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Titolo:
MEASUREMENT OF THE DIRECT PHOTON SPECTRUM IN Y(1S) DECAYS
Autore:
NEMATI B; RICHICHI SJ; ROSS WR; SKUBIC P; WOOD M; BISHAI M; FAST J; GERNDT E; HINSON JW; MENON N; MILLER DH; SHIBATA EI; SHIPSEY IPJ; YURKO M; GIBBONS L; JOHNSON SD; KWON Y; ROBERTS S; THORNDIKE EH; JESSOP CP; LINGEL K; MARSISKE H; PERL ML; SCHAFFNER SF; UGOLINI D; WANG R; ZHOU X; COAN TE; FADEYEV V; KOROLKOV I; MARAVIN Y; NARSKY I; SHELKOV V; STAECK J; STROYNOWSKI R; VOLOBOUEV I; YE J; ARTUSO M; EFIMOV A; FRASCONI F; GAO M; GOLDBERG M; HE D; KOPP S; MONETI GC; MOUNTAIN R; MUKHIN Y; SCHUH S; SKWARNICKI T; STONE S; VIEHHAUSER G; XING X; BARTELT J; CSORNA SE; JAIN V; MARKA S; FREYBERGER A; GIBAUT D; GODANG R; KINOSHITA K; LAI IC; POMIANOWSKI P; SCHRENK S; BONVICINI G; CINABRO D; GREENE R; PERERA LP; BARISH B; CHADHA M; CHAN S; EIGEN G; MILLER JS; OGRADY C; SCHMIDTLER M; URHEIM J; WEINSTEIN AJ; WURTHWEIN F; ASNER DM; BLISS DW; BROWER WS; MASEK G; PAAR HP; SIVERTZ M; SHARMA V; GRONBERG J; KUTSCHKE R; LANGE DJ; MENARY S; MORRISON RJ; NELSON HN; NELSON TK; QIAO C; RICHMAN JD; ROBERTS D; RYD A; WITHERELL MS; BALEST R; BEHRENS BH; CHO K; FORD WT; PARK H; RANKIN P; ROY J; SMITH JG; ALEXANDER JP; BEBEK C; BERGER BE; BERKELMAN K; BLOOM K; CASSE DG; CHO HA; COFFMAN DM; CROWCROFT DS; DICKSON M; DRELL PS; ECKLUND KM; EHRLICH R; ELIA R; FOLAND AD; GAIDAREV P; GALIK RS; GITTELMAN B; GRAY SW; HARTILL DL; HELTSLEY BK; HOPMAN PI; KANDASWAMY J; KATAYAMA N; KIM PC; KREINICK DL; LEE T; LIU Y; LUDWIG GS; MASUI J; MEVISSEN J; MISTRY NB; NG CR; NORDBERG E; OGG M; PATTERSON JR; PETERSON D; RILEY D; SOFFER A; WARD C; ATHANAS M; AVERY P; JONES CD; LONER M; PRESCOTT C; YANG S; YELTON J; ZHENG J; BRANDENBURG G; BRIERE RA; GAO YS; KIM DYJ; WILSON R; YAMAMOTO H; BROWDER TE; LI F; LI Y; RODRIGUEZ JL; BERGFELD T; EISENSTEIN BI; ERNST I; GLADDING GE; GOLLIN CD; HANS RM; JOHNSON E; KARLINER I; MARSH MA; PALMER M; SELEN M; THALER JJ; EDWARDS KW; BELLERIVE A; JANICEK R; MACFARLANE DB; MCLEAN KW; PATEL PR; SADOFF AJ; AMMAR R; BARINGER P; BEAN A; BESSON D; COPPAGE D; DARLING C; DAVIS R; HANCOCK N; KOTOV S; KRAVCHENKO I; KWAK N; ANDERSON S; KUBOTA Y; LATTERY H; ONEILL JJ; PATTON S; POLING R; RIEHLE T; SAVINOV V; SMITH A; ALAM MS; ATHAR SB; LING Z; MAHMOOD AH; SEVERINI H; TIMM S; WAPPLER F; ANASTASSOV A; BLINOV S; DUBOSCQ JE; FISHER KD; FUJINO D; FULTON R; GAN KK; HART T; HONSCHEID K; KAGAN H; KASS R; LEE J; SPENCER MB; SUNG M; UNDRUS A; WANKE R; WOLF A; ZOELLER MR;
Indirizzi:
UNIV OKLAHOMA NORMAN OK 73019 PURDUE UNIV W LAFAYETTE IN 47907 UNIV ROCHESTER ROCHESTER NY 14627 STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR STANFORD CA 94309 SO METHODIST UNIV DALLAS TX 75275 SYRACUSE UNIV SYRACUSE NY 13244 VANDERBILT UNIV NASHVILLE TN 37235 VIRGINIA POLYTECH INST & STATE UNIV BLACKSBURG VA 24061 WAYNE STATE UNIV DETROIT MI 48202 CALTECH PASADENA CA 91125 UNIV CALIF SAN DIEGO LA JOLLA CA 92093 UNIV COLORADO BOULDER CO 80309 CORNELL UNIV ITHACA NY 14853 UNIV FLORIDA GAINESVILLE FL 32611 HARVARD UNIV CAMBRIDGE MA 02138 UNIV HAWAII MANOA HONOLULU HI 96822 UNIV ILLINOIS URBANA IL 61801 CARLETON UNIV OTTAWA ON K1S 5B6 CANADA ITHACA COLL ITHACA NY 14850 UNIV KANSAS LAWRENCE KS 66045 UNIV MINNESOTA MINNEAPOLIS MN 55455 SUNY ALBANY ALBANY NY 12222 OHIO STATE UNIV COLUMBUS OH 43210 MCGILL UNIV MONTREAL PQ H3A 2T8 CANADA UNIV TEXAS AUSTIN TX 78712 BINP RU-630090 NOVOSIBIRSK RUSSIA LAWRENCE LIVERMORE NATL LAB LIVERMORE CA 94551 UNIV CALIF SANTA BARBARA SANTA BARBARA CA 93106
Titolo Testata:
Physical review. D. Particles and fields
fascicolo: 9, volume: 55, anno: 1997,
pagine: 5273 - 5281
SICI:
0556-2821(1997)55:9<5273:MOTDPS>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
UPSILON(1S) DECAYS; PERTURBATIVE QCD; GLUONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
B. Nemati et al., "MEASUREMENT OF THE DIRECT PHOTON SPECTRUM IN Y(1S) DECAYS", Physical review. D. Particles and fields, 55(9), 1997, pp. 5273-5281

Abstract

Using data taken with the CLEO II detector at the Cornell Electron Storage Ring, we have determined the ratio of branching fractions: R-gamma=Gamma(Upsilon(1S)--> gamma ilon(1S)-->ggg)=[2.75+/-0.04(stat)+/-0.15(syst)]%. From this ratio, we have determined the QCD scale parameterLambda(<(MS)over bar>) (defined in the modified minimal subtraction scheme) to be Lambda(<(MS)over bar>)=233+/-11+/-59 MeV, from which we determine a value for the strong coupling constant alpha(s)(M-gamma(1S))=0.163+/-0.002+/-0.014, or alpha(s)(M-Z)=0.110+/-0.001+/-0.007.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 16:37:52