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Study Of B Meson Production In Ppb Collisions At Sqrt S Rm Nn


Study Of B Meson Production In Ppb Collisions At Sqrt S Rm Nn
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Study Of B Meson Production In Ppb Collisions At Sqrt S Rm Nn


Study Of B Meson Production In Ppb Collisions At Sqrt S Rm Nn
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Author :
language : en
Publisher:
Release Date : 2016

Study Of B Meson Production In Ppb Collisions At Sqrt S Rm 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 2016 with categories.


The production cross sections of the B+, B0, and B0s mesons, and of their charge conjugates, are measured via exclusive hadronic decays in pPb collisions at the center-of-mass energy √sNN = 5.02 TeV with the CMS detector at the CERN LHC. We used the dataset for this analysis and it corresponds to an integrated luminosity of 34.6 nb-1. The production cross sections are measured in the transverse momentum range between 10 and 60 GeV/c. No significant modification is observed compared to proton-proton perturbative QCD calculations scaled by the number of incoherent nucleon-nucleon collisions. Furthermore, these results provide a baseline for the study of in-medium b quark energy loss in PbPb collisions.



Measurement Of Prompt And Nonprompt J Psi Production In Pp And Ppb Collisions At Sqrt S Nn


Measurement Of Prompt And Nonprompt J Psi Production In Pp And Ppb Collisions At Sqrt S Nn
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Author :
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



Study Of W Boson Production In Ppb Collisions At Sqrt S Mathrm Nn


Study Of W Boson Production In Ppb Collisions At Sqrt S Mathrm Nn
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Author :
language : en
Publisher:
Release Date : 2015

Study Of W Boson Production In Ppb Collisions At Sqrt S Mathrm 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 2015 with categories.


Our first study of W boson production in pPb collisions is presented, for bosons decaying to a muon or electron, and a neutrino. The measurements are based on a data sample corresponding to an integrated luminosity of 34.6 nb-1 at a nucleon–nucleon centre-of-mass energy of √sNN= 5.02 TeV, collected by the CMS experiment. The W boson differential cross sections, lepton charge asymmetry, and forward–backward asymmetries are measured for leptons of transverse momentum exceeding 25 GeV/c , and as a function of the lepton pseudorapidity in the.



Study Of Charged Particle Species Produced In Association With B 0 B And B 0 S Mesons In Pp Collisions At Square Root S


Study Of Charged Particle Species Produced In Association With B 0 B And B 0 S Mesons In Pp Collisions At Square Root S
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Author : Denys Usynin
language : en
Publisher:
Release Date : 2005

Study Of Charged Particle Species Produced In Association With B 0 B And B 0 S Mesons In Pp Collisions At Square Root S written by Denys Usynin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.




Study Of Prompt D0 Meson Production In Ppb Collisions At


Study Of Prompt D0 Meson Production In Ppb Collisions At
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Author : LHCb Collaboration
language : en
Publisher:
Release Date : 2017

Study Of Prompt D0 Meson Production In Ppb Collisions At written by LHCb Collaboration 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.




Observation Of Excited B Mesons In P Pbar Collisions A Square Root S


Observation Of Excited B Mesons In P Pbar Collisions A Square Root S
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Author :
language : en
Publisher:
Release Date : 1999

Observation Of Excited B Mesons In P Pbar Collisions A Square Root 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 1999 with categories.


Production of orbitally excited (L = 1) states of B mesons, B{sup **}, is studied using a sample of nearly ten thousand partially reconstructed B mesons collected with the CDF detector from p{anti p} collisions at (square root)s = 1.8 TeV. Ambiguities in the reconstruction of the B flavor and momentum are resolved. The fraction of b quarks that hadronize into an L = 1 state is measured to be 0.28 " 0.06(stat) " 0.03(syst), and the collective mass of the B{sup **} states is measured to be m(B1) = 5.71 " 0.02 GeV/c2 given the mass splittings between the four states.



