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LHCb Papers

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2015-07-31
14:38
$B$ flavor tagging using charm decays at the LHCb experiment
An algorithm is described for tagging the flavour content at production of neutral $B$ mesons in the LHCb experiment. [...]
CERN-PH-EP-2015-193 ; LHCB-PAPER-2015-027.
- 2015.
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2015-07-15
14:31
Measurement of the branching fraction ratio $\mathcal{B}(B_c^+ \rightarrow \psi(2S)\pi^+)/\mathcal{B}(B_c^+ \rightarrow J/\psi \pi^+)$
Using $pp$ collision data collected by LHCb at center-of-mass energies $\sqrt{s}$ = 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$, the ratio of the branching fraction of the $B_c^+ \rightarrow \psi(2S)\pi^+$ decay relative to that of the $B_c^+ \rightarrow J/\psi\pi^+$ decay is measured to be 0.268 $\pm$ 0.032 (stat) $\pm$ 0.007 (syst) $\pm$ 0.006 (BF). [...]
CERN-PH-EP-2015-167 ; LHCB-PAPER-2015-024.
- 2015.
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2015-07-14
08:36
Observation of $J/\psi p$ resonances consistent with pentaquark states in ${\Lambda_b^0\to J/\psi K^-p}$ decays / LHCb collaboration
Observations of exotic structures in the $J/\psi p$ channel, that we refer to as pentaquark-charmonium states, in $\Lambda_b^0\to J/\psi K^- p$ decays are presented. [...]
arXiv:1507.03414 ; CERN-PH-EP-2015-153 ; LHCB-PAPER-2015-029.
- 2015. - 48 p.
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2015-07-02
08:10
Search for long-lived heavy charged particles using a ring imaging Cherenkov technique at LHCb / LHCb collaboration
A search is performed for heavy long-lived charged particles using 3.0 fb$^{-1}$ of pp collisions collected at $\sqrt{s}$= 7 and 8 TeV with the LHCb detector. [...]
arXiv:1506.09173 ; CERN-PH-EP-2105-139 ; LHCB-PAPER-2015-002.
- 2015. - 24 p.
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2015-06-30
08:05
Angular analysis and differential branching fraction of the decay $B^0_s\to\phi\mu^+\mu^-$ / LHCb collaboration
An angular analysis and a measurement of the differential branching fraction of the decay $B^0_s\to\phi\mu^+\mu^-$ are presented, using data corresponding to an integrated luminosity of $3.0\, {\rm fb}^{-1}$ of $pp$ collisions recorded by the LHCb experiment at $\sqrt{s} = 7$ and $8\, {\rm TeV}$. [...]
arXiv:1506.08777 ; CERN-PH-EP-2015-145 ; LHCB-PAPER-2015-023.
- 2015. - 37 p.
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2015-06-30
08:05
First observation of the decay $B_{s}^{0} \to K_{S}^{0} K^{*}(892)^{0}$ / LHCb collaboration
A search for $B_{(s)}^{0} \to K_{S}^{0} K^{*}(892)^{0}$ decays is performed using $pp$ collision data, corresponding to an integrated luminosity of $1.0~\text{fb}^{-1}$, collected with the LHCb detector at a centre-of-mass energy of $7~\text{TeV}$. [...]
arXiv:1506.08634 ; CERN-PH-EP-2015-144 ; LHCB-PAPER-2015-018.
- 2015. - 19 p.
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2015-06-29
17:30
Measurement of the ratio of branching fractions $\mathcal{B}(\overline{B}^0 \to D^{*+}\tau^{-}\overline{\nu}_{\tau}))/\mathcal{B}(\overline{B}^0 \to D^{*+}\mu^{-}\overline{\nu}_{\mu})$ / LHCb Collaboration
The branching fraction ratio $\mathcal{R}(D^{*}) \equiv \mathcal{B}(\overline{B}^0 \to D^{*+}\tau^{-}\overline{\nu}_{\tau})/\mathcal{B}(\overline{B}^0 \to D^{*+}\mu^{-}\overline{\nu}_{\mu})$ is measured using a sample of proton-proton collision data corresponding to 3.0 fb$^{-1}$ of integrated luminosity recorded by the LHCb experiment during 2011 and 2012. [...]
LHCB-PAPER-2015-025 ; arXiv:1506.08614 ; CERN-PH-EP-2015-150.
- 2015. - 19 p.
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2015-06-03
07:56
First observation of top quark production in the forward region / LHCb collaboration
Top quark production in the forward region in proton-proton collisions is observed for the first time. [...]
arXiv:1506.00903 ; LHCB-PAPER-2015-022 ; CERN-PH-EP-2015-132.
- 2015. - 17 p.
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2015-06-01
07:58
Measurement of the exclusive $\Upsilon$ production cross-section in $pp$ collisions at $\sqrt{s}=$7 TeV and 8 TeV / LHCb collaboration
A study is presented of central exclusive production of $\Upsilon(nS)$ states, where the $\Upsilon(nS)$ resonances decay to the $\mu^+\mu^-$ final state, using $pp$ collision data recorded by the LHCb experiment. [...]
arXiv:1505.08139 ; LHCB-PAPER-2015-011 ; CERN-PH-EP-2015-123.
- 2015. - 21 p.
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2015-05-28
08:14
Study of $B^{-}\to DK^-\pi^+\pi^-$ and $B^-\to D\pi^-\pi^+\pi^-$ decays and determination of the CKM angle $\gamma$ / LHCb collaboration
We report a study of the suppressed $B^{-}\to DK^-\pi^+\pi^-$ and favored $B^-\to D\pi^-\pi^+\pi^-$ decays, where the neutral $D$ meson is detected through its decays to the $K^{\mp}\pi^{\pm}$ and $CP$-even $K^+K^-$ and $\pi^+\pi^-$ final states. [...]
arXiv:1505.07044 ; LHCB-PAPER-2015-020 ; CERN-PH-EP-2015-127.
- 2015. - 22 p.
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