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CERN Document Server Znaleziono 192 rekordów  1 - 10następnykoniec  skocz do rekordu: Szukanie trwało 1.38 sekund. 
1.
Observation of the suppressed decay $\Lambda^{0}_{b}\rightarrow p\pi^{-}\mu^{+}\mu^{-}$ / LHCb Collaboration
The suppressed decay $\Lambda^{0}_{b}\rightarrow p\pi^{-}\mu^{+}\mu^{-}$, excluding the $J/\psi$ and $\psi(2S)\rightarrow \mu^{+}\mu^{-}$ resonances, is observed for the first time with a significance of 5.5 standard deviations. The analysis is performed with proton-proton collision data corresponding to an integrated luminosity of $3\mathrm{fb}^{-1}$ collected with the LHCb experiment. [...]
arXiv:1701.08705; LHCB-PAPER-2016-049; CERN-EP-2016-312.- Geneva : CERN, 2017-04-06 - 16 p. - Published in : JHEP 04 (2017) 029 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Figures, tables and other information
2.
Measurement of $CP$ asymmetries in $D^{\pm}\rightarrow \eta^{\prime} \pi^{\pm}$ and $D_s^{\pm}\rightarrow \eta^{\prime} \pi^{\pm}$ decays / LHCb Collaboration
A search for $CP$ violation in $D^{\pm}\rightarrow \eta^{\prime} \pi^{\pm}$ and $D^{\pm}_{s}\rightarrow \eta^{\prime} \pi^{\pm}$ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of $3$ fb$^{-1}$, recorded by the LHCb experiment at centre-of-mass energies of $7$ and $8$ TeV. The measured $CP$-violating charge asymmetries are $A_{CP}(D^{\pm} \rightarrow \eta^{\prime} \pi^{\pm})=(-0.61\pm 0.72 \pm 0.53 \pm 0.12)\%$ and $A_{CP}(D^{\pm}_{s}\rightarrow \eta^{\prime} \pi^{\pm})=(-0.82\pm 0.36 \pm 0.22 \pm 0.27)\%$, where the first uncertainties are statistical, the second systematic, and the third are the uncertainties on the $A_{CP}(D^{\pm} \rightarrow K^0_S \pi^{\pm})$ and $A_{CP}(D^{\pm}_{s}\rightarrow \phi \pi^{\pm})$ measurements used for calibration. [...]
arXiv:1701.01871; LHCB-PAPER-2016-041; CERN-EP-2016-315.- Geneva : CERN, 2017-08-10 - 10 p. - Published in : Phys. Lett. B 771 (2017) 21-30 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Figures, tables and other information
3.
Measurement of the $b$-quark production cross-section in 7 and 13 TeV $pp$ collisions / LHCb Collaboration
Measurements of the cross-section for producing $b$ quarks in the reaction $pp \to b\overline{b}X$ are reported in $7$ and $13 TeV$ collisions at the LHC as a function of the pseudorapidity $\eta$ in the range $2<\eta<5$ covered by the acceptance of the LHCb experiment. The measurements are done using semileptonic decays of b-flavored hadrons decaying into a ground-state charmed hadron in association with a muon. [...]
arXiv:1612.05140; CERN-EP-2016-201; LHCB-PAPER-2016-031; LHCB-PAPER-2016-031; CERN-EP-2016-201.- Geneva : CERN, 2017-02-03 - 11 p. - Published in : Phys. Rev. Lett. Erratum submitted to PRL: PDF; Fulltext: arXiv:1612.05140 - PDF; 10.1103_PhysRevLett.118.052002 - PDF; Related data file(s): ZIP; External link: Figures, tables and other information
4.
Search for $CP$ violation in the phase space of $D^0\rightarrow\pi^+\pi^-\pi^+\pi^-$ decays / LHCb Collaboration
A search for time-integrated $CP$ violation in the Cabibbo-suppressed decay $\mbox{$D^0\rightarrow\pi^+\pi^-\pi^+\pi^-$}$ is performed using an unbinned, model-independent technique known as the energy test. This is the first application of the energy test in four-body decays. [...]
arXiv:1612.03207; LHCB-PAPER-2016-044; CERN-EP-2016-287.- Geneva : CERN, 2017-06-10 - 12 p. - Published in : Phys. Lett. B 769 (2017) 345-356 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
5.
