ITA
ENG

MEASUREMENT OF THE B-SEMILEPTONIC BRANCHING FRACTION WITH LEPTON TAGS

Authors

BARISH B CHADHA M CHAN S EIGEN G MILLER JS OGRADY C URHEIM J WEINSTEIN AJ WURTHWEIN F ASNER DM ATHANAS M BLISS DW BROWER WS MASEK G PAAR HP GRONBERG J KORTE CM KUTSCHKE R MENARY S MORRISON RJ NAKANISHI S NELSON HN NELSON TK QIAO C RICHMAN JD ROBERTS D RYD A TAJIMA H WITHERELL MS BALEST R CHO K FORD WT LOHNER M PARK H RANKIN P SMITH JG ALEXANDER JP BEBEK C BERGER BE BERKELMAN K BLOOM K BROWDER TE CASSEL DG CHO HA COFFMAN DM CROWCROFT DS DICKSON M DRELL PS DUMAS DJ EHRLICH R ELIA R GAIDAREV P GITTELMAN B GRAY SW HARTILL DL HELTSLEY BK HENDERSON S JONES CD JONES SL KANDASWAMY J KATAYAMA N KIM PC KREINICK DL LEE T LIU Y LUDWIG GS MASUI J MEVISSEN J MISTRY NB NG CR NORDBERG E PATTERSON JR PETERSON D RILEY D SOFFER A AVERY P FREYBERGER A LINGEL K PRESCOTT C RODRIGUEZ J YANG S YELTON J BRANDENBURG G CINABRO D LIU T SAULNIER M WILSON R YAMAMOTO H BERGFELD T EISENSTEIN BI ERNST J GLADDING GE GOLLIN GD PALMER M SELEN M THALER JJ EDWARDS KW MCLEAN KW OGG M BELLERIVE A BRITTON DI HYATT ERF JANICEK R MACFARLANE DB PATEL PM SPAAN B SADOFF AJ AMMAR R BARINGER P BEAN A BESSON D COPPAGE D COPTY N DAVIS R HANCOCK N KOTOV S KRAVCHENKO I KWAK N KUBOTA Y LATTERY M NELSON JK PATTON S POLING R RIEHLE T SAVINOV V WANG R ALAM MS KIM IJ LING Z MAHMOOD AH ONEILL JJ SEVERINI H SUN CR TIMM S WAPPLER F DUBOSCQ JE FULTON R FUJINO D GAN KK HONSCHEID K KAGAN H KASS R LEE J SUNG M WHITE C WOLF A ZOELLER MM FU X NEMATI B ROSS WR SKUBIC P WOOD M BISHAI M FAST J GERNDT E HINSON JW MIAO T MILLER DH MODESITT M SHIBATA EI SHIPSEY IPJ WANG PN GIBBONS L JOHNSON SD KWON Y ROBERTS S THORNDIKE EH COAN TE DOMINICK J FADEYEV V KOROLKOV I LAMBRECHT M SANGHERA S SHELKOV V SKWARNICKI T STROYNOWSKI R VOLOBOUEV I WEI G ARTUSO M GAO M GOLDBERG M HE D HORWITZ N KOPP S MONETI GC MOUNTAIN R MUHEIM F MUKHIN Y PLAYFER S STONE S XING X BARTELT J CSORNA SE JAIN V MARKA S GIBAUT D KINOSHITA K POMIANOWSKI P SCHRENK S

Citation

B. Barish et al., MEASUREMENT OF THE B-SEMILEPTONIC BRANCHING FRACTION WITH LEPTON TAGS, Physical review letters, 76(10), 1996, pp. 1570-1574

Citations number

Categorie Soggetti

Physics

Journal title

Physical review letters → ACNP

ISSN journal

00319007

Volume

Issue

Year of publication

1996

Pages

1570 - 1574

Database

ISI

SICI code

0031-9007(1996)76:10<1570:MOTBBF>2.0.ZU;2-W

Abstract

We have used the CLEO II detector and 2.06 fb(-1) of Y(4S) data to mea sure the B-meson semileptonic branching fraction. The B --> Xe nu mome ntum spectrum was obtained over nearly the full momentum range by usin g charge and kinematic correlations in events with a high-momentum lep ton tag and an additional electron. We find B(B --> Xe nu) = (10.49 +/ - 0.17 +/- 0.43)%, with overall systematic uncertainties less than tho se of untagged single-lepton measurements. We use this result to calcu late the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V-c b and to set an upper limit on the fraction of Y(4S) decays to final s tates other than B (B) over bar.