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MEASUREMENT OF CHARMLESS SEMILEPTONIC DECAYS OF B-MESONS

Authors

BARTELT J CSORNA SE EGYED Z JAIN V AKERIB DS BARISH B CHADHA M CHAN S COWEN DF EIGEN G MILLER JS OGRADY C URHEIM J WEINSTEIN AJ ACOSTA D ATHANAS M MASEK G PAAR H SIVERTZ M BEAN A GRONBERG J KUTSCHKE R MENARY S MORRISON RJ NAKANISHI S NELSON HN NELSON TK RICHMAN JD RYD A TAJIMA H SCHMIDT D SPERKA D WITHERELL MS PROCARIO M YANG S BALEST R CHO K DAOUDI M FORD WT JOHNSON DR LINGEL K LOHNER M RANKIN P SMITH JG ALEXANDER JP BEBEK C BERKELMAN K BESSON D BROWDER TE CASSEL DG CHO HA COFFMAN DM DRELL PS EHRLICH R GARCIASCIVERES M GEISER B GITTELMAN B GRAY SW HARTILL DL HELTSLEY BK JONES CD JONES SL KANDASWAMY J KATAYAMA N KIM PC KREINICK DL LUDWIG GS MASUI J MEVISSEN J MISTRY NB NG CR NORDBERG E OGG M PATTERSON JR PETERSON D RILEY D SALMAN S SAPPER M WORDEN H WURTHWEIN F AVERY P FREYBERGER A RODRIGUEZ J STEPHENS R YELTON J CINABRO D HENDERSON S KINOSHITA K LIU T SAULNIER M SHEN F WILSON R YAMAMOTO H ONG B SELEN M SADOFF AJ AMMAR R BALL S BARINGER P COPPAGE D COPTY N DAVIS R HANCOCK N KELLY M KWAK N LAM H KUBOTA Y LATTERY M NELSON JK PATTON S PERTICONE D POLING R SAVINOV V SCHRENK S WANG R ALAM MS KIM IJ NEMATI B ONEILL JJ SEVERINI H SUN CR ZOELLER MM CRAWFORD G DAUBENMEIER M FULTON R FUJINO D GAN KK HONSCHEID K KAGAN H KASS R LEE J MALCHOW R MORROW F SKOVPEN Y SUNG M WHITE C WHITMORE J WILSON P BUTLER F FU X KALBFLEISCH G LAMBRECHT M ROSS WR SKUBIC P SNOW J WANG PL WOOD M BORTOLETTO D BROWN DN FAST J MCILWAIN RL MIAO T MILLER DH MODESITT M SCHAFFNER SF SHIBATA EI SHIPSEY IPJ WANG PN BATTLE M ERNST J KROHA H ROBERTS S SPARKS K THORNDIKE EH WANG CH CHELKOV V DOMINICK J SANGHERA S SKWARNICKI T STROYNOWSKI R VOLOBOUEV I ZADOROZHNY P ARTUSO M HE D GOLDBERG M HORWITZ N KENNETT R MONETI GC MUHEIM F MUKHIN Y PLAYFER S ROZEN Y STONE S THULASIDAS M VASSEUR G ZHU G

Citation

J. Bartelt et al., MEASUREMENT OF CHARMLESS SEMILEPTONIC DECAYS OF B-MESONS, Physical review letters, 71(25), 1993, pp. 4111-4115

Citations number

Categorie Soggetti

Physics

Journal title

Physical review letters → ACNP

ISSN journal

00319007

Volume

Issue

Year of publication

1993

Pages

4111 - 4115

Database

ISI

SICI code

0031-9007(1993)71:25<4111:MOCSDO>2.0.ZU;2-G

Abstract

Using the CLEO II detector and a sample of 955 000 UPSILON(4S) decays we have confirmed charmless semileptonic decays of B mesons. In the mo mentum interval 2.3-2.6 GeV/c we observe an excess of 107 +/- 15 +/- 1 1 leptons, which we attribute to b --> ulnu. This result yields a mode l-dependent range of values for \V(ub)/V(cb)\ that is lower than has b een obtained in previous studies. For the inclusive spectator model of Altarelli et al. we find \V(ub)/V(cb)\ = 0.076 +/- 0.008. Models that describe b --> ulnu with a limited set of exclusive final states give \V(ub)/V(cb)\ = 0.06 - 0.10.