Study Of Low P T D 0 Meson Production At Cdf Ii In P Bar P Collisions At Sqrt S


Study Of Low P T D 0 Meson Production At Cdf Ii In P Bar P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2012

Study Of Low P T D 0 Meson Production At Cdf Ii 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 2012 with categories.




Study Of Bs0 Meson Production And Measurement Of Bs0 Decays Into A Ds And A Light Meson In E E Collisions At Square Root S


Study Of Bs0 Meson Production And Measurement Of Bs0 Decays Into A Ds And A Light Meson In E E Collisions At Square Root S
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Author : Remi Léandre Albert Louvot
language : en
Publisher:
Release Date : 2012

Study Of Bs0 Meson Production And Measurement Of Bs0 Decays Into A Ds And A Light Meson In E E Collisions At Square Root S written by Remi Léandre Albert Louvot and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.




Study Of Charged Particle Species Produced In Association With B0 B And Bs Mesons In Proton Anti Proton Collisions At S 1 2


Study Of Charged Particle Species Produced In Association With B0 B And Bs Mesons In Proton Anti Proton Collisions At S 1 2
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Author : Denys Usynin
language : en
Publisher:
Release Date : 2005

Study Of Charged Particle Species Produced In Association With B0 B And Bs Mesons In Proton Anti Proton Collisions At S 1 2 written by Denys Usynin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.


The authors study the yields of charged kaons, charged pions, and protons produced in association with B mesons produced in proton-antiproton collisions at center of mass energy 1960 GeV using 355 pb{sup -1} of data collected with the CDF detector at the Fermilab Tevatron. This is the first reported measurements of these yields at a hadron collider. The B mesons are reconstructed using their semileptonic decays: B{sup 0} {yields} {ell}{sup +}D{sup -}X, D{sup -} {yields} K{sup +}{pi}{sup -}{pi}{sup -}; B{sup 0} {yields} {ell}{sup +}D*{sup -}X, D*{sup -} {yields} {pi}{sup -}{bar D}{sup 0}, {bar D}{sup 0} {yields} K{sup +}{pi}{sup -}; B{sup +} {yields} {ell}{sup +}{bar D}{sup 0}X, {bar D}{sup 0} {yields} K{sup +}{pi}{sup -}; B{sub s}{yields}{ell}{sup +}D{sub s}{sup -}X, D{sub s}{sup -} {yields} {pi}{sup -}{phi}, {phi} {yields} K{sup +}K{sup -}. The K, {pi}, and p are identified using the Time of Flight detector (TOF), the CDF spectrometer, and the specific ionization (dE/dx) measured in the central drift chamber (COT). The fraction of charged kaons produced in association with {bar B}{sub s}{sup 0} mesons is found to be larger than the fraction produced in association with the {bar B}{sup 0} and B{sup -} mesons, as expected from naive models of heavy quark hadronization to mesons. The particle species yields are found to be in qualitative agreement with simulation of B meson production in hadron collisions from the PYTHIA Monte Carlo, although the yield of kaons around {bar B}{sub s}{sup 0} mesons is found to be larger in the simulation when compared to the data. These studies are important for understanding methods of identifying the flavor of {bar B}{sub s}{sup 0} mesons in measurement of {bar B}{sub s}{sup 0} flavor oscillations and charge conjugation-parity (CP) violation in {bar B}{sub s}{sup 0} meson decays.



Study Of Z Boson Production In Ppb Collisions At U221a Snn


Study Of Z Boson Production In Ppb Collisions At U221a Snn
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Author :
language : en
Publisher:
Release Date : 2016

Study Of Z Boson Production In Ppb 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 2016 with categories.


The production of Z bosons in pPb collisions at √sNN = 5.02TeV is studied by the CMS experiment via the electron and muon decay channels. The inclusive cross section is compared to pp collision predictions, and found to scale with the number of elementary nucleon-nucleon collisions. The differential cross sections as a function of the Z boson rapidity and transverse momentum are measured. Though they are found to be consistent within uncertainty with theoretical predictions both with and without nuclear effects, the forward-backward asymmetry suggests the presence of nuclear effects at large rapidities. These results provide new data for constraining nuclear parton distribution functions.