# Production of hadrons at large transverse momentum in 200-, 300-, and 400-GeV p-p and p-nucleus collisions

## Abstract

Measurements of the invariant cross section Ed/sup 3/sigma/d/sup 3/p are presented for the production of hadrons (..pi.., K, p, and p-bar) at large transverse momentum (p/sub perpendicular/) by 200-, 300-, and 400-GeV protons incident on H/sub 2/, D/sub 2/, Be, Ti, and W targets. The measurements were made at a laboratory angle of 77 mrad, which corresponds to angles near 90/sup 0/ in the c.m. system of the incident proton and a single nucleon at rest. The range in p/sub perpendicular/ for the data is 0.77 < or = p/sub perpendicular/ < or = 6.91 GeV/c, corresponding to values of the scaling variable x/sub perpendicular/ = 2p/sub perpendicular//..sqrt..s from 0.06 to 0.64. For p-p collisions, the pion cross sections can be represented in the region x/sub perpendicular/ > 35 by the form (1/p/sub perpendicular//sup tsn/)(1 - x/sub perpendicular/)/sup b/, with n = 8 and b = 9. The ratio of ..pi../sup +/ to ..pi../sup -/ production grows as a function of x/sub perpendicular/ to a value larger than 2 at x/sub perpendicular/ > or approx. = 0.5. The ratios of the production of K/sup +/ and protons to ..pi../sup +/ and of K/sup -/ and antiprotons to ..pi../sup -/ alsomore »

- Authors:

- Publication Date:

- Research Org.:
- The Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago, Illinois 60637

- OSTI Identifier:
- 6461198

- Resource Type:
- Journal Article

- Journal Name:
- Phys. Rev., D; (United States)

- Additional Journal Information:
- Journal Volume: 19:3

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANTIPROTONS; PARTICLE PRODUCTION; BERYLLIUM 9 TARGET; PROTON REACTIONS; DEUTERIUM TARGET; KAONS; PIONS; PROTON-PROTON INTERACTIONS; PROTONS; TITANIUM; TUNGSTEN; ANGULAR DISTRIBUTION; CROSS SECTIONS; EXPERIMENTAL DATA; GEV RANGE 100-1000; ISOLATED VALUES; PARTICLE IDENTIFICATION; QUANTUM CHROMODYNAMICS; SCINTILLATION COUNTERS; TRANSVERSE MOMENTUM; ANTIBARYONS; ANTIMATTER; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYON REACTIONS; BARYON-BARYON INTERACTIONS; BARYONS; BOSONS; CHARGED-PARTICLE REACTIONS; DATA; DATA FORMS; DISTRIBUTION; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; FERMIONS; FIELD THEORIES; GEV RANGE; HADRON REACTIONS; HADRON-HADRON INTERACTIONS; HADRONS; INFORMATION; INTERACTIONS; LINEAR MOMENTUM; MEASURING INSTRUMENTS; MESONS; METALS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; NUCLEON-NUCLEON INTERACTIONS; NUCLEONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PROTON-NUCLEON INTERACTIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; RADIATION DETECTORS; REFRACTORY METALS; STRANGE PARTICLES; TARGETS; TRANSITION ELEMENTS; 645103* - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Interactions & Baryon & Meson Properties

### Citation Formats

```
Antreasyan, D., Cronin, J.W., Frisch, H.J., Shochet, M.J., Kluberg, L., Piroue, P.A., and Sumner, R.L.
```*Production of hadrons at large transverse momentum in 200-, 300-, and 400-GeV p-p and p-nucleus collisions*. United States: N. p., 1979.
Web. doi:10.1103/PhysRevD.19.764.

```
Antreasyan, D., Cronin, J.W., Frisch, H.J., Shochet, M.J., Kluberg, L., Piroue, P.A., & Sumner, R.L.
```*Production of hadrons at large transverse momentum in 200-, 300-, and 400-GeV p-p and p-nucleus collisions*. United States. doi:10.1103/PhysRevD.19.764.

```
Antreasyan, D., Cronin, J.W., Frisch, H.J., Shochet, M.J., Kluberg, L., Piroue, P.A., and Sumner, R.L. Thu .
"Production of hadrons at large transverse momentum in 200-, 300-, and 400-GeV p-p and p-nucleus collisions". United States. doi:10.1103/PhysRevD.19.764.
```

```
@article{osti_6461198,
```

title = {Production of hadrons at large transverse momentum in 200-, 300-, and 400-GeV p-p and p-nucleus collisions},

author = {Antreasyan, D. and Cronin, J.W. and Frisch, H.J. and Shochet, M.J. and Kluberg, L. and Piroue, P.A. and Sumner, R.L.},

abstractNote = {Measurements of the invariant cross section Ed/sup 3/sigma/d/sup 3/p are presented for the production of hadrons (..pi.., K, p, and p-bar) at large transverse momentum (p/sub perpendicular/) by 200-, 300-, and 400-GeV protons incident on H/sub 2/, D/sub 2/, Be, Ti, and W targets. The measurements were made at a laboratory angle of 77 mrad, which corresponds to angles near 90/sup 0/ in the c.m. system of the incident proton and a single nucleon at rest. The range in p/sub perpendicular/ for the data is 0.77 < or = p/sub perpendicular/ < or = 6.91 GeV/c, corresponding to values of the scaling variable x/sub perpendicular/ = 2p/sub perpendicular//..sqrt..s from 0.06 to 0.64. For p-p collisions, the pion cross sections can be represented in the region x/sub perpendicular/ > 35 by the form (1/p/sub perpendicular//sup tsn/)(1 - x/sub perpendicular/)/sup b/, with n = 8 and b = 9. The ratio of ..pi../sup +/ to ..pi../sup -/ production grows as a function of x/sub perpendicular/ to a value larger than 2 at x/sub perpendicular/ > or approx. = 0.5. The ratios of the production of K/sup +/ and protons to ..pi../sup +/ and of K/sup -/ and antiprotons to ..pi../sup -/ also scale with x/sub perpendicular/ for p-p collisions. The K/sup + -/, p, and p-bar fitted values for n and b are given. Particle ratios are also presented for D/sub 2/, Be, Ti, and W targets and the dependences on atomic weight (A) are discussed.},

doi = {10.1103/PhysRevD.19.764},

journal = {Phys. Rev., D; (United States)},

number = ,

volume = 19:3,

place = {United States},

year = {1979},

month = {2}

}