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CERN Document Server 2,051 elementer funnet  1 - 10nesteslutt  gå til element: Søket tok 6.92 sekunder. 
1.
(100)
First measurement of the $C\!P$-violating phase in ${{B} ^0_{s}} \!\rightarrow {{J /\psi }} (\rightarrow e ^+e ^-$)$\phi $ decays / LHCb Collaboration
A flavour-tagged time-dependent angular analysis of $B^0_s\to J/\psi\phi$ decays is presented where the $J/\psi$ meson is reconstructed through its decay to an $e^+e^-$ pair. The analysis uses a sample of $pp$ collision data recorded with the LHCb experiment at centre-of-mass energies of $7$ and $8$ TeV, corresponding to an integrated luminosity of $3$ fb$^{-1}$. [...]
arXiv:2105.14738; LHCb-PAPER-2020-042; CERN-EP-2021-064; LHCB-PAPER-2020-042.- Geneva : CERN, 2021-11-24 - 28 p. - Published in : Eur. Phys. J. C 81 (2021) 1026 Fulltext: document - PDF; LHCb-PAPER-2020-042 - PDF; 2105.14738 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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2.
(91)
Study of the doubly charmed tetraquark $T_{cc}^{+}$ / LHCb Collaboration
An exotic narrow state in the $D^0D^0\pi^+$ mass spectrum just below the $D^{*+}D^0$ mass threshold is studied using a data set corresponding to an integrated luminosity of 9fb$^{-1}$ acquired with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13TeV. The state is consistent with the ground isoscalar $T^+_{cc}$ tetraquark with a quark content of $cc\bar{u}\bar{d}$ and spin-parity quantum numbers $\mathrm{J}^{\mathrm{P}}=1^+$. [...]
arXiv:2109.01056; CERN-EP-2021-169; LHCb-PAPER-2021-032; LHCB-PAPER-2021-032.- Geneva : CERN, 2022-06-16 - 60 p. - Published in : Nature Commun. 13 (2022) 3351 Fulltext: document - PDF; 2109.01056 - PDF; LHCb-PAPER-2021-032 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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3.
(90)
Search for the doubly charmed baryon ${\it{\Omega}_{cc}^{+}}$ / LHCb Collaboration
A search for the doubly charmed baryon $\it{\Omega}_{cc}^{+}$ with the decay mode $\it{\Omega}_{cc}^{+}\to\it{\Xi}_c^{+}K^{-}\pi^{+}$ is performed using proton-proton collision data at a centre-of-mass energy of 13$\mathrm{\,Te\kern -0.1em V}$ collected by the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of $5.4\,\mathrm{fb}^{-1}$. No significant signal is observed within the invariant mass range of 3.6 to 4.0$\mathrm{\,Ge\kern -0.1em V}/c^2$. [...]
arXiv:2105.06841; LHCb-PAPER-2021-011; CERN-EP-2021-068; LHCB-PAPER-2021-011.- 2021-08-31 - 12 p. - Published in : Sci. China Phys. Mech. Astron. 64 (2021) 101062 Fulltext: document - PDF; 2105.06841 - PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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4.
(89)
Test of lepton universality in beauty-quark decays / LHCb Collaboration
The Standard Model of particle physics currently provides our best description of fundamental particles and their interactions. The theory predicts that the different charged leptons, the electron, muon and tau, have identical electroweak interaction strengths. [...]
arXiv:2103.11769; LHCb-PAPER-2021-004; CERN-EP-2021-042.- Geneva : CERN, 2022-03-15 - 25 p. - Published in : Nature Phys. Fulltext: LHCb-PAPER-2021-004 - PDF; Addendum - PDF; Publication - PDF; 2103.11769 - PDF; Related data file(s): ZIP; Supplementary information: ZIP; External links: CERN News article; LHCb News article; Interactions.org article; BBC News article; Scientific American article
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5.
(89)
Angular analysis of $ {B}^0\to {D}^{\ast -}{D}_s^{\ast +} $ with $ {D}_s^{\ast +}\to {D}_s^{+}\gamma $ decays / LHCb Collaboration
The first full angular analysis of the $B^0 \to D^{*-} D_s^{*+}$ decay is performed using 6 fb$^{-1}$ of $pp$ collision data collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. The $D_s^{*+} \to D_s^+ \gamma$ and $D^{*-} \to \bar{D}^0 \pi^-$ vector meson decays are used with the subsequent $D_s^+ \to K^+ K^- \pi^+$ and $\bar{D}^0 \to K^+ \pi^-$ decays. [...]
arXiv:2105.02596; LHCb-PAPER-2021-006; CERN-EP-2021-056; LHCB-PAPER-2021-006.- Geneva : CERN, 2021-06-29 - 31 p. - Published in : JHEP 2106 (2021) 177 Fulltext: LHCb-PAPER-2021-006 - PDF; document - PDF; 2105.02596 - PDF; Related data file(s): ZIP;
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6.
