett. 123 (2019) 081802
Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;
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Registre complet - Registres semblants
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