CERN Accelerating science

CERN Document Server Sök i 140 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 0.52 sekunder. 
1.
Observation of the decay $B_s^0\to\bar{D}^0\phi$ / LHCb collaboration
First observation of the decay $B_s^0\to\overline{D^0}\phi$ is reported using $pp$ collision data, corresponding to an integrated luminosity of 1.0 $fb^{-1}$, collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. The significance of the signal is 6.2 standard deviations. [...]
arXiv:1308.4583; LHCB-PAPER-2013-035; CERN-PH-EP-2013-150; LHCB-PAPER-2013-035; CERN-PH-EP-2013-150.- Geneva : CERN, 2013 - 9 p. - Published in : Phys. Lett. B 727 (2013) 403-411 APS published version, local copy: PDF; Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
2.
Model-independent search for $CP$ violation in $D^{0} \to K^{-}K^{+}\pi^{-}\pi^{+}$ and $D^{0} \to \pi^{-}\pi^{+}\pi^{+}\pi^{-}$ decays / LHCb collaboration
A search for $CP$ violation in the phase-space structures of $D^{0}$ and $\bar{D^{0}}$ decays to the final states $K^{-}K^{+}\pi^{-}\pi^{+}$ and $\pi^{-}\pi^{+}\pi^{+}\pi^{-}$ is presented. The search is carried out with a data set corresponding to an integrated luminosity of 1.0 fb$^{−1}$ collected in 2011 by the LHCb experiment in $pp$ collisions at a centre-of-mass energy of 7 TeV. [...]
arXiv:1308.3189; CERN-PH-EP-2013-151; LHCB-PAPER-2013-041; CERN-PH-EP-2013-151; LHCB-PAPER-2013-041.- Geneva : CERN, 2013-11-04 - 11 p. - Published in : Phys. Lett. B 726 (2013) 623-633 Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint
3.
Measurement of form-factor independent observables in the decay $B^{0} \to K^{*0} \mu^+ \mu^-$ / LHCb collaboration
We present a measurement of form-factor independent angular observables in the decay $B^0\to K^{*}(892)^{0}\mu^+ \mu^-$. The analysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb$^{-1}$, collected by the LHCb experiment in $pp$ collisions at a center-of-mass energy of 7TeV. [...]
arXiv:1308.1707; LHCB-PAPER-2013-037; CERN-PH-EP-2013-146; LHCB-PAPER-2013-037; CERN-PH-EP-2013-146.- Geneva : CERN, 2013-11-04 - 8 p. - Published in : Phys. Rev. Lett. 111 (2013) 191801 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
4.
First measurement of time-dependent $C\!P$ violation in $B^0_s \to K^+K^-$ decays / LHCb collaboration
Direct and mixing-induced $C\!P$-violating asymmetries in $B^0_s \to K^+K^-$ decays are measured for the first time using a data sample of $pp$ collisions, corresponding to an integrated luminosity of $1.0~\mathrm{fb}^{-1}$, collected with the LHCb detector at a centre-of-mass energy of $7~\mathrm{TeV}$. The results are $C_{KK} = 0.14 \pm 0.11 \pm 0.03$ and $S_{KK} = 0.30 \pm 0.12 \pm 0.04$, where the first uncertainties are statistical and the second systematic. [...]
arXiv:1308.1428; CERN-PH-EP-2013-144; LHCB-PAPER-2013-040; CERN-PH-EP-2013-144; LHCB-PAPER-2013-040.- Geneva : CERN, 2013-10 - 26 p. - Published in : JHEP 10 (2013) 183 APS published version, local copy: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
5.
Measurement of the $C\!P$ asymmetry in $B^+ \rightarrow K^+ \mu^+ \mu^-$ decays / LHCb collaboration
A measurement of the $C\!P$ asymmetry in $B^+ \rightarrow K^+ \mu^+ \mu^-$ decays is presented using $pp$ collision data, corresponding to an integrated luminosity of 1.0 fb $^{-1}$, recorded by the LHCb experiment during 2011 at a centre-of-mass energy of 7 TeV. The measurement is performed in seven bins of $\mu^+ \mu^-$ invariant mass squared in the range 0.05 < $q^{2}$ < 22.00 GeV$^{2}/c^4$, excluding the ${J\mskip -3mu/\mskip -2mu \psi\mskip 2mu}$ and $\psi{(2S)}$ resonance regions. [...]
arXiv:1308.1340; CERN-PH-EP-2013-145; LHCB-PAPER-2013-043; CERN-PH-EP-2013-145; LHCB-PAPER-2013-043.- Geneva : CERN, 2013-10-07 - 9 p. - Published in : Phys. Rev. Lett. 111 (2013) 151801 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint
6.
