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

Mestayer M.D.; Park, K.; Adhikari, K. P.; Aghasyan, M.; Pereira, S. Anefalos; Ball, J.; Battaglieri, M.; Batourine, V.; Bedlinskiy, I.; Biselli, A. S.; Boiarinov, S.; Briscoe, W. J.; Brooks W.K.; Burkert, V. D.; Carman, D. S.; et. al.

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.

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Título según WOS: Strangeness Suppression of q(q)over-bar Creation Observed in Exclusive Reactions
Título según SCOPUS: Strangeness suppression of q q ¯ creation observed in exclusive reactions
Título de la Revista: PHYSICAL REVIEW LETTERS
Volumen: 113
Número: 15
Editorial: AMER PHYSICAL SOC
Fecha de publicación: 2014
Idioma: English
DOI:

10.1103/PhysRevLett.113.152004

Notas: ISI, SCOPUS