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CERN Document Server 找到 66 筆記錄  1 - 10下一個最後  跳到記錄: 檢索需時 0.64 秒. 
1.
Measurement of the charge asymmetry of electrons from the decays of $W$ bosons produced in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV / CDF Collaboration
At the Fermilab Tevatron proton-antiproton ($p\bar{p}$) collider, high-mass electron-neutrino ($e\nu$) pairs are produced predominantly in the process $p \bar{p} \rightarrow W(\rightarrow e\nu) + X$. The asymmetry of the electron and positron yield as a function of their pseudorapidity constrain the slope of the ratio of the $u$- to $d$-quark parton distributions versus the fraction of the proton momentum carried by the quarks. [...]
arXiv:2107.04678; FERMILAB-PUB-21-293-E.- 2021-11-01 - 27 p. - Published in : Phys. Rev. D 104 (2021) 092002 Fulltext: Fulltext - PDF; fermilab-pub-21-293-e - PDF; 2107.04678 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
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2.
Model-independent confirmation of the $Z(4430)^-$ state / LHCb collaboration
The decay $B^0\to \psi(2S) K^+\pi^-$ is analyzed using $\rm 3~fb^{-1}$ of $pp$ collision data collected with the LHCb detector. A model-independent description of the $\psi(2S) \pi$ mass spectrum is obtained, using as input the $K\pi$ mass spectrum and angular distribution derived directly from data, without requiring a theoretical description of resonance shapes or their interference. [...]
arXiv:1510.01951; CERN-PH-EP-2015-244; LHCB-PAPER-2015-038; CERN-PH-EP-2015-244; LHCB-PAPER-2015-038.- 2015-12-29 - 15 p. - Published in : Phys. Rev. D 92 (2015) 112009 APS Open Access article: PDF; Fulltext: 10.1103_PhysRevD.92.112009 - PDF; arXiv:1510.01951 - PDF; External link: Figures, tables and other information
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3.
A Study of the Energy Dependence of the Underlying Event in Proton-Antiproton Collisions / for the CDF Collaboration
We study charged particle production in proton-antiproton collisions at 300 GeV, 900 GeV, and 1.96 TeV. We use the direction of the charged particle with the largest transverse momentum in each event to define three regions of eta-phi space; toward, away, and transverse. [...]
arXiv:1508.05340; FERMILAB-PUB-15-361-E; FERMILAB-PUB-15-361-E.- 2015-11-23 - 21 p. - Published in : Phys. Rev. D 92 (2015) 092009 Fulltext: PDF; External links: Fermilab Accepted Manuscript; Fermilab Today Result of the Week; Rivet analyses reference
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4.
Search for the lepton flavour violating decay $\tau^-\to \mu^-\mu^+\mu^-$ / LHCb Collaboration
A search for the lepton flavour violating decay $\tau^-\rightarrow\mu^-\mu^+\mu^-$ is performed with the LHCb experiment. The data sample corresponds to an integrated luminosity of 1.0 fb$^{−1}$ of proton-proton collisions at a centre-of-mass energy of 7 TeV and 2.0 fb$^{−1}$ at 8 TeV. [...]
arXiv:1409.8548; LHCB-PAPER-2014-052; CERN-PH-EP-2014-236; LHCB-PAPER-2014-052; CERN-PH-EP-2014-236.- Geneva : CERN, 2015-02-18 - 19 p. - Published in : JHEP 02 (2015) 121 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF;
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5.
Measurement of the CP-violating phase $\phi_s$ in $\bar{B}^{0}_{s}\to D_{s}^{+}D_{s}^{-}$ decays / LHCb collaboration
We present a measurement of the $CP$-violating weak mixing phase $\phi_s$ using the decay $\bar{B}^{0}_{s}\to D_{s}^{+}D_{s}^{-}$ in a data sample corresponding to $3.0$ fb$^{-1}$ of integrated luminosity collected with the LHCb detector in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV. An analysis of the time evolution of the system, which does not constrain $|\lambda|=1$ to allow for the presence of $CP$ violation in decay, yields $\phi_s = 0.02 \pm 0.17$ (stat) $\pm 0.02$ (syst) rad, $|\lambda| = 0.91^{+0.18}_{-0.15}$ (stat) $\pm0.02$ (syst). [...]
arXiv:1409.4619; LHCB-PAPER-2014-051; CERN-PH-EP-2014-223; LHCB-PAPER-2014-051; CERN-PH-EP-2014-223.- Geneva : CERN, 2014-11-20 - 9 p. - Published in : Phys. Rev. Lett. 113 (2014) 211801 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint
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6.
