Production of. pi. /sup +/ and. pi. /sup -/ at large transverse momentum in p--p and p--d collisions at 200, 300, and 400 GeV

Journal Article · Mon Jan 17 00:00:00 EST 1977 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.38.112· OSTI ID:7127754

Antreasyan, D; Cronin, J W; Frisch, H J; Shochet, M J; Kluberg, L; Piroue, P A; Sumner, R L

We have measured the production of ..pi../sup +/ and ..pi../sup -/ in 200-, 300-, and 400-GeV p--p and 400-GeV p--d collisions for transverse momenta (p/sub perpendicular/) ranging from 0.77 to 7.67 GeV/c. At large values of x/sub perpendicular/ = 2p/sub perpendicular//..sqrt..s, where ..sqrt..s is the c.m. energy, we have fitted the p--p data to the form A (1-x/sub perpendicular/)/sup b/p/sub perpendicular/sup-n/; we obtain n = 8.2 +- 0.5 for ..pi../sup +/ and 8.5 +- 0.5 for ..pi../sup -/. At x/sub perpendicular/> 0.3 the ..pi../sup +//..pi../sup -/ ratio in p--p collisions rises appreciably with increasing x/sub perpendicular/, whereas the ..pi../sup +//..pi../sup -/ ratio obtained from the difference of p--d and p--p cross sections is approx. 1.0 at all x/sub perpendicular/. (AIP)

• Research Organization: The Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637
• OSTI ID: 7127754
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 38:3; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BOSONS
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 100-1000
HADRON-HADRON INTERACTIONS
HADRONS
INCLUSIVE INTERACTIONS
INTERACTIONS
LINEAR MOMENTUM
MESONS
MULTIPLICITY
NUCLEON-DEUTERON INTERACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PIONS MINUS
PIONS PLUS
PROTON-DEUTERON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
PSEUDOSCALAR MESONS
TRANSVERSE MOMENTUM