ITA
ENG

TAU DECAYS INTO 3 CHARGED LEPTONS AND 2 NEUTRINOS

Authors

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 WANKE R WOLF A ZOELLER MM FU X NEMATI B RICHICHI SJ 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 JESSOP CP LINGEL K MARSISKE H PERL ML SCHAFFNER SF WANG R COAN TE DOMINICK J FADEYEV V KOROLKOV I LAMBRECHT M SANGHERA S SHELKOV V STROYNOWSKI R VOLOBOUEV I WEI G ARTUSO M EFIMOV A GAO M GOLDBERG M HE D HORWITZ N KOPP S MONETI GC MOUNTAIN R MUKHIN Y PLAYFER S SKWARNICKI T STONE S XING X BARTELT J CSORNA SE JAIN V MARKA S GIBAUT D KINOSHITA K POMIANOWSKI P SCHRENK S BARISH B CHADHA M CHAN S EIGEN G MILLER JS OGRADY C SCHMIDTLER M 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 ROY J SMITH JG ALEXANDER JP BEBEK C BERGER BE BERKELMAN K BLOOM K CASSEL DG CHO HA COFFMAN DM CROWCROFT DS DICKSON M DRELL PS DUMAS DJ EHRLICH R ELIA R GAIDAREV P GALIK RS GITTELMAN B GRAY SW HARTILL DL HELTSLEY BK 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 WARD C AVERY P FREYBERGER A PRESCOTT C YANG S YELTON J BRANDENBURG G BRIERE RA CINABRO D LIU T SAULNIER M WILSON R YAMAMOTO H BROWDER TE LI F RODRIGUEZ JL BERGFELD T EISENSTEIN BI ERNST J GLADDING FE GOLLIN GD PALMER M SELEN M THALER JJ EDWARDS KW MCLEAN KW OGG M BELLERIVE A BRITTON DI 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

Citation

Ms. Alam et al., TAU DECAYS INTO 3 CHARGED LEPTONS AND 2 NEUTRINOS, Physical review letters, 76(15), 1996, pp. 2637-2641

Citations number

Categorie Soggetti

Physics

Journal title

Physical review letters → ACNP

ISSN journal

00319007

Volume

Issue

Year of publication

1996

Pages

2637 - 2641

Database

ISI

SICI code

0031-9007(1996)76:15<2637:TDI3CL>2.0.ZU;2-N

Abstract

We search for the radiative leptonic tau decays tau --> ee(+) e(-)nu(t au)nu(e) and tau --> mu e(+)e(-)nu(tau)nu(mu) using 3.60 fb(-1) of dat a collected by the CLEO-II experiment at the Cornell Electron Storage Ring. We present a first observation of the tau --> ee(+)e(-)nu(tau)nu (e) process. For this channel we measure the branching fraction B(tau --> ee(+)e(-)nu(tau)nu(e)) = (2.7(-1.1-0.4-0.3)(+1.5+0.4+0.1)) X 10(-5 ). An upper limit is established for the second channel: B(tau --> mu e(+)e(-)nu(tau)nu(mu)) < 3.2 X 10(-5) at 90% C.L. Both results are con sistent with the rates expected from standard model predictions.