Strangeness Suppression of q(q)over-bar Creation Observed in Exclusive Reactions

Authors

A. El Alaoui
C. I. Moody
M. H. Wood
K. A. Griffioen, William & Mary

Document Type

Article

Department/Program

Physics

Pub Date

2014

First Page

15

Abstract

We measured the ratios of electroproduction cross sections from a proton target for three exclusive meson-baryon final states: AK(+), p pi(0), and n pi(+), with the CLAS detector at Jefferson Lab. Using a simplemodel of quark hadronization, we extract q (q) over bar creation probabilities for the first time in exclusive two-body production, in which only a single q (q) over bar pair is created. We observe a sizable suppression of strange quark-antiquark pairs compared to nonstrange pairs, similar to that seen in high-energy production.

Recommended Citation

El Alaoui, A.; Moody, C. I.; Wood, M. H.; and Griffioen, K. A., Strangeness Suppression of q(q)over-bar Creation Observed in Exclusive Reactions (2014).
https://doi.org/10.1103/PhysRevLett.113.152004

DOI

https://doi.org/10.1103/PhysRevLett.113.152004