MEASUREMENT OF RELATIVE BRANCHING RATIOS FOR DECAYS OF LAMBDA(C)(- CHARMED PARTICLES() AND D)

Authors
ALEEV AN BALANDIN VP GESHKOV IM GRIGALASHVILI TS ZINCHENKO AI EVSIKOV II IVANCHENKO IM KALININ AM KAMBURYAN AF KAPISHIN MN KARPENKO NN KVIRIKASHVILI GA KEKELIDZE VD KIRILLOV DA KOSAREV IG KUZMIN NA LYUBIMOV AL MOROZOV AN MOISENZ PV ODISHVILI AK PALCHIK VV POSE AV POTREBENIKOV YK PROGULOVA TB PROKES A SLEPETS LA SASHIN VA SPASKOV VN TATISHVILI GT CHVYROV AS ARALBAEVA GA LOKTIONOV AA BELOV MV DEVITSYN EG ZAVERTYAEV MV KOZLOV VA POTASHOV SY CHUDAKOV EA CHOLAKOV VD VETSKO M HLADKY J NOVAK M SMIZANSKA M ZAYACHKY VI BURILKOV DT MARKOV PK TODOROV PT TRAYANOV RK AMAGLOBELI NS ABESALASHVILI LN KVATADZE RA KOPADZE MV LOMIDZE NL MOSIDZE MD NIKOBADZE GI PITSKHELAURI TG CHARGEISHVILI MS SHANIDZE RG
Citation
An. Aleev et al., MEASUREMENT OF RELATIVE BRANCHING RATIOS FOR DECAYS OF LAMBDA(C)(- CHARMED PARTICLES() AND D), Physics of atomic nuclei, 57(8), 1994, pp. 1370-1375
Citations number
13
Categorie Soggetti
Physics, Nuclear","Physics, Particles & Fields
Journal title
Physics of atomic nuclei → ACNP
ISSN journal
10637788
Volume
57
Issue
8
Year of publication
1994
Pages
1370 - 1375
Database
ISI
SICI code
1063-7788(1994)57:8<1370:MORBRF>2.0.ZU;2-3
Abstract
The production of charmed LAMBDA(c)+ baryons and D- mesons was observe d in neutron-nucleus interactions at neutron beam momenta of 40 - 70 G eV/c. In both cases, two decay modes were detected, namely, LAMBDA(c) --> K(S)0ppi+pi- (59 +/- 13.4 events) and LAMBDA(c)+ --> K-(892)ppi 17 +/- 5.4 events) for LAMBDA(c)+ baryons and D- --> K(S)0/pi+pi- pi- (52 +/- 11.4 events) and D- --> K+(892)pi-pi- (14 +/- 4.5 events) for D- mesons. The relative branching ratios [GAMMA(LAMBDA(c)+ --> K-(89 2)ppi+ --> K(S)0ppi+pi-)]/[GAMMA(LAMBDA(c)+ --> K(S)0ppi+pi-)] = 0.29 +/- 0.09 and [GAMMA(D- --> K+(892)pi- pi- --> K(S)0pi+pi-pi-)]/[GAMMA (D- --> K(S)0pi+pi-pi-)] = 0.27 +/- 0.09 K(S)0pi+pi-pi-)] = 0.27 +/- 0 .09 were determined for these decays. The experiment was carried out u sing the BIS-2 spectrometer on the Serpukhov accelerator.