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Title: A quark model calculation of yy->pipi including final-state interactions

Abstract

A quark model calculation of the processes yy->pi+pi- and yy->pipi is performed. At tree level, only charged pions couple to the initial state photons and neutral pions are not exceeded in the final state. However a small but significant cross section is observed. We demonstrate that this may be accounted for by a rotation in isospin space induced by final-state interactions.

Authors:
; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
801504
Report Number(s):
JLAB-THY-00-54; DOE/ER/40150-2186
TRN: US0205501
DOE Contract Number:  
AC05-84ER40150
Resource Type:
Journal Article
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 61; Other Information: PBD: 1 Feb 2000
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; FINAL-STATE INTERACTIONS; ISOSPIN; PHOTONS; PIONS; QUARK MODEL; ROTATION; TREES

Citation Formats

Blundell, H G, Godfrey, S, Hay, G, and Swanson, Eric. A quark model calculation of yy->pipi including final-state interactions. United States: N. p., 2000. Web.
Blundell, H G, Godfrey, S, Hay, G, & Swanson, Eric. A quark model calculation of yy->pipi including final-state interactions. United States.
Blundell, H G, Godfrey, S, Hay, G, and Swanson, Eric. 2000. "A quark model calculation of yy->pipi including final-state interactions". United States.
@article{osti_801504,
title = {A quark model calculation of yy->pipi including final-state interactions},
author = {Blundell, H G and Godfrey, S and Hay, G and Swanson, Eric},
abstractNote = {A quark model calculation of the processes yy->pi+pi- and yy->pipi is performed. At tree level, only charged pions couple to the initial state photons and neutral pions are not exceeded in the final state. However a small but significant cross section is observed. We demonstrate that this may be accounted for by a rotation in isospin space induced by final-state interactions.},
doi = {},
url = {https://www.osti.gov/biblio/801504}, journal = {Physical Review C},
number = ,
volume = 61,
place = {United States},
year = {Tue Feb 01 00:00:00 EST 2000},
month = {Tue Feb 01 00:00:00 EST 2000}
}