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CERN Document Server 22 record trovati  1 - 10successivofine  salta al record: La ricerca ha impiegato 0.66 secondi. 
1.
Observation of the $B^+ \rightarrow J/\psi \eta^{\prime} K^+$ decay / LHCb Collaboration
The $B^+ \rightarrow J/\psi \eta^{\prime} K^+$ decay is observed for the first time using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8, and 13TeV, corresponding to a total integrated luminosity of 9fb$^{-1}$. The branching fraction of this decay is measured relative to the known branching fraction of the $B^+ \rightarrow \psi(2S) K^+$ decays and found to be $$ \frac{\mathcal{B}( B^+ \rightarrow J/\psi \eta^{\prime}K^+)} {\mathcal{B}( B^+ \rightarrow \psi(2S)K^+) } = \left(4.91\pm 0.47\pm0.29\pm0.07\right)\times10^{-2}, $$ where the first uncertainty is statistical, the second is systematic and the third is related to external branching fractions. [...]
arXiv:2303.09443; LHCb-PAPER-2022-054; CERN-EP-2023-022.- Geneva : CERN, 2023-08-25 - 19 p. Fulltext: Publication - PDF; 2303.09443 - PDF; Erratum - PDF; Related data file(s): ZIP;
2.
Search for $\it{CP}$ violation in $D_{(s)}^{+}\rightarrow K^{-}K^{+}K^{+}$ decays / LHCb Collaboration
A search for direct $\it{CP}$ violation in the Cabibbo-suppressed decay $D_{s}^{+}\rightarrow K^{-}K^{+}K^{+}$ and in the doubly Cabibbo-suppressed decay $D^{+}\rightarrow K^{-}K^{+}K^{+}$ is reported. The analysis is performed with data collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 $\textrm{fb}^{-1}$. [...]
arXiv:2303.04062; LHCb-PAPER-2022-042; CERN-EP-2023-010; LHCB-PAPER-2022-042.- Geneva : CERN, 2023-07-07 - 18 p. - Published in : JHEP 2307 (2023) 067 Fulltext: PAPER_CPV_Ds_D_KKK-2 - PDF; document - PDF; 2303.04062 - PDF; Related data file(s): ZIP;
3.
Observation of the $B^0_s\rightarrow \chi_{c1}(3872)\pi^+\pi^-$ decay / LHCb Collaboration
The first observation of the $B^0_s \rightarrow \left( \chi_{c1}(3872) \rightarrow J/\psi\pi^+\pi^-\right) \pi^+ \pi^-$ decay is reported using proton-proton collision data, corresponding to integrated luminosities of 1, 2 and 6fb$^{-1}$, collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13TeV, respectively. The ratio of branching fractions relative to the $B^0_s \rightarrow \left( \psi(2S) \rightarrow J\psi\pi^+\pi^- \right) \pi^+ \pi^-$ decay is measured to be $$ \frac{ \mathcal{B} \left( B^0_s \rightarrow \chi_{c1}(3872) \pi^+\pi^-\right) \times \mathcal{B} \left( \chi_{c1}(3872) \rightarrow J\psi\pi^+\pi^-\right)} { \mathcal{B} \left( B^0_s \rightarrow \psi(2S) \pi^+ \pi^- \right) \times \mathcal{B} \left( \psi(2S) \rightarrow J\psi\pi^+\pi^-\right) } = \left( 6.8 \pm 1.1 \pm 0.2 \right) \times 10^{-2} , $$ where the first uncertainty is statistical and the second systematic. [...]
arXiv:2302.10629; CERN-EP-2023-015; LHCb-PAPER-2022-049; LHcb-PAPER-2022-049.- Geneva : CERN, 2023-07-11 - 18 p. - Published in : JHEP 2307 (2023) 084 Fulltext: LHCb-PAPER-2022-049 - PDF; 2302.10629 - PDF; document - PDF; Related data file(s): ZIP;
4.
Charmonium production in $p$Ne collisions at $\sqrt{s_{\rm NN}}=68.5$ GeV / LHCb Collaboration
The measurement of charmonium states produced in proton-neon ($p$Ne) collisions by the LHCb experiment in its fixed-target configuration is presented. The production of $J/\psi$ and $\psi(2S)$ mesons is studied with a beam of 2.5 TeV protons colliding on gaseous neon targets at rest, corresponding to a nucleon-nucleon centre-of-mass energy $\sqrt{s_{\rm NN}}=68.5$ GeV. [...]
arXiv:2211.11645; CERN-EP-2022-216; LHCb-PAPER-2022-014.- Geneva : CERN, 2023-07-17 - 11 p. - Published in : Eur. Phys. J. C 83 (2023) 625 Fulltext: Publication - PDF; 2211.11645 - PDF; Related data file(s): ZIP;
5.
