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Titolo:
STUDY OF THE B-0 SEMILEPTONIC DECAY SPECTRUM AT THE Y(4S) RESONANCE
Autore:
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; 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 D; BLISS DW; BROWER WS; MASEK G; PAAR HP; 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; CASSEL DG; CHO HA; COFFMAN DM; CROWCROFT DS; DICKSON M; DRELL PS; ECKLUND KM; EHRLICH R; ELIA R; FOLAND AD; GAIDAREV P; 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; LOHNER 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 J; GLADDING GE; GOLLIN GD; 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 PM; 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 M; 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 MM; 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 J; 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;
Indirizzi:
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 CALIF SANTA BARBARA SANTA BARBARA CA 93106 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 CHAMPAIGN IL 61801 CARLETON UNIV OTTAWA ON K1S 5B6 CANADA INST PARTICLE PHYS MONTREAL PQ CANADA MCGILL UNIV MONTREAL PQ H3A 2T8 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 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 BINP RU-630090 NOVOSIBIRSK RUSSIA UNIV TEXAS AUSTIN TX 78712 LAWRENCE LIVERMORE NATL LAB LIVERMORE CA 94551
Titolo Testata:
Physics letters. Section B
fascicolo: 3-4, volume: 399, anno: 1997,
pagine: 321 - 328
SICI:
0370-2693(1997)399:3-4<321:SOTBSD>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
BRANCHING FRACTIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
M. Artuso et al., "STUDY OF THE B-0 SEMILEPTONIC DECAY SPECTRUM AT THE Y(4S) RESONANCE", Physics letters. Section B, 399(3-4), 1997, pp. 321-328

Abstract

We have made a first measurement of the lepton momentum spectrum in asample of events enriched in neutral B's through a partial reconstruction of B-0 --> D(-)l(+)<(nu)over bar>. This spectrum, measured with 2.38 fb(-1) of data collected at the Y(4S) resonance by the CLEO II detector, is compared directly to the inclusive lepton spectrum from allY(4S) events in the same data set. These two spectra are consistent with having the same shape above 1.5 GeV/c. From the two spectra and two other CLEO measurements, we obtain the B-0 and B+ semileptonic branching fractions, b(0) and b(+), their ratio, and the production ratio f(+-)/f(00) of B+ and B-0 pairs at the Y(4S). We report b(+)/b(0) = 0.950(-0.080) (+0.117) +/- 0.091, b(0) = (10.78 +/- 0.60 +/- 0.69)%, and b(+) = (10.25 +/- 0.57 +/- 0.65)%. b(+)/b(0) is equivalent to the ratio of charged to neutral B lifetimes, tau(+)/tau(0). (C) 1997 Publishedby Elsevier Science B.V.

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Documento generato il 01/12/20 alle ore 21:58:34