Differential cross sections of the charge-exchange reaction π^{-}p→π^{0}n in the momentum range from 103 to 178 MeV/c

PHYSICAL REVIEW C(2009)

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摘要
Measured values of the differential cross sections for pion-nucleon charge exchange, pi(-)p ->pi(0)n, are presented for pi(-) momenta of 103,112,120,130,139,152, and 178 MeV/c. Complete angular distributions were obtained by using the Crystal Ball detector at the Alternating Gradient Synchrotron at Brookhaven National Laboratory. Statistical uncertainties of the differential cross sections vary from 3 to 6% in the backward angle region and from 6 to about 20% in the forward region with the exception of the two most forward angles. The systematic uncertainties are estimated to be about 3% for all momenta.
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cross section,elementary particles
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