Measurement Of The Forward Backward Asymmetry In The Production Of B Mesons In Pp U00af Collisions At U221a S
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Measurement Of The Forward Backward Asymmetry In The Production Of B Mesons In Pp U00af Collisions At U221a S
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Author :
language : en
Publisher:
Release Date : 2015
Measurement Of The Forward Backward Asymmetry In The Production Of B Mesons In Pp U00af Collisions At U221a S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
We present a measurement of the forward-backward asymmetry in the production of B± mesons, AFB(B±), using B± → J/?K± decays in 10.4 fb-1 of pp¯ collisions at √s = 1.96 TeV collected by the D0 experiment during Run II of the Tevatron collider. A nonzero asymmetry would indicate a preference for a particular flavor, id est, b quark or b¯ antiquark, to be produced in the direction of the proton beam. We extract AFB(B±) from a maximum likelihood fit to the difference between the numbers of forward- and backward-produced B± mesons. We measure an asymmetry consistent with zero: AFB(B±) = [-0.24 ± 0.41 (stat) ± 0.19 (syst)]%.
Measurement Of The Forward Backward Asymmetry Of Electron And Muon Pair Production In Pp Collisions At U221a S
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language : en
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Release Date : 2015
Measurement Of The Forward Backward Asymmetry Of Electron And Muon Pair Production In Pp Collisions At U221a S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
This study presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp → Z/? * →l+l-, with l being electrons or muons, and the extraction of the effective weak mixing angle. The results are based on the full set of data collected in 2011 in pp collisions at the LHC at ( sqrt{s}=7 ) TeV, corresponding to an integrated luminosity of 4.8 fb-1. The measured asymmetry values are found to be in agreement with the corresponding Standard Model predictions. The combination of the muon and electron channels yields a value of the effective weak mixing angle of sin2 ?efflept =0.2308±0.0005(stat.)±0.0006(syst.)±0.0009(PDF), where the first uncertainty corresponds to data statistics, the second to systematic effects and the third to knowledge of the parton density functions. This result agrees with the current world average from the Particle Data Group fit.
Measurement Of The Forward Backward Asymmetry Of Electron And Muon Pair Production In Pp Collisions At Sqrt S
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Author :
language : en
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Release Date : 2015
Measurement Of The Forward Backward Asymmetry Of Electron And Muon Pair Production In Pp Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
This paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp 2!Z/[gamma] * 2!l + l -, with l being electrons or muons, and the extraction of the effective weak mixing angle. The results are based on the full set of data collected in 2011 in pp collisions at the LHC at \(\sqrt{s}=7 \) TeV, corresponding to an integrated luminosity of 4.8 fb-1. The measured asymmetry values are found to be in agreement with the corresponding Standard Model predictions. The combination of the muon and electron channels yields a value of the effective weak mixing angle of sin2 [theta] eff lept =0.2308"0.0005(stat.)"0.0006(syst.)"0.0009(PDF), where the first uncertainty corresponds to data statistics, the second to systematic effects and the third to knowledge of the parton density functions. This result agrees with the current world average from the Particle Data Group fit.
Measurement Of The Forward Backward Asymmetry In B0 And Bar U039b B0 Baryon Production In P Bar P Collisions At Sqrt S
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language : en
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Release Date : 2015
Measurement Of The Forward Backward Asymmetry In B0 And Bar U039b B0 Baryon Production In P Bar P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
We measure the forward-backward asymmetry in the production of ?0b and ?¯0b baryons as a function of rapidity in pp¯ collisions at √s = 1.96 TeV using 10.4 fb-1 of data collected with the D0 detector at the Fermilab Tevatron collider. The asymmetry is determined by the preference of ?0b or ?¯0b particles to be produced in the direction of the beam protons or antiprotons, respectively. As a result, the measured asymmetry integrated over rapidity y in the range 0.1
Measurement Of The Forward Backward Asymmetry In Lambda B0 And Bar Lambda B 0 Baryon Production In P Bar P Collisions At Sqrt S
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language : en
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Release Date : 2015
Measurement Of The Forward Backward Asymmetry In Lambda B0 And Bar Lambda B 0 Baryon Production In P Bar P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Forward Backward Asymmetry In Lambda B Production And Search For The Xi B And Omega B Baryons In P Bar P Collisions At Sqrt S
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language : en
Publisher:
Release Date : 2015
Forward Backward Asymmetry In Lambda B Production And Search For The Xi B And Omega B Baryons In P Bar P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
We present a search for the heavy-flavor baryons $\Xi_{b}$ (bsd) and $\Omega^{-}_{b}$ in decays $\Xi^{-}_{b}$→ J/[psi]$\Xi^{-}_{b}$ → J/[psi][Lambda][pi]-, J/[psi] → [mu]+ [mu]- and $\Omega^{-}_{b}$ → J/[psi]$\Omega^{-}_{b}$ J/[psi][Lambda] $K^{-}_{b}$, J/[psi] → [mu]+ [mu]- respectively.
Measurement Of The B C Meson Production Fraction And Asymmetry In 7 And 13 Tev Pp Collisions
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Author : R. Aaij
language : en
Publisher:
Release Date : 2019
Measurement Of The B C Meson Production Fraction And Asymmetry In 7 And 13 Tev Pp Collisions written by R. Aaij and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Rare B Meson Forward Backward Asymmetry Using Ads Qcd
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Author : Raymir Mutua
language : en
Publisher:
Release Date : 2015
Rare B Meson Forward Backward Asymmetry Using Ads Qcd written by Raymir Mutua and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Mesons categories.
Meson Production In D Au Collisions At U221a Snn
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language : en
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Release Date : 2015
Meson Production In D Au Collisions At U221a Snn written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
The PHENIX Collaboration has measured ? meson production in d+Au collisions at √sNN=200 GeV using the dimuon and dielectron decay channels. The ? meson is measured in the forward (backward) d-going (Au-going) direction, 1.2 y 2.2 (–2.2
Measurement Of Prompt And Nonprompt J Psi Production In Pp And Ppb Collisions At Sqrt S Nn
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language : en
Publisher:
Release Date : 2017
Measurement Of Prompt And Nonprompt J Psi Production In Pp And Ppb Collisions At Sqrt S Nn written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
This paper reports the measurement of J/psi meson production in proton-proton (pp) and proton-lead (pPb) collisions at a center-of-mass energy per nucleon pair of 5.02 TeV by the CMS experiment at the LHC. The data samples used in the analysis correspond to integrated luminosities of 28 inverse picobarns and 35 inverse nanobarns for pp and pPb collisions, respectively. Prompt and nonprompt J/psi mesons, the latter issuing from the decay of B mesons, are measured in their dimuon decay channels. Differential cross sections are measured in the transverse momentum range of 2