Measurement of the $\eta_c (1S)$ production cross-section in proton-proton collisions via the decay $\eta_c (1S) \rightarrow p \bar{p}$ / LHCb collaboration
The production of the $\eta_c (1S)$ state in proton-proton collisions is probed via its decay to the $p \bar{p}$ final state with the LHCb detector, in the rapidity range $2.0 < y < 4.5$ and in the meson transverse-momentum range $p_T > 6.5$ GeV/c. The cross-section for prompt production of $\eta_c (1S)$ mesons relative to the prompt $J/\psi$ cross-section is measured, for the first time, to be $\sigma_{\eta_c (1S)}/\sigma_{J/\psi} = 1.74 \pm 0.29 \pm 0.28 \pm 0.18 _{B}$ at a centre-of-mass energy $\sqrt{s} = 7$ TeV using data corresponding to an integrated luminosity of 0.7 fb$^{-1}$, and $\sigma_{\eta_c (1S)}/\sigma_{J/\psi} = 1.60 \pm 0.29 \pm 0.25 \pm 0.17 _{B}$ at $\sqrt{s} = 8$ TeV using 2.0 fb$^{-1}$. [...]
arXiv:1409.3612; LHCB-PAPER-2014-029; CERN-PH-EP-2014-218; LHCB-PAPER-2014-029; CERN-PH-EP-2014-218.- Geneva : CERN, 2015-07-04 - 20 p. - Published in : Eur. Phys. J. C 75 (2015) 311 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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7.
Measurement of the $\chi_b(3P)$ mass and of the relative rate of $\chi_{b1}(1P)$ and $\chi_{b2}(1P)$ production / LHCb collaboration
The production of $\chi_b$ mesons in proton-proton collisions is studied using a data sample collected by the LHCb detector, at centre-of-mass energies of $\sqrt{s}=7$ and $8$ TeV and corresponding to an integrated luminosity of 3.0 fb$^{-1}$. The $\chi_b$ mesons are identified through their decays to $\Upsilon(1S)\gamma$ and $\Upsilon(2S)\gamma$ using photons that converted to $e^+e^-$ pairs in the detector [...]
arXiv:1409.1408; LHCB-PAPER-2014-040; CERN-PH-EP-2014-206; LHCB-PAPER-2014-040-CERN_PH_EP_2014_206; LHCB-PAPER-2014-040; CERN-PH-EP-2014-206.- Geneva : CERN, 2014-10-14 - 22 p. - Published in : JHEP 10 (2014) 088 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF;
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8.
Measurements of $C\!P$ violation in the three-body phase space of charmless $B^{\pm}$ decays / LHCb Collaboration
Additional abstract: The additional document presents figures of the projections into the two-body invariant masses of the spectra of $B^{\pm} \to K^{\pm}\pi^+\pi^-, B^{\pm} \to K^{\pm}K^+K^-, B^{\pm} \to \pi^{\pm} K^+ K^-$ and $B^{\pm} \to \pi^{\pm} \pi^+ \pi^-$ decays. The figures show additional information related to the CP asymmetry in phase space, for section VII of the article Physical Review D 90, 112004 (2014)..
arXiv:1408.5373; CERN-PH-EP-2014-203; LHCB-PAPER-2014-044; LHCB-PAPER-2014-044; arXiv:1408.5373.- Geneva : CERN, 2014-12-11 - 17 p. - Published in : Phys. Rev. D 90 (2014) 112004 APS Open Access article: PDF; Additional document: PDF; Additional info: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): LHCb-PAPER-2014-044_supplementary - ZIP; LHCb-PAPER-2014-044_AddInfo_figs_v3 - ZIP; External link: Preprint
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9.
Determination of $\gamma$ and $-2\beta_s$ from charmless two-body decays of beauty mesons / LHCb collaboration
Using the latest LHCb measurements of time-dependent $C\!P$ violation in the $B^0_s \to K^+K^-$ decay, a U-spin relation between the decay amplitudes of $B^0_s \to K^+K^-$ and $B^0\to \pi^+\pi^-$ decay processes allows constraints to be placed on the angle $\gamma$ of the unitarity triangle and on the $B^0_s$ mixing phase $-2\beta_s$. Results from an extended approach, which uses additional inputs on $B^0\to \pi^0\pi^0$ and $B^+\to \pi^+\pi^0$ decays from other experiments and exploits isospin symmetry, are also presented. [...]
arXiv:1408.4368; CERN-PH-EP-2014-207; LHCB-PAPER-2014-045; CERN-PH-EP-2014-207; LHCB-PAPER-2014-045.- Geneva : CERN, 2015-02-04 - 11 p. - Published in : Phys. Lett. B 741 (2015) 1 Article from SCOAP3: PDF; Elsevier Open Access article : PDF; Fulltext: arXiv:1408.4368 - PDF; S0370269314008867 - XML; Related data file(s): ZIP;
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10.
Measurement of the forward $W$ boson cross-section in $pp$ collisions at $\sqrt{s} $ = 7 TeV / LHCb collaboration
A measurement of the inclusive $W \to \mu\nu$ production cross-section using data from $pp$ collisions at a centre-of-mass energy of $\sqrt{s} = 7 {\rm \, TeV}$ is presented. The analysis is based on an integrated luminosity of about $1.0 {\rm \, fb}^{-1}$ recorded with the LHCb detector. [...]
arXiv:1408.4354; LHCB-PAPER-2014-033; CERN-PH-EP-2014-175; LHCB-PAPER-2014-033; CERN-PH-EP-2014-175.- Geneva : CERN, 2014-12-10 - 29 p. - Published in : JHEP 12 (2014) 079 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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