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LHCb Papers

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2013-06-12
09:28
Measurement of the differential branching fraction of the decay $\Lambda_b^0\rightarrow\Lambda\mu^+\mu^-$ / LHCb collaboration
The differential branching fraction of the decay $\Lambda_b^0\rightarrow\Lambda\mu^+\mu^-$ is measured as a function of the square of the dimuon invariant mass, $q^2$. [...]
arXiv:1306.2577 ; LHCB-PAPER-2013-025 ; CERN-PH-EP-2013-094. - 2013. - 23 p.
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2013-06-07
04:12
Measurement of $C\!P$ violation in the phase space of $B^{\pm} \to K^{\pm} \pi^{+} \pi^{-}$ and $B^{\pm} \to K^{\pm} K^{+} K^{-}$ decays / LHCb collaboration
The charmless decays $B^{\pm}\to K^{\pm}\pi^+\pi^-$ and $B^{\pm}\to K^{\pm}K^+K^-$ are reconstructed using data, corresponding to an integrated luminosity of 1.0 fb$^{-1}$, collected by LHCb in 2011. [...]
arXiv:1306.1246 ; LHCB-PAPER-2013-027 ; CERN-PH-EP-2013-090. - 2013. - 9 p.
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2013-05-29
04:17
Observation of $B^0_s\rightarrow\chi_{c1}\phi$ decay and study of $B^0\rightarrow\chi_{c1,2}K^{*0}$ decays / LHCb collaboration
The first observation of the decay $B^0_s\rightarrow\chi_{c1}\phi$ and a study of $B^0\rightarrow\chi_{c1,2}K^{*0}$ decays are presented. [...]
arXiv:1305.6511 ; CERN-PH-EP-2013-088 ; LHCB-PAPER-2013-024. - 2013. - 18 p.
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2013-05-23
04:11
Search for the rare decay $D^0 \to \mu^+ \mu^-$ / LHCb collaboration
A search for the rare decay $D^0 \to \mu^+ \mu^-$is performed using a data sample, corresponding to an integrated luminosity of 0.9 fb$^{-1}$, of $pp$ collisions collected at a centre-of-mass energy of 7 TeV by the LHCb experiment. [...]
arXiv:1305.5059 ; CERN-PH-EP-2013-083 ; LHCB-PAPER-2013-013. - 2013. - 22 p.
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2013-05-17
11:55
Study of $B^{0} \rightarrow D^{*-}\pi^{+}\pi^{-}\pi^{+}$ and $B^{0} \rightarrow D^{*-}K^{+}\pi^{-}\pi^{+}$ decays / LHCb Collaboration
Using proton-proton collision data collected by the LHCb experiment at $\sqrt{s} =$ 7 TeV, corresponding to an integrated luminosity of 1.0 fb$^{-1}$, the ratio of branching fractions of the $B^{0}\rightarrow D^{*-}\pi^{+}\pi^{-}\pi^{+}$ decay relative to the $B^{0} \rightarrow D^{*-}\pi^{+}$ decay is measured to be \begin{equation*} \frac{\mathcal{B}(B^{0}\rightarrow D^{*-}\pi^{+}\pi^{-}\pi^{+})}{\mathcal{B}(B^{0} \rightarrow D^{*-}\pi^{+})} = 2.64 \pm 0.04\,(\text{stat.}) \pm 0.13\,(\text{syst.})\, . \label{eq:CF_BF_ratio_result} \end{equation*} The Cabibbo-suppressed decay $B^{0}\rightarrow D^{*-}K^{+}\pi^{-}\pi^{+}$ is observed for the first time and the measured ratio of branching fractions is \begin{equation*} \frac{\mathcal{B}(B^{0}\rightarrow D^{*-}K^{+}\pi^{-}\pi^{+})}{\mathcal{B}(B^{0} \rightarrow D^{*-}\pi^{+}\pi^{-}\pi^{+})} = (6.47 \pm 0.37\,(\text{stat.}) \pm 0.35\,(\text{syst.})) \times 10^{-2} \label{eq:CS_BF_ratio_result}\, . [...]
arXiv:1303.6861; LHCB-PAPER-2012-046; CERN-PH-EP-2013-041.- Geneva : CERN, 2013 - 17 p. - Published in : Phys. Rev. D 87 (2013) 092001 APS Open Access article: PDF; Related data file(s): ZIP; External link: Preprint

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2013-05-10
13:26
Measurement of the CKM angle \gamma\ from a combination of B->Dh analyses / LHCb collaboration
A combination of three LHCb measurements of the CKM angle \gamma\ is presented. [...]
arXiv:1305.2050 ; CERN-PH-EP-2013-079 ; LHCB-PAPER-2013-020. - 2013.
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2013-05-10
11:57
Differential branching fraction and angular analysis of the decay $B_s^0 \to \phi \mu^+\mu^-$ / LHCb Collaboration
The determination of the differential branching fraction and the first angular analysis of the decay $B_s^0\to\phi\mu^{+}\mu^{-}$ are presented using data, corresponding to an integrated luminosity of $1.0\,{\rm fb}^{-1}$, collected by the LHCb experiment at $\sqrt{s}=7\,{\rm TeV}$. [...]
arXiv:1305.2168 ; CERN-PH-EP-2013-078 ; LHCB-PAPER-2013-017. - 2013. - 19 p.
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2013-05-06
14:51
Production of $J/\psi$ and $\Upsilon$ mesons in $pp$ collisions at $\sqrt{s}$ = 8 TeV / LHCb Collaboration
The production of $J/\psi$ and $\Upsilon$ mesons in $pp$ collisions at $\sqrt{s}$ = 8 TeV is studied with the LHCb detector. [...]
arXiv:1304.6977 ; CERN-PH-EP-2013-071 ; LHCB-PAPER-2013-016. - 2013. - 35 p.
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2013-05-02
14:05
Measurement of the $B^0 \to K^{*0}e^+e^-$ branching fraction at low dilepton mass / LHCb Collaboration
The branching fraction of the rate decay $B^0 \rightarrow K^{*0}e^+e^-$ in the dilepton mass region from 30 to 1000 MeV$/c^2$ has been measured by the LHCb experiment, using $pp$ collision data, corresponding to an integrated luminosity of 1.0 fb$^{-1}$, at a centre-of-mass energy of 7 TeV. The decay mode $B^0 \rightarrow J/\psi(e^+e^-) K^{*0}$ is utilized as a normalization channel. [...]
arXiv:1304.3035; LHCB-PAPER-2013-005; CERN-PH-EP-2013-048.- Geneva : CERN, 2013 - 19 p. - Published in : J. High Energy Phys. 05 (2013) 159 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint

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2013-04-26
10:49
Precision measurement of $D$ meson mass differences / LHCb Collaboration
Using three- and four-body decays of $D$ mesons produced in semileptonic $b$-hadron decays, precision measurements of $D$ meson mass differences are made together with a measurement of the $D^{0}$ mass. [...]
arXiv:1304.6865 ; CERN-PH-EP-2013-053 ; LHCB-PAPER-2013-011. - 2013. - 18 p.
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