Measurement of a Coulomb interaction effect in pi(+)pi(-) pairs from the reaction pTa->pi(+)pi X at 70 GeVстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Местоположение издательства:Road Town, United Kingdom
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Аннотация: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 than 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 according to the
size of the region of their production.