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LHCb Papers

Ultimi arrivi:
2024-02-26
13:36
Observation of the $B_c^+ \to J/\psi \pi^+ \pi^0$ decay / LHCb Collaboration
The first observation of the $B_c^+ \to J/\psi \pi^+ \pi^0$ decay is reported with high significance using proton-proton collision data, corresponding to an integrated luminosity of 9 fb$^{-1}$, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV. [...]
arXiv:2402.05523 ; LHCb-PAPER-2023-046 ; CERN-EP-2024-019 ; LHCB-PAPER-2023-046.
- 2024. - 30 p.
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2024-02-23
10:18
Measurement of $Z$ boson production cross-section in $pp$ collisions at $\sqrt{s} = 5.02$ TeV / LHCb Collaboration
The first measurement of the $Z$ boson production cross-section at centre-of-mass energy $\sqrt{s} = 5.02\,$TeV in the forward region is reported, using $pp$ collision data collected by the LHCb experiment in year 2017, corresponding to an integrated luminosity of $100 \pm 2\,\rm{pb^{-1}}$. The production cross-section is measured for final-state muons in the pseudorapidity range $2.0<\eta<4.5$ with transverse momentum $p_{\rm{T}}> 20\,\rm{GeV/}\it{c}$. [...]
arXiv:2308.12940; LHCb-PAPER-2023-010; CERN-EP-2023-141; LHCB-PAPER-2023-010.- Geneva : CERN, 2024 - 34 p. - Published in : JHEP 2402 (2024) 070 Fulltext: PDF; Related data file(s): ZIP;

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2024-02-12
11:08
Measurement of the Branching Fraction of $B^{0} \rightarrow J/\psi \pi^{0}$ Decays / LHCb Collaboration
The ratio of branching fractions between $B^{0} \rightarrow J/\psi \pi^{0}$ and $B^{+} \rightarrow J/\psi K^{*+}$ decays is measured with proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb$^{-1}$. [...]
arXiv:2402.05528 ; LHCb-PAPER-2023-041 ; CERN-EP-2024-009.
- 2024. - 28 p.
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2024-02-02
14:10
Measurements of the branching fraction ratio $\mathcal{B}(\phi\to\mu^{+}\mu^{-})$/$\mathcal{B}(\phi\to e^{+}e^{-})$ with charm meson decays / LHCb Collaboration
Measurements of the branching fraction ratio ${\mathcal{B}(\phi \to \mu^+ \mu^-)/\mathcal{B}(\phi\to e^+e^-)}$ with ${D_{s}^{+} \to \pi^{+} \phi}$ and ${D^{+} \to \pi^{+} \phi}$ decays, denoted $R^{s}_{\phi \pi}$ and $R^{d}_{\phi \pi}$, are presented. [...]
arXiv:2402.01336 ; LHCb-PAPER-2023-038 ; CERN-EP-2024-001 ; LHCB-PAPER-2023-038.
- 2024. - 25 p.
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2024-02-02
10:39
Measurement of the CKM angle $\gamma$ using the $B^{\pm}\rightarrow D^*h^{\pm}$ channels / LHCb Collaboration
A measurement of the $CP$-violating observables from $B^{\pm}\rightarrow D^* K^{\pm}$ and $\mbox{$B^{\pm}\rightarrow D^* \pi^{\pm}$}$ decays is presented, where $D^* (D) $ is an admixture of $D^{*0}$ and $\bar{D}^{*0}$ ($D^0$ and $\bar{D}^0$) states and is reconstructed through the decay chains $ D^* \rightarrow D\pi^0/\gamma$ and $\mbox{$D \to K_S^0 \pi^+\pi^-/K_S^0 K^+K^-$}$. The measurement is performed by analysing the signal yield variation across the $D$ decay phase space and is independent of any amplitude model. [...]
arXiv:2310.04277; LHCb-PAPER-2023-012; CERN-EP-2023-170.- Geneva : CERN, 2023-12-01 - 32 p. - Published in : JHEP 2312 (2023) 13 Fulltext: 2310.04277 - PDF; document - PDF; Publication - PDF; latex_B2Dsth_JHEP - PDF; Related data file(s): ZIP;

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2024-02-01
08:59
Study of $CP$ violation in $B^0_{(s)} to D K^{*}(892)^0$ decays with $D \to K \pi ( \pi \pi)$, $ \pi \pi( \pi \pi)$, and $KK$ final states / LHCb Collaboration
A measurement of $CP$-violating observables associated with the interference of $B^0\to D^0 K^{*}(892)^0$ and $B^0\to \overline{D}^0 K^*(892)^0$ decay amplitudes is performed in the $D^0 \to K^{\mp}\pi^{\pm}(\pi^+\pi^-),$ $D^0 \to \pi^+\pi^-(\pi^+\pi^-)$, and $D^0\to K^+K^-$ final states using data collected by the LHCb experiment corresponding to an integrated luminosity of $9$~$\text{fb}^{-1}$. [...]
arXiv:2401.17934 ; LHCb-PAPER-2023-040 ; CERN-EP-2024-007 ; LHCB-PAPER-2023-040.
- 2024. - 31 p.
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2024-01-23
10:28
Prompt and nonprompt $\psi(2S)$ production in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV / LHCb Collaboration
The production of $\psi(2S)$ mesons in proton-lead collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_{NN}}=8.16$ TeV is studied with the LHCb detector using data corresponding to an integrated luminosity of 34 nb$^{-1}$. [...]
arXiv:2401.11342 ; LHCb-PAPER-2023-024 ; CERN-EP-2023-293.
- 2024. - 55 p.
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2023-12-20
09:37
Search for $B_c^+\to\pi^+\mu^+\mu^-$ decays and measurement of the branching fraction ratio ${\cal B}(B_c^+\to\psi(2S)\pi^+)/{\cal B}(B_c^+\to J/\psi \pi^+)$ / LHCb Collaboration
The first search for nonresonant $B_c^+\to\pi^+\mu^+\mu^-$ decays is reported. [...]
arXiv:2312.12228 ; LHCb-PAPER-2023-037 ; CERN-EP-2023-280 ; LHCB-PAPER-2023-037.
- 2023. - 27 p.
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2023-12-15
10:04
Amplitude analysis of the $B^0 \to K^{*0}\mu^+\mu^-$ decay / LHCb Collaboration
An amplitude analysis of the $B^{0}\to K^{*0}\mu^+\mu^-$ decay is presented using a dataset corresponding to an integrated luminosity of $4.7$ fb$^{-1}$ of $pp$ collision data collected with the LHCb experiment. [...]
arXiv:2312.09115 ; LHCb-PAPER-2023-033 ; CERN-EP-2023-273.
- 2023. - 23 p.
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2023-12-15
09:55
Determination of short- and long-distance contributions in $B^0 \to K^{*0}\mu^+\mu^-$ decays / LHCb Collaboration
An amplitude analysis of the $B^0 \to K^{*0} \mu^+ \mu^-$ decay is presented. [...]
arXiv:2312.09102 ; LHCb-PAPER-2023-032 ; CERN-EP-2023-237.
- 2023. - 44 p.
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