A Study of High Transverse Momentum pi0's at ISR Energies

We present a study of the transverse momentum spectrum of π 0 's produced at c.m. angles θ = 90° and 53° in pp collisions at √ s = 23.6, 30.8, 45.1, 53.2, and 62.9 GeV. The experiment was performed with a lead-glass detector. The data can be described with the usual parametrization p T −n ƒ;(x T , θ) , with n = 7.2 ± 0.2. Comparison between the 90° and 53° data further indicates no appreciable dependence on θ , at least for x T < 0.3. Two-particle inclusive cross sections for π 0 's produced alongside are also presented. They are observed to have a dependence upon the transverse momentum of the dipion similar to that of single-particle cross sections and with the same value of n . Two-photon decays of η mesons are observed between 3 and 4 GeV/ c transverse momentum with a production cross section half of that of π 0 .

P P: COLLIDING BEAMS
COLLIDING BEAMS: P P
P P: INCLUSIVE REACTION
PI0: PRODUCTION
PRODUCTION: PI0
PI0: TRANSVERSE MOMENTUM
TRANSVERSE MOMENTUM: HIGH
TRANSVERSE MOMENTUM: SPECTRUM
SPECTRUM: TRANSVERSE MOMENTUM
PARTICLE IDENTIFICATION: PI0

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Figures(0)

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