Search for massive long-lived particles decaying semileptonically in the LHCb detector / LHCb Collaboration
A search is presented for massive long-lived particles decaying into a muon and two quarks. The dataset consists of proton-proton interactions at centre-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of 1 and 2 1/fb, respectively. [...]
arXiv:1612.00945; CERN-EP-2016-283; LHCB-PAPER-2016-047.- Geneva : CERN, 2017-04-10 - 25 p. - Published in : Eur. Phys. J. C 77 (2017) 224 Additional figure: PDF; Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Figures, tables and other information
6.
Search for decays of neutral beauty mesons into four muons / LHCb Collaboration
A search for the non-resonant decays $B^0_s \rightarrow \mu^{+}\mu^{-}\mu^{+}\mu^{-}$ and $B^0 \rightarrow \mu^{+}\mu^{-}\mu^{+}\mu^{-}$ is presented. The measurement is performed using the full Run 1 data set collected in proton-proton collisions by the LHCb experiment at the LHC. [...]
arXiv:1611.07704; LHCB-PAPER-2016-043; CERN-EP-2016-276.- Geneva : CERN, 2017-03-01 - 19 p. - Published in : JHEP 03 (2017) 001 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; Supplementary information: ZIP; External link: Figures, tables and other information
7.
Evidence for the two-body charmless baryonic decay $B^+ \to p \kern 0.1em\overline{\kern -0.1em\Lambda}$ / LHCb Collaboration
A search for the rare two-body charmless baryonic decay $B^+ \to p \bar\Lambda$ is performed with $pp$ collision data, corresponding to an integrated luminosity of $3\,\mbox{fb}^{-1}$, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of $B^+ \to p \bar\Lambda$ candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. [...]
arXiv:1611.07805; LHCB-PAPER-2016-048; CERN-EP-2016-275; CERN-EP-2016-275.- Geneva : CERN, 2017-04-28 - 18 p. - Published in : JHEP 04 (2017) 162 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
8.
Measurements of charm mixing and $C\!P$ violation using $D^0 \to K^\pm \pi^\mp$ decays / LHCb collaboration
Measurements of charm mixing and $C\!P$ violation parameters from the decay-time-dependent ratio of $ D^0 \to K^+ \pi^- $ to $ D^0 \to K^- \pi^+ $ decay rates and the charge-conjugate ratio are reported. The analysis uses $\overline{B}\to D^{*+} \mu^- X$, and charge-conjugate decays, where $D^{*+}\to D^0 \pi^+$, and $D^0\to K^{\mp} \pi^{\pm}$. [...]
arXiv:1611.06143; CERN-EP-2016-280; LHCB-PAPER-2016-033.- Geneva : CERN, 2017-03-23 - 14 p. - Published in : Phys. Rev. D
- Published in : Phys. Rev. D Erratum: PDF; Fulltext: 10.1103_PhysRevD.95.052004 - PDF; arXiv:1611.06143 - PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Figures, tables and other information
9.
Measurement of the CKM angle $\gamma$ from a combination of LHCb results / LHCb collaboration
A combination of measurements sensitive to the CKM angle $\gamma$ from LHCb is performed. The inputs are from analyses of time-integrated $B^{+}\rightarrow DK^+$, $B_{d}^{0} \rightarrow D K^{*0}$, $B_{d} \rightarrow D K^+ \pi^-$ and $B^{+} \rightarrow D K^+\pi^+\pi^-$ tree-level decays. [...]
arXiv:1611.03076; LHCB-PAPER-2016-032; CERN-EP-2016-270; LHCB-PAPER-2016-032; CERN-EP-2016-270.- Geneva : CERN, 2016-12-19 - 58 p. - Published in : JHEP 12 (2016) 087 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
10.
Measurement of $CP$ asymmetry in $D^0\rightarrow K^-K^+$ decays / LHCb collaboration
A measurement of the time-integrated $CP$ asymmetry in the Cabibbo-suppressed decay $D^0\rightarrow K^-K^+$ is performed using pp collision data, corresponding to an integrated luminosity of 3fb$^{-1}$, collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. The flavour of the charm meson at production is determined from the charge of the pion in $D^{*+}\rightarrow D^0 \pi^+$ and $D^{*-}\rightarrow \bar{D^0} \pi^-$ decays. [...]
arXiv:1610.09476; CERN-EP-2016-259; LHCB-PAPER-2016-035; CERN-EP-2016-259; LHCB-PAPER-2016-035.- Geneva : CERN, 2017-04-10 - 11 p. - Published in : Phys. Lett. B 767 (2017) 177-187 Article from SCOAP3: PDF; Fulltext: arXiv:1610.09476 - PDF; LHCb-PAPER-2016-035 - PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Figures, tables and other information

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