Skip to main content
Article thumbnail
Location of Repository

General positivity bounds for spin observables in particle inclusive production

By Zhong-Bo Kang and Jacques Soffer

Abstract

Positivity constraints, derived initially assuming parity conservation, for the inclusive reaction of the type $A({spin 1/2})+B({spin 1/2})\to C+X$, where the spins of both initial spin-1/2 particles can be in any possible directions and no polarization is observed in the final state, are generalized to the case of parity violation. By means of a systematic method, we obtain non-trivial bounds involving all the spin observables of the reaction and we discuss some relevant physics processes. Particularly we discover a non-trivial positivity constraint for the processes, $pp\to W^{\pm}/Z^0+X$ or $pp\to \ell^{\pm}+X$ where $\ell^{\pm}$ decayed from $W^{\pm}/Z^0$, which could be checked at the ongoing longitudinal spin program at RHIC.Comment: 12 pages, 3 figures, version to be published in Physical Review

Topics: High Energy Physics - Phenomenology
Year: 2011
DOI identifier: 10.1103/PhysRevD.83.114020
OAI identifier: oai:arXiv.org:1104.2920
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://arxiv.org/abs/1104.2920 (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.