Measurements Of The Upsilon 1s Upsilon 2s And Upsilon 3s Differential Cross Sections In Pp Collisions At Sqrt S

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Measurements Of The Upsilon 1s Upsilon 2s And Upsilon 3s Differential Cross Sections In Pp Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2015

Measurements Of The Upsilon 1s Upsilon 2s And Upsilon 3s Differential Cross Sections 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.

Differential cross sections as a function of transverse momentum pt are presented for the production of Y(nS) (n = 1, 2, 3) states decaying into a pair of muons. Data corresponding to an integrated luminosity of 4.9 inverse femtobarns in pp collisions at sqrt(s) = 7 TeV were collected with the CMS detector at the LHC. The analysis selects events with dimuon rapidity abs(y)

Inis Atomindex

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language : en
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Release Date : 1983

Inis Atomindex written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Nuclear energy categories.

Government Reports Announcements Index

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language : en
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Release Date : 1988

Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Government publications categories.

Comprehensive Dissertation Index

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language : en
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Release Date : 1989

Comprehensive Dissertation Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Dissertations, Academic categories.

Suppression Of Upsilon 1s Upsilon 2s And Upsilon 3s Production In Pbpb Collisions At Sqrt S Nn

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language : en
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Release Date : 2016

Suppression Of Upsilon 1s Upsilon 2s And Upsilon 3s Production In Pbpb 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 2016 with categories.

The production yields of Upsilon(1S), Upsilon(2S), and Upsilon(3S) quarkonium states are measured through their decays into muon pairs in the CMS detector, in PbPb and pp collisions at the centre-of-mass energy per nucleon pair of 2.76 TeV. The data correspond to integrated luminosities of 166 inverse microbarns and 5.4 inverse picobarns for PbPb and pp collisions, respectively. Differential production cross sections are reported as functions of Upsilon rapidity $y$ up to 2.4, and transverse momentum pt up to 20 GeV/c. A strong centrality-dependent suppression is observed in PbPb relative to pp collisions, by factors of up to ~2 and 8, for the Upsilon(1S) and Upsilon(2S) states, respectively. No significant dependence of this suppression is observed as a function of y or pt. The Upsilon(3S) state is not observed in PbPb collisions, which corresponds to a suppression for the centrality-integrated data by at least a factor of ~7 at a 95% confidence level. The observed suppression is in agreement with theoretical scenarios modeling the sequential melting of quarkonium states in a quark gluon plasma.

Government Reports Annual Index

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language : en
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Release Date : 1983

Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Government reports announcements & index categories.

Measurement Of Upsilon 1s 2s 3s Production In P P And Au Au Collisions At Sqrt S Mathrm Nn

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language : en
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Release Date : 2015

Measurement Of Upsilon 1s 2s 3s Production In P P And Au Au 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.

Measurements of bottomonium production in heavy-ion and p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are presented. The inclusive yield of the three [Upsilon] states, [Upsilon](1S + 2S + 3S), was measured in the PHENIX experiment via electron-positron decay pairs at midrapidity for Au+Au and p+p collisions at \(\sqrt{s_{\mathrm{NN}}}=200\) GeV. The [Upsilon](1S + 2S + 3S) 2!ee− differential cross section at midrapidity was found to be Beed[sigma]/dy = 108 ± 38 (stat) ± 15 (syst) ± 11 (luminosity) pb in p+p collisions. The nuclear modification factor in the 30% most central Au+Au collisions indicates a suppression of the total [Upsilon] state yield relative to the extrapolation from p+p collision data. Thus, the suppression is consistent with measurements at higher energies by the CMS experiment at the Large Hadron Collider.

Measurement Of The Upsilon Ns Cross Sections In Pp Collisions At Sqrt S

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language : en
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Release Date : 2012

Measurement Of The Upsilon Ns Cross Sections 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.

The [Upsilon](nS) production cross sections are measured using a data sample corresponding to an integrated luminosity of 35.8 ± 1.4 pb-1 of proton-proton collisions at √s = 7 TeV, collected with the CMS detector at the CERN LHC.

Measurement Of The Upsilon 1s Production Cross Section In Pp Collisions At Sqrt S

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Author :
language : en
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Release Date : 2013

Measurement Of The Upsilon 1s Production Cross Section 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 2013 with categories.

Measurement Of The Inclusive Upsilon Production Cross Section In Pp Collisions At Sqrt S

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language : en
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Release Date : 2011

Measurement Of The Inclusive Upsilon Production Cross Section 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 Upsilon production cross section in proton-proton collisions at sqrt(s) = 7 TeV is measured using a data sample collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 3.1 +/- 0.3 inverse picobarns. Integrated over the rapidity range.