MEASUREMENT OF THE BRANCHING RATIO +)NU(L))()B(D+-](K)OVER-BAR-ASTERISK(0)L(+)NU(L))/

Authors
AITALA EM AMATO S ANJOS JC APPEL JA ASHERY D BANERJEE S BEDIAGA I BLAYLOCK G BRACKER SB BURCHAT PR BURNSTEIN RA CARTER T CARVALHO HS COPTY NK CREMALDI LM DARLING C DENISENKO K FERNANDEZ A GAGNON P GOUNDER K HALLING AM HERRERA G HURVITS G JAMES C KASPER PA KWAN S LANGS DC LESLIE J LUNDBERG B MAYTALBECK S MEADOWS B NETO JRTD MILBURN RH DEMIRANDA JM NAPIER A NGUYEN A DOLIVEIRA AB OSHAUGHNESSY K PENG KC PERERA LP PUROHIT MV QUINN B RADEZTSKY S RAFATIAN A REAY NW REIDY JJ DOSREIS AC RUBIN HA SANTHA AKS SANTORO AFS SCHWARTZ AJ SHEAFF M SIDWELL RA SLAUGHTER AJ SOKOLOFF MD STANTON NR STENSON K SUMMERS DJ TAKACH S THORNE K TRIPATHI AK WATANABE S WEISSBABAI R WIENER J WITCHEY N WOLIN E YI D YOSHIDA S ZALIZNYAK R ZHANG C
Citation
Em. Aitala et al., MEASUREMENT OF THE BRANCHING RATIO +)NU(L))()B(D+-](K)OVER-BAR-ASTERISK(0)L(+)NU(L))/, Physics letters. Section B, 397(3-4), 1997, pp. 325-332
Citations number
29
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
397
Issue
3-4
Year of publication
1997
Pages
325 - 332
Database
ISI
SICI code
0370-2693(1997)397:3-4<325:MOTBR+>2.0.ZU;2-H
Abstract
We report a measurement of the branching ratio B(D+ --> rho(0)l(+)nu(l ))/B(D+ --> <(K)over bar ()0>l(+)nu(l))) from the Fermilab charm hadr oproduction experiment E791. Based on signals of 49 +/- 17 events in t he D+ --> rho(0)e(+)nu(e) mode and 54 +/- 18 events in the D+ --> rho( 0) mu(+)nu(mu), mode, we measureB(D+ --> rho(0)e(+)nu(e))/B(D+ --> <(K )over bar ()0>e(+)nu(e)) = 0.045 +/- 0.014 +/- 0.009, B(D+ --> rho(0) mu(+)nu(mu))/B(D+ --> <(K)over bar ()0> = 0.051 +/- 0.015 +/- 0.009. Combining the results from both the electronic and muonic modes, we o btain B(D+ --> rho(0)l(+)nu(l))/B(D+ --> <(K)over bar ()0>l(+)nu(l)) = 0.047 +/- 0.013. This result is compared to theoretical predictions. (C) 1997 Published by Elsevier Science B.V.