Observation of $B^0_s$-$\bar{B}^0_s$ mixing and measurement of mixing frequencies using semileptonic B decays / LHCb collaboration
The $B^0_s$ and $B^0$ mixing frequencies, $\Delta m_s$ and $\Delta m_d$, are measured using a data sample corresponding to an integrated luminosity of 1.0 fb$^{-1}$ collected by the LHCb experiment in $pp$ collisions at a centre of mass energy of 7 TeV during 2011. Around 1.8x10$^{6}$ candidate events are selected of the type $B^0_{(s)} \to D^-_{(s)} \mu^+$(+anything), where about half are from peaking and combinatorial backgrounds. [...]
arXiv:1308.1302; CERN-PH-EP-2013-143; LHCB-PAPER-2013-036; LHCB-PAPER-2013-036; CERN-PH-EP-2013-143.- Geneva : CERN, 2013-12-04 - 22 p. - Published in : Eur. Phys. J. C 73 (2013) 2655 Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
7.
Branching fraction and $CP$ asymmetry of the decays $B^+ \to K_{\rm \scriptscriptstyle S}^0 \pi^+$ and $B^+ \to K_{\rm \scriptscriptstyle S}^0 K^+$ / LHCb collaboration
An analysis of $B^+ \to K_{\rm \scriptscriptstyle S}^0 \pi^+$ and $B^+ \to K_{\rm \scriptscriptstyle S}^0 K^+$ decays is performed with the LHCb experiment. The $pp$ collision data used correspond to integrated luminosities of 1fb$^{-1}$ and 2fb$^{-1}$ collected at centre-of-mass energies of $\sqrt{s}=7\mathrm{\,Te\kern -0.1em V}$ and $\sqrt{s}=8\mathrm{\,Te\kern -0.1em V}$, respectively. [...]
arXiv:1308.1277; CERN-PH-EP-2013-147; LHCB-PAPER-2013-034; CERN-PH-EP-2013-147; LHCB-PAPER-2013-034.- Geneva : CERN, 2013-11-04 - 10 p. - Published in : Phys. Lett. B 726 (2013) 646-655 Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
8.
Measurement of the flavour-specific $CP$-violating asymmetry $a_{\rm sl}^s$ in $B_s^0$ decays / LHCb collaboration
The CP-violating asymmetry $a_{sl}^s$ is studied using semileptonic decays of $B_s^0$ and anti-$B_s^0$ mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample corresponding to an integrated luminosity of 1.0fb$^-1$. The reconstructed final states are $D_s^{\pm}\mu^{\mp}$, with the $D_s^{\pm}$ particle decaying in the $\phi\pi^{\pm}$ mode. [...]
arXiv:1308.1048; LHCB-PAPER-2013-033; CERN-PH-EP-2013-141; LHCB-PAPER-2013-033; CERN-PH-EP-2013-141.- Geneva : CERN, 2014-01-20 - 9 p. - Published in : Phys. Lett. B 728 (2014) 607-615 Article from SCOAP3: PDF; Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): LHCb-PAPER-2013-033-figures - ZIP; asls-paper-1fb-rev10 - PDF; asl_ANA_rev8 - PDF; Related supplementary data file(s): ZIP;
9.
First evidence for the two-body charmless baryonic decay $B^0 \to p \bar{p}$ / LHCb collaboration
The results of a search for the rare two-body charmless baryonic decays $B^0 \to p \bar{p}$ and $B_s^0 \to p \bar{p}$ are reported. The analysis uses a data sample, corresponding to an integrated luminosity of 0.9 fb$^{-1}$, of $pp$ collision data collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. [...]
arXiv:1308.0961; LHCB-PAPER-2013-038; CERN-PH-EP-2013-138; LHCB-PAPER-2013-038; CERN-PH-EP-2013-138.- Geneva : CERN, 2013-10 - 17 p. - Published in : JHEP 10 (2013) 005 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
10.
Study of $B_{\scriptscriptstyle (s)}^0 \to K_{\rm \scriptscriptstyle S}^0 h^{+} h^{\prime -}$ decays with first observation of $B_{\scriptscriptstyle s}^0 \to K_{\rm \scriptscriptstyle S}^0 K^{\pm} \pi^{\mp}$ and $B_{\scriptscriptstyle s}^0 \to K_{\rm \scriptscriptstyle S}^0 \pi^{+} \pi^{-}$ / LHCb collaboration
A search for charmless three-body decays of $B^0$ and $B_{\scriptscriptstyle s}^0$ mesons with a $K_{\rm \scriptscriptstyle S}^0$ meson in the final state is performed using the $pp$ collision data, corresponding to an integrated luminosity of $1.0\mathrm{\,fb}^{-1}$, collected at a centre-of-mass energy of $7\mathrm{\,Te\kern -0.1em V}$ recorded by the LHCb experiment. Branching fractions of the $B_{\scriptscriptstyle (s)}^0 \to K_{\rm \scriptscriptstyle S}^0 h^{+} h^{\prime -}$ decay modes ($h^{(\prime)} = \pi, K$), relative to the well measured $B^0 \to K_{\rm \scriptscriptstyle S}^0 \pi^{+} \pi^{-}$ decay, are obtained [...]
arXiv:1307.7648; CERN-PH-EP-2013-139; LHCB-PAPER-2013-042; CERN-PH-EP-2013-139; LHCB-PAPER-2013-042.- Geneva : CERN, 2013 - 22 p. - Published in : JHEP 10 (2013) 143 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint

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