Published September 1998
| Version v1
Journal article
Evidence for Parton kT Effects in High-pT Particle Production
Creators
- Bacigalupi, J.1
- Mani, S.1
- Pellett, D.1
- Choudhary, B.2
- Kapoor, V.2
- Shivpuri, R.2
- Zutshi, V.2
- Baker, W.3
- Johnstone, C.3
- Lukens, P.3
- Skow, D.3
- Apanasevich, L.4
- Bromberg, C.4
- Huston, J.4
- Maul, A.4
- Miller, R.4
- Sorrell, L.4
- Yosef, C.4
- Chang, P.5
- Dlugosz, W.5
- Garelick, D.5
- Glaubman, M.5
- Lirakis, C.5
- Striley, D.5
- Yasuda, T.5
- Gutierrez, P.6
- Kuehler, J.6
- Hartman, K.7
- Oh, B.Y.7
- Toothacker, W.7
- Whitmore, J.J.7
- Blusk, S.8
- Chung, W.H.8
- Engels, E. Jr.8
- Shepard, P.8
- Weerasundara, D.8
- Begel, M.9
- Barbaro, L. de9
- DeSoi, W.9
- Dunlea, J.9
- Fanourakis, G.9
- Ferbel, T.9
- Ftacnik, J.9
- Ginther, G.9
- Lobkowicz, F.9
- Mansour, J.9
- Osborne, G.9
- Prebys, E.9
- Roser, R.9
- Slattery, P.9
- Varelas, N.9
- Zielinski, M.9
- 1. University of California-Davis, Davis, California 95616 (United States)
- 2. University of Delhi, Delhi, (India) 110007
- 3. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
- 4. Michigan State University, East Lansing, Michigan 48824 (United States)
- 5. Northeastern University, Boston, Massachusetts 02115 (United States)
- 6. University of Oklahoma, Norman, Oklahoma 73019 (United States)
- 7. Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
- 8. University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)
- 9. University of Rochester, Rochester, New York 14627 (United States)
Description
Inclusive π0 and direct-photon cross sections in the kinematic range 3.5<pT<12 GeV/c with central rapidities (ycm ) are presented for 530 and 800 GeV/c proton beams and a 515 GeV/c π- beam incident on Be targets. Current next-to-leading-order perturbative QCD calculations fail to adequately describe the data for conventional choices of scales. Kinematic distributions from these hard scattering events provide evidence that the interacting partons carry significant initial-state parton transverse momentum (kT ). Incorporating these kT effects phenomenologically greatly improves the agreement between calculations and the measured cross sections. copyright 1998 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 81
- Journal Issue
- 13
- Journal Page Range
- p. 2642-2645
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 30006369
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- BERYLLIUM; CROSS SECTIONS; LINEAR MOMENTUM; PARTICLE PRODUCTION; PARTON MODEL; PION MINUS REACTIONS; PIONS NEUTRAL; PROTON BEAMS; QUANTUM CHROMODYNAMICS; TRANSVERSE MOMENTUM
- Descriptors DEC
- ALKALINE EARTH METALS; BEAMS; BOSONS; COMPOSITE MODELS; ELEMENTARY PARTICLES; ELEMENTS; FIELD THEORIES; HADRON REACTIONS; HADRONS; LINEAR MOMENTUM; MATHEMATICAL MODELS; MESON REACTIONS; MESONS; METALS; NUCLEAR REACTIONS; NUCLEON BEAMS; PARTICLE BEAMS; PARTICLE MODELS; PION REACTIONS; PIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY