2013-04-25
12:00 |
Study of the $J/\psi$ production cross-section in proton-lead collisions at $\sqrt{s_{\rm {\small{NN}}}} = 5~\mathrm{TeV}$
/LHCb Collaboration
The production of $J/\psi$ mesons is studied in proton-lead collisions with the \mbox{LHCb} detector, at a proton-nucleon centre-of-mass energy $\sqrt{s_{\rm {\small{NN}}}} = 5~\mathrm{TeV}$ The nuclear attenuation factor is determined and results are compared with theoretical predictions. The analysis is based on a data sample corresponding to an integrated luminosity of about $1~\mathrm{nb}^{-1}$..
LHCb-CONF-2013-008; CERN-LHCb-CONF-2013-008.-
Geneva : CERN, 2013 - 15 p.
Fulltext: LHCb-CONF-2013-008 - PDF; figs - RAR;
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2013-04-05
09:50 |
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2013-04-05
09:38 |
Improved constraints on $\gamma$ from $B^\pm\to DK^\pm$ decays including first results on 2012 data
/LHCb Collaboration
Preliminary results for the CKM angle $\gamma$ are presented, from a combination of measurements using $B^\pm\to DK^\pm$ decays, where $D$ denotes an admixture of $D^0$ and $\overline{D}^0$ mesons. Results for the $D$ final states $K^+K^-$, $\pi^+\pi^-$, $K^\pm \pi^\mp$, and $K^\pm \pi^\mp \pi^\pm \pi^\mp$ are based on a dataset corresponding to $1\,{\rm fb}^-1$ of integrated luminosity recorded at $\sqrt{s}=7\,{\rm TeV}$ in 2011. [...]
LHCb-CONF-2013-006; CERN-LHCb-CONF-2013-006.-
Geneva : CERN, 2013 - 8 p.
Fulltext: LHCb-CONF-2013-006_Figures - ZIP; LHCb-CONF-2013-006 - PDF;
In : 14th International Conference on B-Physics at Hadron Machines, Bologna, Italy, 8 - 12 Apr 2013
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2013-03-19
10:51 |
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2013-03-18
09:11 |
Model-independent measurement of $CP$ violation parameters in $B^{\pm}\to(K^{0}_{\rm S}h^{+}h^{-})_{D}K^{\pm}$ decays
/LHCb Collaboration
The following $CP$ violating observables are measured in a model-independent analysis of $B^{\pm}\to(K^{0}_{\rm S}h^{+}h^{-})_{D}K^{\pm}$ (where $h = \pi, K$) decays reconstructed in a data sample corresponding to an integrated luminosity of 2.0~fb$^{-1}$ of $pp$ interactions collected by the LHCb experiment at a centre-of-mass energy of 8~TeV in 2012 \begin{align*} x_+ & = (-8.7 \pm 3.1 \pm 1.6 \pm 0.6) \times 10^{-2}, \\ x_- & = \phantom{-} ( 5.3 \pm 3.2 \pm 0.9 \pm 0.9) \times 10^{-2}, \\ y_+ & = \phantom{-} ( 0.1 \pm 3.6 \pm 1.4 \pm 1.9) \times 10^{-2}, \\ y_- & = \phantom{-} ( 9.9 \pm 3.6 \pm 2.2 \pm 1.6) \times 10^{-2}, \end{align*} where the first uncertainty is statistical, the second arises from systematic effects from the method or detector considerations and the third from external strong-phase measurements used in the fit. These results are combined with those obtained in the equivalent analysis of LHCb data collected in 2011. [...]
LHCb-CONF-2013-004; CERN-LHCb-CONF-2013-004.-
Geneva : CERN, 2013 - 17 p.
Fulltext: LHCb-CONF-2013-004 - PDF; Figs-LHCb-CONF-2013-004 - ZIP;
In : 14th International Conference on B-Physics at Hadron Machines, Bologna, Italy, 8 - 12 Apr 2013
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2013-03-01
10:47 |
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2013-02-20
10:41 |
Measurement of $\sigma(b \bar{b})$ with inclusive final states
/LHCb Collaboration
A measurement of the cross section for the production of $b\bar{b}$ pairs based on $b$ inclusive final states is presented using LHCb data collected from $pp$ collisions at $\sqrt s$= 7 TeV in 2010, corresponding to an integrated luminosity of $\sim$18 pb$^{-1}$. The inclusive $b\bar{b}$ sample is selected on the basis of decay vertices displaced from the primary interaction. [...]
LHCb-CONF-2013-002; CERN-LHCb-CONF-2013-002.-
Geneva : CERN, 2013 - 15 p.
Fulltext: Figures - ZIP; LHCb-CONF-2013-002 - PDF;
In : 2013 Aspen Winter Conference on particle physics: Higgs Quo Vadis, Aspen, CO, USA, 10 - 16 Mar 2013
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2013-02-20
10:37 |
Measurement of the forward-central $b\bar{b}$ production asymmetry
/LHCb Collaboration
A measurement of the forward-central $b\bar{b}$ production asymmetry is reported based on data collected by {\mbox{LHCb}\xspace} in 2011 at $\sqrt{s} = 7$~TeV corresponding to an integrated luminosity of 1.0~fb$^{-1}$. Events are selected that have two identified $b$ jets, one of which is flavor tagged by the presence of a displaced muon with high momentum. [...]
LHCb-CONF-2013-001; CERN-LHCb-CONF-2013-001.-
Geneva : CERN, 2013 - 11 p.
Fulltext: LHCb-CONF-2013-001 - PDF; LHCb-CONF-2013-001-figs - TAR;
In : 2013 Aspen Winter Conference on particle physics: Higgs Quo Vadis, Aspen, CO, USA, 10 - 16 Mar 2013
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2012-10-26
14:10 |
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2012-10-10
10:54 |
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