(88)
Searches for rare $ {B}_s^0 $ and B$^{0}$ decays into four muons / LHCb Collaboration
Searches for rare $B_s^0$ and $B^0$ decays into four muons are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 $\text{fb}^{-1}$. Direct decays and decays via light scalar and $J/\psi$ resonances are considered. [...]
arXiv:2111.11339; LHCb-PAPER-2021-039; CERN-EP-2021-236.- 2022-03-17 - 27 p. - Published in : JHEP 2203 (2022) 109 Fulltext: 2111.11339 - PDF; document - PDF; Fulltext from publisher: PDF; Related data file(s): ZIP;
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7.
(84)
Observation of new excited ${B} ^0_{s} $ states / LHCb Collaboration
A structure is observed in the $B^+K^-$ mass spectrum in a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb${}^-1$. The structure is interpreted as the result of overlapping excited $B_s^0$ states. [...]
arXiv:2010.15931; LHCb-PAPER-2020-026; CERN-EP-2020-185; LHCB-PAPER-2020-026.- Geneva : CERN, 2021-07-12 - 17 p. - Published in : Eur. Phys. J. C 81 (2021) 601 Fulltext: LHCb-PAPER-2020-026 - PDF; document - PDF; 2010.15931 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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8.
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Simultaneous determination of CKM angle $\gamma$ and charm mixing parameters / LHCb Collaboration
A combination of measurements sensitive to the $C\!P$ violation angle $\gamma$ of the Cabibbo--Kobayashi--Maskawa unitarity triangle and to the charm mixing parameters that describe oscillations between $D^0$ and $\overline{D}^0$ mesons is performed. Results from the charm and beauty sectors, based on data collected with the LHCb detector at CERN's Large Hadron Collider, are combined for the first time. [...]
arXiv:2110.02350; LHCb-PAPER-2021-033; CERN-EP-2021-183; LHCB-PAPER-2021-033.- Geneva : CERN, 2021-12-21 - 32 p. - Published in : JHEP 2112 (2021) 141 Fulltext: document - PDF; 2110.02350 - PDF; Related data file(s): ZIP;
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9.
(84)
Measurement of the $W$ boson mass / LHCb Collaboration
The $W$ boson mass is measured using proton-proton collision data at $\sqrt{s}=13$ TeV corresponding to an integrated luminosity of 1.7 fb$^{-1}$ recorded during 2016 by the LHCb experiment. With a simultaneous fit of the muon $q/p_T$ distribution of a sample of $W \to \mu\nu$ decays and the $\phi^*$ distribution of a sample of $Z\to\mu\mu$ decays the $W$ boson mass is determined to be \begin{equation*} m_{W} = 80354 \pm 23_{\rm stat} \pm 10_{\rm exp} \pm 17_{\rm theory} \pm 9_{\rm PDF}~\mathrm{MeV}, \end{equation*} where uncertainties correspond to contributions from statistical, experimental systematic, theoretical and parton distribution function sources. [...]
arXiv:2109.01113; LHCb-PAPER-2021-024; CERN-EP-2021-170; LHCB-PAPER-2021-024.- Geneva : CERN, 2022-01-10 - 36 p. - Published in : JHEP 2201 (2022) 036 Fulltext: 2109.01113 - PDF; document - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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10.
(84)
Angular analysis of the rare decay $B_s^0\to\phi\mu^+\mu^-$ / LHCb Collaboration
The abstract for the paper is An angular analysis of the rare decay $B^0_s\rightarrow\phi\mu^+\mu^-$ is presented, using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of $7$, $8$ and $13~\rm{TeV}$, corresponding to an integrated luminosity of 8.4~$\rm{fb}^{-1}$. The observables describing the angular distributions of the decay $B^0_s\rightarrow\phi\mu^+\mu^-$ are determined in regions of $q^2$, the square of the dimuon invariant mass. [...]
arXiv:2107.13428; LHCb-PAPER-2021-022; CERN-EP-2021-138; LHCB-PAPER-2021-022.- 2021-11-08 - 45 p. - Published in : JHEP 2111 (2021) 043 Fulltext: document - PDF; main (1) - PDF; 2107.13428 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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