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Titolo:
LOW TRANSVERSE-MOMENTUM PHOTON PRODUCTION IN PROTON-NUCLEUS COLLISIONS AT 18 GEV C/
Autore:
TINCKNELL ML; CLARK RL; WOODY C; LISSAUER D; TAKAI H; RAY A; DELCAMPO JG; SHAPIRA D; ERD C; SCHUKRAFT J; WILLIS W;
Indirizzi:
PURDUE UNIV W LAFAYETTE IN 47907 VANDERBILT UNIV NASHVILLE TN 37235 BROOKHAVEN NATL LAB UPTON NY 11973 BHABHA ATOM RES CTR,CTR VARIABLE ENERGY CYCLOTRON CALCUTTA 700064 W BENGAL INDIA OAK RIDGE NATL LAB OAK RIDGE TN 37831 CERN CH-1211 GENEVA SWITZERLAND UNIV TENNESSEE,OAK RIDGE NATL LAB OAK RIDGE TN 37831 UNIV TENNESSEE,JOINT INST HEAVY ION RES OAK RIDGE TN 37831
Titolo Testata:
Physical review. C. Nuclear physics
fascicolo: 4, volume: 54, anno: 1996,
pagine: 1918 - 1929
SICI:
0556-2813(1996)54:4<1918:LTPPIP>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRON-PAIR PRODUCTION; LOW-MASS CONTINUUM; PI-P INTERACTIONS; CERN ISR; DILEPTON; BREMSSTRAHLUNG; 16-GEV/C; CASCADE; MATTER; K+P;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
50
Recensione:
Indirizzi per estratti:
Citazione:
M.L. Tincknell et al., "LOW TRANSVERSE-MOMENTUM PHOTON PRODUCTION IN PROTON-NUCLEUS COLLISIONS AT 18 GEV C/", Physical review. C. Nuclear physics, 54(4), 1996, pp. 1918-1929

Abstract

Inclusive single photon spectra have been measured in the transverse momentum (p(T)) range from a few MeV/c up to approximately 1 GeV/c at various nucleon-nucleon center of momentum rapidities (y(NN)) in the interval from -2.4<y(NN)<+0.5 in 18 GeV/c p-Be and p-W collisions. These distributions were used to estimate the inclusive p(T) and rapidity distributions for pi(0) production over approximately the same kinematic range. The measured photon spectra are compared with the expected distribution of photons from pi(0) decays and hadronic bremsstrahlung in order to search for new sources of ''soft'' photons at low transverse momentum. The results indicate no anomalous sources of soft photons in either p-Be or p-W interactions at these energies. The p-W data at forward angles set a limit on any excess of low p(T) photons at <2.65 times hadronic bremsstrahlung at the 99% C.L.

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Documento generato il 25/11/20 alle ore 04:42:17