2024-04-05 15:16 |
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2024-02-23 10:18 |
Measurement of the $Z$ 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, 2024-02-13 - 38 p.
- Published in : JHEP 2402 (2024) 070
Fulltext: 2308.12940 - PDF; LHCb-PAPER-2023-010 - PDF; Publication - PDF; Related data file(s): ZIP;
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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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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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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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$^{-1}$. The prompt and nonprompt $\psi(2S)$ production cross-sections and the ratio of the $\psi(2S)$ to $J/\psi$ cross-section are measured as a function of the meson transverse momentum and rapidity in the nucleon-nucleon centre-of-mass frame, together with forward-to-backward ratios and nuclear modification factors. [...]
arXiv:2401.11342; LHCb-PAPER-2023-024; CERN-EP-2023-293.-
Geneva : CERN, 2024-04-19 - 55 p.
- Published in : JHEP 2404 (2024) 111
Fulltext: 2401.11342 - PDF; document - PDF; LHCb-PAPER-2023-024 - PDF; Related data file(s): ZIP;
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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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. For the first time, the coefficients associated to short-distance physics effects, sensitive to processes beyond the Standard Model, are extracted directly from the data through a $q^2$-unbinned amplitude analysis, where $q^2$ is the $\mu^+\mu^-$ invariant mass squared. [...]
arXiv:2312.09115; LHCb-PAPER-2023-033; CERN-EP-2023-273.-
Geneva : CERN, 2024-03-28 - 13 p.
- Published in : Phys. Rev. Lett. 132 (2024) 131801
Fulltext: 2312.09115 - PDF; Publication - PDF; LHCb-PAPER-2023-033 - PDF; Related data file(s): ZIP;
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2023-12-15 09:55 |
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2023-11-29 14:11 |
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2023-11-17 16:37 |
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2023-11-03 15:43 |
Fraction of $\chi_c$ decays in prompt $J/\psi$ production measured in $pPb$ collisions at $\sqrt{s_{NN}}=8.16 \text{TeV}$
/ LHCb Collaboration
The fraction of $\chi_{c1}$ and $\chi_{c2}$ decays in the prompt $J/\psi$ yield, $F_{\chi c}=\sigma_{\chi c\to J/\psi}/\sigma_{J/\psi}$, is measured by the LHCb detector in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV. The study covers the forward ($1.5< y^*<4.0$) and backward ($-5.0 < y^*<-2.5$) rapidity regions, where $y^*$ is the $J/\psi$ rapidity in the nucleon-nucleon center-of-mass system. [...]
arXiv:2311.01562; LHCb-PAPER-2023-028; CERN-EP-2023-224.-
Geneva : CERN, 2024-03-08 - 20 p.
- Published in : Phys. Rev. Lett. 132 (2024) 102302
Fulltext: 2311.01562 - PDF; Fraction_of_chi_c_decays_in_prompt_Jpsi_yields_in_pPb_and_Pbp_collisions_at_8_16_TeV - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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2023-10-31 15:28 |
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
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