${{J}/\psi }$ and ${{D}} ^0$ production in $\sqrt{s_{\scriptscriptstyle \text {NN}}} =68.5\,\text {GeV} $ PbNe collisions / LHCb Collaboration
The first measurement of $J/\psi$ and $D^0$ production in PbNe collisions by the LHCb experiment in its fixed-target configuration is reported. The production of $J/\psi$ and $D^0$ mesons is studied with a beam of lead ions with an energy of 2.5 TeV per nucleon colliding on gaseous neon targets at rest, corresponding to a nucleon-nucleon centre-of-mass energy of $\sqrt{s_{\rm NN}}$ = 68.5 GeV. [...]
arXiv:2211.11652; CERN-EP-2022-215; LHCb-PAPER-2022-011.- Geneva : CERN, 2023-07-25 - 9 p. - Published in : Eur. Phys. J. C 83 (2023) 658 Fulltext: 2211.11652 - PDF; document - PDF; Related data file(s): ZIP;
6.
Measurement of the ratio of branching fractions $\mathcal{B}(B_c^+ \to B_s^0 \pi^+)/\mathcal{B}(B_c^+ \to J/\psi \pi^+)$Measurement of the ratio of branching fractions $ \mathcal{B}\left({B}_c^{+}\to {B}_s^0{\pi}^{+}\right)/\mathcal{B}\left({B}_c^{+}\to J/\psi {\pi}^{+}\right) $ / LHCb Collaboration
The ratio of branching fractions of $B_c^+ \to B_s^0 \pi^+$ and $B_c^+ \to J/\psi \pi^+$ decays is measured with proton-proton collision data of a centre-of-mass energy of $13\ \text{TeV}$. The data were collected with the LHCb experiment during 2016--2018, corresponding to an integrated luminosity of $5.4 \ \text{fb}^{-1}$. [...]
arXiv:2210.12000; LHCb-PAPER-2022-034; CERN-EP-2022-204; LHCB-PAPER-2022-034.- Geneva : CERN, 2023-07-07 - 12 p. - Published in : JHEP 2307 (2023) 066 Fulltext: document - PDF; 2210.12000 - PDF; Related data file(s): ZIP;
7.
Measurement of the $\Lambda_c^+$ to $D^0$ production cross-section ratio in peripheral PbPb collisions / LHCb Collaboration
We report on a measurement of the $\Lambda^+_c$ to $D^0$ production ratio in PbPb collisions at $\sqrt{s_{\rm NN }}$ = 5.02 TeV with the LHCb detector in the forward rapidity region 2$<$ y $<$ 4.5. The $\Lambda^+_c$ ($D^0$) hadrons are reconstructed via the decay channel $ \Lambda^+_c \rightarrow p k^+ \pi^-$ ($D^0 \rightarrow k^-\pi^+$) for 2$ <
arXiv:2210.06939; LHCb-PAPER-2021-046; CERN-EP-2022-148; LHCB-PAPER-2021-046.- Geneva : CERN, 2023-06-22 - 17 p. Fulltext: 2210.06939 - PDF; document - PDF; LHCB-PAPER-2021-046 - PDF; erratum - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
8.
Amplitude analysis of the $D_s^+ \to \pi^- \pi^+ \pi^+$ decay / LHCb Collaboration
A Dalitz plot analysis of the $D_s^+ \to \pi^- \pi^+ \pi^+$ decay is presented. The analysis is based on proton-proton collision data recorded by the LHCb experiment at a centre-of-mass energy 8 TeV and corresponding to an integrated luminosity of 1.5fb$^{-1}$ [...]
arXiv:2209.09840; LHCb-PAPER-2022-030; CERN-EP-2022-173.- Geneva : CERN, 2023-07-26 - 35 p. - Published in : JHEP 2307 (2023) 204 Fulltext: LHCb-PAPER-2022-030 - PDF; Publication - PDF; 2209.09840 - PDF; Related data file(s): ZIP;
9.
Search for the lepton-flavour violating decays $B^0 \to K^{*0} \tau^\pm \mu^\mp$ / LHCb Collaboration
A first search for the lepton-flavour violating decays $B^0 \to K^{*0} \tau^\pm \mu^\mp$ is presented. The analysis is performed using a sample of proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. [...]
arXiv:2209.09846; LHCb-PAPER-2022-021; CERN-EP-2022-154; LHCB-PAPER-2022-021.- Geneva : CERN, 2023-06-23 - 17 p. - Published in : JHEP 2306 (2023) 143 Fulltext: 2209.09846 - PDF; document - PDF; Related data file(s): ZIP;
10.
Amplitude analysis of the $D^+ \to \pi^-\pi^+\pi^+$ decay and measurement of the $\pi^-\pi^+$ S-wave amplitude / LHCb Collaboration
An amplitude analysis of the $D^+ \to \pi^- \pi^+ \pi^+$ decay is performed with a sample corresponding to 1.5 $\rm fb^{-1}$ of integrated luminosity of $pp$ collisions at a centre-of-mass energy $\sqrt{s}=8$\tev collected by the LHCb detector in 2012. The sample contains approximately six hundred thousand candidates with a signal purity of $95\%$. [...]
arXiv:2208.03300; LHCb-PAPER-2022-016; CERN-EP-2022-136; LHCB-PAPER-2022-016.- Geneva : CERN, 2023-06-09 - 21 p. - Published in : JHEP 2306 (2023) 044 Fulltext: 2208.03300 - PDF; LHCb-PAPER-2022-016 - PDF; Publication - PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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Vedi anche: autori con nomi simili
8 D’Ambrosio, C
3 D’Ambrosio, Carmelo
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