Affordable Access

Publisher Website

Measurements ofJ/ψ→p p ̄

Authors
Journal
Physics Letters B
0370-2693
Publisher
Elsevier
Publication Date
Volume
591
Identifiers
DOI: 10.1016/j.physletb.2004.04.022
Keywords
  • Experiments

Abstract

Abstract The process J/ψ→p p ̄ is studied using 57.7×10 6 J/ ψ events collected with the BESII detector at the Beijing Electron Positron Collider. The branching ratio is determined to be Br(J/ψ→p p ̄ )=(2.26±0.01±0.14)×10 −3 , and the angular distribution is well described by dN d cosθ p =1+α cos 2θ p with α=0.676±0.036±0.042, where θ p is the angle between the proton and beam directions. The value of α obtained is in good agreement with the predictions of first-order QCD.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Nuclear dependence ofJ/ψ and ψ1production

on Nuclear Physics A Jan 01, 1999

ψϒproduction in hadronic collisions

on Physics Letters B Jan 01, 1989

AU(n) generalization of Ramanujan's1Ψ1summation

on Journal of Mathematical Analys... Jan 01, 1986

Frobenius Partitions and the Combinatorics of Rama...

on Journal of Combinatorial Theor... Jan 01, 2002
More articles like this..