Study Of B C J Psi D S And B C J Psi D S Decays In Pp Collisions At Square Root S

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Study Of B C J Psi D S And B C J Psi D S Decays In Pp Collisions At Square Root S

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Author : [Study Group] ATLAS Collaboration CERN
language : en
Publisher:
Release Date : 2022

Study Of B C J Psi D S And B C J Psi D S Decays In Pp Collisions At Square Root S written by [Study Group] ATLAS Collaboration CERN and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.

Prompt And Non Prompt J Psi Production In Pp Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2011

Prompt And Non Prompt J Psi 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 2011 with categories.

The production of J/psi mesons is studied in pp collisions at sqrt(s)=7 TeV with the CMS experiment at the LHC. The measurement is based on a dimuon sample corresponding to an integrated luminosity of 314 inverse nanobarns. The J/psi differential cross section is determined, as a function of the J/psi transverse momentum, in three rapidity ranges. A fit to the decay length distribution is used to separate the prompt from the non-prompt (b hadron to J/psi) component. Integrated over J/psi transverse momentum from 6.5 to 30 GeV/c and over rapidity in the range.

J Psi And Psi 2s Production In Pp Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2012

J Psi And Psi 2s 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 2012 with categories.

A measurement of the J/psi and psi(2S) production cross sections in pp collisions at sqrt(s)=7 TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 inverse picobarns. Using a fit to the invariant mass and decay length distributions, production cross sections have been measured separately for prompt and non-prompt charmonium states, as a function of the meson transverse momentum in several rapidity ranges. In addition, cross sections restricted to the acceptance of the CMS detector are given, which are not affected by the polarization of the charmonium states. The ratio of the differential production cross sections of the two states, where systematic uncertainties largely cancel, is also determined. The branching fraction of the inclusive B to psi(2S) X decay is extracted from the ratio of the non-prompt cross sections to be: BR(B to psi(2S) X) = (3.08 +/- 0.12(stat.+syst.) +/- 0.13(theor.) +/- 0.42(BR[PDG])) 10-̂3.

Observation Of The Decay Mathrm B To Psi 2 Mathrm S Phi 1020 Mathrm K In Pp Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2016

Observation Of The Decay Mathrm B To Psi 2 Mathrm S Phi 1020 Mathrm K 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 2016 with categories.

The decay $ \mathrm{B}^{+} \to \psi(2 \mathrm{S}) \phi(1020) \mathrm{ K }^{+} $ is observed for the first time using data collected from pp collisions at $\sqrt{s} = $ 8 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6 fb$^{-1}$. The branching fraction of this decay is measured, using the mode $\mathrm{B}^{+}\to \psi(2 \mathrm{S}) \mathrm{ K }^{+}$ as normalization, to be (4.0 $\pm$ 0.4 (stat) $\pm$ 0.6 (syst) $\pm$ 0.2 ($\mathcal{B})$)$\times$ 10$^{-6}$, where the third uncertainty is from the imprecision in the normalization channel.

Study Of The B C 2 J Psi D S And B C2 J Psi D S Decays With The Atlas Detector

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Author :
language : en
Publisher:
Release Date : 2016

Study Of The B C 2 J Psi D S And B C2 J Psi D S Decays With The Atlas Detector 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.

In this study, the decays B+c → J/[psi]D+s and B+c → J/[psi] D*+s are studied with the ATLAS detector at the LHC using a dataset corresponding to integrated luminosities of 4.9 and 20.6 fb-1 of pp collisions collected at centre-of-mass energies √s=7 TeV and 8 TeV, respectively. Signal candidates are identified through J/[psi] → [mu]+[mu]- and D(*)+s → [Phi][pi]+([gamma]/[pi]0) decays. With a two-dimensional likelihood fit involving the B+c reconstructed invariant mass and an angle between the [mu]+ and D+s candidate momenta in the muon pair rest frame, the yields of B+c → J/[psi]D+s and B+c → J/[psi] D*+s, and the transverse polarisation fraction in B+c → J/[psi] D*+s decay are measured.

Measurement Of B Hadron Lifetimes In Exclusive Decays Containing A J Psi In P Pbar Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2010

Measurement Of B Hadron Lifetimes In Exclusive Decays Containing A J Psi In P Pbar 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 2010 with categories.

Study Of The B C 2 J Psi D S And B C 2 J Psi D S Decays With The Atlas Detector

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Author :
language : en
Publisher:
Release Date : 2016

Study Of The B C 2 J Psi D S And B C 2 J Psi D S Decays With The Atlas Detector 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 decays B+c → J/[Psi]D+s and B+c → J/[Psi]D*s+ are studied with the ATLAS detector at the LHC using a dataset corresponding to integrated luminosities of 4.9 and 20.6 fb-1 of pp collisions collected at centre-of-mass energies √s = 7 TeV and 8 TeV, respectively. Furthermore, signal candidates are identified through J/[psi] → [mu]+[mu]- and D(*)+s → [Phi][pi]+([gamma]/[pi]0) decays.

Rapidity Dependence Of Inclusive J Over Psi Production In Proton Antiproton Collisions At Square Root S Equals 1 8 Tera Electron Volts

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Author : Tong Hu
language : en
Publisher:
Release Date : 1998

Rapidity Dependence Of Inclusive J Over Psi Production In Proton Antiproton Collisions At Square Root S Equals 1 8 Tera Electron Volts written by Tong Hu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.

J Psi Production In Au Au Collisions At Square Root S Sub Nn

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Author :
language : en
Publisher:
Release Date : 2003

J Psi Production In Au Au Collisions At Square Root S Sub 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 2003 with categories.

This thesis presents the first J/psi production analysis of Au+Au reactions at forward rapidity at [square root]sNN = 200 GeV. In the second year of RHIC running, design energy was achieved in the collisions of both Au+Au ions and proton+proton reactions. The production of the J/psi is measured by the PHENIX experiment in Au+Au collisions as well as in proton-proton collisions. The scientific goal is to investigate the nature of hot, dense nuclear matter capitalizing on the unique properties of the J/psi as a probe of this matter. Recent experimental results by the NA50 collaboration at CERN strongly deviate from the conventional picture that successfully describes data at lower energies. The importance of such a measurement is demonstrated by the wide spectrum of theoretical explanations concerning the existing data. The merits of these models will be explored in a systematic and comprehensive study of the J/psi and open charm in collisions of a variety of species and energy. A survey of the theoretical models is presented and the relevant open charm and J/psi PHENIX measurements are compared.

Search For The Decays B0d Mu Mu B0s Mu Mu And B0s Mu Mu Phi In Pp Collisions At Square Root Of S

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Author : Thomas Speer
language : en
Publisher:
Release Date : 2000

Search For The Decays B0d Mu Mu B0s Mu Mu And B0s Mu Mu Phi In Pp Collisions At Square Root Of S written by Thomas Speer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.