A MODEL-INDEPENDENT DETERMINATION OF THE INCLUSIVE SEMILEPTONIC DECAYFRACTION OF B-MESONS

Authors
ALBRECHT H EHRLICHMANN H HAMACHER T HOFMANN RP KIRCHHOFF T NAU A NOWAK S SCHRODER H SCHULZ HD WALTER M WURTH R HAST C KOLANOSKI H KOSCHE A LANGE A LINDNER A MANKEL R SCHIEBER M SIEGMUND T SPAAN B THURN H TOPFER D WEGENER D BITTNER M ECKSTEIN P PAULINI M REIM K WEGENER H ECKMANN R MUNDT R OEST T REINER R SCHMIDTPARZEFALL W FUNK W STIEWE J WERNER S EHRET K HOFMANN W HUPPER A KHAN S KNOPFLE KT SEEGER M SPENGLER J BRITTON DI CHARLESWORTH CEK EDWARDS KW HYATT ERF KAPITZA H KRIEGER P MACFARLANE DB PATEL PM PRENTICE JD SAULL PRB TZAMARIUDAKI K VANDEWATER RG YOON TS RESSING D SCHMIDTLER M SCHNEIDER M SCHUBERT KR STRAHL K WALDI R WESELER S KERNEL G KRIZAN P KRIZNIC E PODOBNIK T ZIVKO T BALAGURA V BELYAEV I CHECHELNITSKY S DANILOV M DROUTSKOY A GERSHTEIN Y GOLUTVIN A KOSTINA G LITVINTSEV D LUBIMOV V PAKHLOV P RATNIKOV F SEMENOV S SNIZHKO A SOLOSHENKO V TICHOMIROV I ZAITSEY Y
Citation
H. Albrecht et al., A MODEL-INDEPENDENT DETERMINATION OF THE INCLUSIVE SEMILEPTONIC DECAYFRACTION OF B-MESONS, Physics letters. Section B, 318(2), 1993, pp. 397-404
Citations number
28
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
318
Issue
2
Year of publication
1993
Pages
397 - 404
Database
ISI
SICI code
0370-2693(1993)318:2<397:AMDOTI>2.0.ZU;2-#
Abstract
With the ARGUS detector at the e+e- storage ring DORIS II, we have det ermined decay fraction and electron momentum spectrum of the inclusive decay mode B --> e(upsilon) X. Using lepton tags from the second B me son in 209 000 UPSILON(4S) --> BBBAR decays, we could determine the sp ectrum for all electron momenta p(e) > 0.6 GeV/c. Including the small extrapolation to p(e) > 0, we find the model-independent decay fractio n beta(B --> eupsilonX) = (9.6 +/- 0.5 +/- 0.4)%. Adding D meson tags, our result is (9.7 +/- 0.5 +/- 0.4)%.