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Titolo:
SINGLE-SPIN ASYMMETRIES AND INVARIANT CROSS-SECTIONS OF THE HIGH TRANSVERSE-MOMENTUM INCLUSIVE PI(0) PRODUCTION IN 200 GEV C PP AND (P)OVER-BAR-P INTERACTIONS/
Autore:
ADAMS DL; AKCHURIN N; BELIKOV NI; BRAVAR A; BYSTRICKY J; CORCORAN MD; COSSAIRT JD; CRANSHAW J; DEREVSCHIKOV AA; ENYO H; FUNAHASHI H; GOTO Y; GRACHOV OA; GROSNICK DP; HILL DA; IIJIMA T; IMAI K; ITOW Y; IWATANI K; KRUEGER KW; KURODA K; LEHAR F; DELESQUEN A; LOPIANO D; LUEHRING FC; MAKI T; MAKINO S; MASAIKE A; MATULENKO YA; MESCHANIN AP; MICHALOWICZ A; MILLER DH; MIYAKE K; NAGAMINE T; NESSITEDALDI F; NESSI M; NGUYEN C; NURUSHEV SB; OHASHI Y; ONEL Y; PATALAKHA DI; PAULETTA G; PENZO A; READ AL; ROBERTS JB; VANROSSUM L; RYKOV VL; SAITO N; SALVATO G; SCHIAVON P; SHIMA T; SKEENS J; SOLOVYANOV VL; SPINKA H; STANEK RW; TAKASHIMA R; TAKEUTCHI F; TAMURA N; TANAKA N; UNDERWOOD DG; VASILIEV AN; WHITE JL; YAMASHITA S; YOKOSAWA A; YOSHIDA T; ZANETTI A;
Indirizzi:
RICE UNIV,TW BONNER NUCL LAB HOUSTON TX 77251 UNIV IOWA,DEPT PHYS IOWA CITY IA 52242 INST HIGH ENERGY PHYS PROTVINO 142284 RUSSIA CENS F-91191 GIF SUR YVETTE FRANCE FERMILAB NATL ACCELERATOR LAB BATAVIA IL 60510 KYOTO UNIV,DEPT PHYS KYOTO 606 JAPAN ARGONNE NATL LAB ARGONNE IL 60439 HIROSHIMA UNIV HIGASHIHIROSHIMA 724 JAPAN NE OKLAHOMA STATE UNIV TAHLEQUAH OK 74464 PHYS PARTICULES LAB F-74017 ANNECY LE VIEUX FRANCE NORTHWESTERN UNIV,DEPT PHYS EVANSTON IL 60201 UNIV OCCUPAT & ENVIRONM HLTH KITAKYUSHU FUKUOKA 807 JAPAN UNIV UDINE I-33100 UDINE ITALY UNIV TRIESTE,DIPARTIMENTO FIS I-34100 TRIESTE ITALY UNIV MESSINA,DIPARTIMENTO FIS I-98100 MESSINA ITALY KYOTO UNIV KYOTO 612 JAPAN KYOTO SANGYO UNIV KYOTO 612 JAPAN OKAYAMA UNIV OKAYAMA 700 JAPAN LOS ALAMOS NATL LAB LOS ALAMOS NM 87545 OSAKA CITY UNIV OSAKA 558 JAPAN
Titolo Testata:
Physical review. D. Particles and fields
fascicolo: 9, volume: 53, anno: 1996,
pagine: 4747 - 4755
SICI:
0556-2821(1996)53:9<4747:SAAICO>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
COULOMB-NUCLEAR INTERFERENCE; POLARIZED-PROTON-BEAM; ANALYZING POWER; PI-0 PRODUCTION; HARD-SCATTERING; ETA-PRODUCTION; 40 GEV/C; COLLISIONS; ANTIPROTONS; DEPENDENCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
D.L. Adams et al., "SINGLE-SPIN ASYMMETRIES AND INVARIANT CROSS-SECTIONS OF THE HIGH TRANSVERSE-MOMENTUM INCLUSIVE PI(0) PRODUCTION IN 200 GEV C PP AND (P)OVER-BAR-P INTERACTIONS/", Physical review. D. Particles and fields, 53(9), 1996, pp. 4747-4755

Abstract

The pi(0) inclusive and semi-inclusive, single-spin asymmetries have been measured using transversely polarized, 200-GeV/c proton and antiproton beams colliding with an unpolarized hydrogen target. The measured asymmetries are consistent with zero within the experimental uncertainties for the kinematic region -0.15<x(F)<+0.15 and 1<p(T)<4.5 GeV/c. Improvements in the data analysis showed that our earlier large asymmetries at p(T)>3 GeV/c were not correct. These data indicate that PQCDexpectations seem confirmed and the higher-twist contribution to the single-spin asymmetry in pi(0) production at x(F)=0 is not large. Additional evidence for such a conclusion comes from the measurement of a semi-inclusive pi(0) asymmetry, where associated charged particles aredetected opposite to the pi(0) azimuthal direction. This experiment also provides high-statistics data on the inclusive pi(0) cross sections for pp and <(p)over bar p> collisions at root s approximate to 19.4 GeV.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 04:40:10