MEASUREMENT OF A COULOMB INTERACTION EFFECT IN PI(-) PAIRS FROM THE REACTION PTA-]PI(+)PI-X- AT 70 GEV()PI()

Authors
AFANASYEV LG GORCHAKOV OE KARPUKHIN VV KOMAROV VI KRUGLOV VV KULIKOV AV KUPTSOV AV NEMENOV LL NIKITIN MV PUSTYLNIK ZP CHVYROV AS TRUSOV SV YAZKOV VV
Citation
Lg. Afanasyev et al., MEASUREMENT OF A COULOMB INTERACTION EFFECT IN PI(-) PAIRS FROM THE REACTION PTA-]PI(+)PI-X- AT 70 GEV()PI(), Physics of atomic nuclei, 60(6), 1997, pp. 938-951
Citations number
28
Categorie Soggetti
Physics, Nuclear","Physics, Particles & Fields
Journal title
Physics of atomic nuclei → ACNP
ISSN journal
10637788
Volume
60
Issue
6
Year of publication
1997
Pages
938 - 951
Database
ISI
SICI code
1063-7788(1997)60:6<938:MOACIE>2.0.ZU;2-E
Abstract
The production of pi(+)pi(-) pairs in the reaction pTa --> pi(+)pi(-)X at 70 GeV is studied. For pions with laboratory momenta from 0.8 to 2 .4 GeV/c, the two-particle correlation function is measured for c.m.s. relative momenta from the interval 0 less than or equal to q less tha n or equal to 50 MeV/c. For pions produced in the region that is much smaller than 1/m(pi)alpha, Coulomb final-state interaction leads to a sharp increase in the yield of pi(+)pi(-) pairs with q < 10 MeV/c. The effect of Coulomb interaction allows separation of pi(+)pi(-) pairs a ccording to the size of the region of their production.