Measurement Of The Differential Cross Section With Respect To Momentum And Rapidity Of The J Psi Meson And The Non Prompt J Psi Cross Section Fraction In Pp Collisions At Square Root Of S
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Measurement Of The Differential Cross Section With Respect To Momentum And Rapidity Of The J Psi Meson And The Non Prompt J Psi Cross Section Fraction In Pp Collisions At Square Root Of S
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Author : Andrew James Nelson
language : en
Publisher:
Release Date : 2011
Measurement Of The Differential Cross Section With Respect To Momentum And Rapidity Of The J Psi Meson And The Non Prompt J Psi Cross Section Fraction In Pp Collisions At Square Root Of S written by Andrew James Nelson 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.
Energy Research Abstracts
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Author :
language : en
Publisher:
Release Date : 1978
Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Power resources categories.
Energy Research Abstracts
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Author :
language : en
Publisher:
Release Date : 1978
Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Power resources categories.
Bulletin Of The Atomic Scientists
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Author :
language : en
Publisher:
Release Date : 1970-06
Bulletin Of The Atomic Scientists written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970-06 with categories.
The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
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.
Measurement Of The Prompt Double J Psi Production Cross Section In Pp Collisions At Sqrt S
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Author : Andrew David York
language : en
Publisher:
Release Date : 2013
Measurement Of The Prompt Double J Psi Production Cross Section In Pp Collisions At Sqrt S written by Andrew David York and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Mesons categories.
The simultaneous production of two J/psi mesons has been significantly observed in proton-proton collisions at a center-of-mass energy of 7 TeV with the CMS detector. The two J/psi mesons are fully reconstructed in their decay to muons. The signal yield is extracted with an extended maximum likelihood fit based on four event variables. A method was developed to correct for detector acceptances and efficiencies based on the measured momenta of the J/psi and their decay muons to maintain the least model dependence possible. The measurement is performed in an acceptance region defined by the individual J/psi transverse momentum and rapidity. From the measured signal yield of 446 events corresponding to an integrated luminosity of 4:7 inverse femtobarn. The total cross section is found to be 1:49 nanobarn, with 0:07 statistical and 0:13 nb systematic error, and unpolarizaed production was assumed. Most predictions for particle production at the LHC assume dominance of single parton interaction for proton-proton collisions, which can be tested with the final state measured in this analysis. The differential cross section is measured in bins of the double J/psi invariant mass, the double J/psi transverse momentum, and the absolute difference in rapidity of the two J/psi. The reconstruction of the four charged muon trajectories heavily relies on the Pixel subdetector located close to the beampipe. Systematic studies with cosmic muons and tracks from collision events are presented. The development of the Pixel RawToDigi package, data quality monitoring packages, commissioning studies of Pixel data and tracks in first collisions, and realistic simulations of decay signals in the pixel subdetector were all performed as a part of this dissertation work.
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
Measurement Of J Psi Meson And B Hadron Production Cross Section At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2006
Measurement Of J Psi Meson And B Hadron Production Cross Section 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 2006 with categories.
A new measurement of the inclusive and differential production cross sections of J/[psi] mesons and b-hadrons in proton-antiproton collisions at √s = 1960 GeV is presented. The data correspond to an integrated luminosity of 39.7 pb−1 collected by the CDF Run II detector. The integrated cross section for inclusive J/[psi] production for all transverse momenta from 0 to 20 GeV/c in the rapidity range
Measurement Of The J Psi Meson And B Hadron Production Cross Sections In P Anti P Collisions At S Nn 1 2
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Author :
language : en
Publisher:
Release Date : 2004
Measurement Of The J Psi Meson And B Hadron Production Cross Sections In P Anti P Collisions At S Nn 1 2 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
We present a new measurement of the inclusive and differential production cross sections of J/[psi] mesons and b-hadrons in proton-antiproton collisions at √s = 1960 GeV. The data correspond to an integrated luminosity of 39.7 pb−1 collected by the CDF Run II detector. We find the integrated cross section for inclusive J/[psi] production for all transverse momenta from 0 to 20 GeV/c in the rapidity range
Measurement Of The Differential Cross Sections Of Inclusive Prompt And Non Prompt J Psi Production In Proton Proton Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2013
Measurement Of The Differential Cross Sections Of Inclusive Prompt And Non Prompt J Psi Production In Proton Proton 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 2013 with categories.