UPPER LIMITS FOR CHARM HADRON DECAYS TO 2 MUONS PLUS HADRONS

Authors
KODAMA K USHIDA N MOKHTARANI A PAOLONE VS VOLK JT WILCOX JO YAGER PM EDELSTEIN RM FREYBERGER AP GIBAUT DB LIPTON RJ NICHOLS WR POTTER DM RUSS JS ZHANG C ZHANG Y JANG HI KIM JY KIM TI LIM IT PAC MY BALLER BR STEFANSKI RJ NAKAZAWA K CHUNG KS CHUNG SH KIM DC PARK IG PARK MS SONG JS YOON CS ARYAL M REAY NW SIDWELL RA STANTON NR CHIKAWA M ABE T FUJII T FUJIOKA G FUKUSHIMA H HARA T TAKAHASHI Y TARUMA K TSUZUKI Y FUJIWARA K YOKOYAMA C CHANG SD CHEON BG CHO JH KANG JS KIM CO KIM KY KIM TY LEE JC LEE SB LIM GY NAM SW SHIN TS SIM KS WOO JK ISOKANE Y TSUNEOKA Y AOKI S GAUTHIER A HOSHINO K KITAMURA H KOBAYASHI M KOMATSU M MIYANISHI M NAKAMURA K NAKAMURA M NAKAMURA Y NAKANISKI S NIU K NIWA K NOMURA M OKADA K TAJIMA H TOSHITOU T YOSHIDA S DUNLEA JM FREDERIKSEN SG KURAMATA S LUNDBERG BG OLEYNIK GA REIBEL K MORIYAMA K SHIBATA H KALBFLEISCH GR SKUBIC P SNOW JM WILLIS SE KUSUMOTO O NAKAMURA K OKUSAWA T TERANAKA M TOMINAGA T YOSHIDA T YUUKI H OKABE H YOKOTA J KAZUNO M KOYA T NIU E OGAWA S SHIBUYA H WATANABE S YASUDA N KAMIYA M SATO Y TEZUKA I YAMAKI M BAHK SY KIM SK
Citation
K. Kodama et al., UPPER LIMITS FOR CHARM HADRON DECAYS TO 2 MUONS PLUS HADRONS, Physics letters. Section B, 345(1), 1995, pp. 85-92
Citations number
26
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
345
Issue
1
Year of publication
1995
Pages
85 - 92
Database
ISI
SICI code
0370-2693(1995)345:1<85:ULFCHD>2.0.ZU;2-O
Abstract
A search for charm hadron decays into two muons plus one or more hadro ns has been carried out using a hybrid emulsion spectrometer. This tec hnique is sensitive to modes with missing neutrals, e.g. pi(0) mu(+)mu (-) and rho(+/-)mu(+)mu(-), as well as to constrained modes having vis ible invariant masses equal to those of charm states. No evidence for any such decays has been found, which allows upper limits at the 90% c onfidence level as low as 1.8 x 10(-4) to be placed on the branching f ractions for charm-changing neutral-current and lepton-number violatin g decay modes.