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Titolo:
MEASUREMENT OF THE BRANCHING RATIO +)NU(L))()B(D+-](K)OVER-BAR-ASTERISK(0)L(+)NU(L))/
Autore:
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;
Indirizzi:
UNIV MISSISSIPPI UNIVERSITY MS 38677 CTR BRASILEIRO PESQUISAS FIS RIO JANEIRO BRAZIL UNIV CALIF SANTA CRUZ SANTA CRUZ CA 95064 UNIV CINCINNATI CINCINNATI OH 45221 CINVESTAV IPN IRAPUATO MEXICO FERMILAB NATL ACCELERATOR LAB BATAVIA IL 60510 KANSAS STATE UNIV MANHATTAN KS 66506 UNIV MASSACHUSETTS AMHERST MA 01003 OHIO STATE UNIV COLUMBUS OH 43210 PRINCETON UNIV PRINCETON NJ 08544 UNIV AUTONOMA PUEBLA PUEBLA MEXICO UNIV S CAROLINA COLUMBIA SC 29208 STANFORD UNIV STANFORD CA 94305 TEL AVIV UNIV IL-69978 TEL AVIV ISRAEL TUFTS UNIV MEDFORD MA 02155 UNIV WISCONSIN MADISON WI 53706 YALE UNIV NEW HAVEN CT 06511
Titolo Testata:
Physics letters. Section B
fascicolo: 3-4, volume: 397, anno: 1997,
pagine: 325 - 332
SICI:
0370-2693(1997)397:3-4<325:MOTBR+>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEMILEPTONIC DECAYS; MESON DECAYS; QUARK-MODEL; LATTICE; HEAVY; FRACTIONS; QCD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
E.M. 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

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 hadroproduction experiment E791. Based on signals of 49 +/- 17 events in the 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 obtain 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.

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Documento generato il 09/04/20 alle ore 07:34:52