OBSERVATION OF AN EXCITED-STATE OF THE LAMBDA(+)(C) BARYON

Authors
FRABETTI PL CHEUNG HWK CUMALAT JP DALLAPICCOLA C GINKEL JF GREENE SV JOHNS WE NEHRING MS BUTLER JN CIHANGIR S GAINES I GARBINCIUS PH GARREN L GOURLAY SA HARDING DJ KASPER P KREYMER A LEBRUN P SHUKLA S BIANCO S FABBRI FL SARWAR S ZALLO A CULBERTSON R GARDNER RW GREENE R WISS J ALIMONTI G BELLINI G CACCIANIGA B CINQUINI L DICORATO M GIAMMARCHI M INZANI P LEVERARO F MALVEZZI S MENASCE D MERONI E MORONI L PEDRINI D PERASSO L SALA A SALA S TORRETTA D VITTONE M BUCHHOLZ D CLAES D GOBBI B OREILLY B BISHOP JM CASON NM KENNEDY CJ KIM GN LIN TF PUSELJIC DL RUCHTI RC SHEPHARD WD SWIATEK JA WU ZY ARENA V BOCA G CASTOLDI C GIANINI G RATTI SP RICCARDI C VITULO P LOPEZ A GRIM GP PAOLONE VS YAGER PM WILSON JR SHELDON PD DAVENPORT F FILASETTA JF BLACKETT GR PISHARODY M HANDLER T CHEON BG KANG JS KIM KY
Citation
Pl. Frabetti et al., OBSERVATION OF AN EXCITED-STATE OF THE LAMBDA(+)(C) BARYON, Physical review letters, 72(7), 1994, pp. 961-964
Citations number
9
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
72
Issue
7
Year of publication
1994
Pages
961 - 964
Database
ISI
SICI code
0031-9007(1994)72:7<961:OOAEOT>2.0.ZU;2-T
Abstract
An observation of an excited Lambda(c)(+) baryon decaying to Lambda(c )(+)pi(+)pi(-), with Lambda(c)(+) --> pK(-)pi(+), is presented. We rec onstruct 39.7+/-8.7 Lambda(c)(+) baryons with a mass of 340.4+/-0.6+/ -0.3 MeV/c(2) above the Lambda(c)(+) mass. The upper limit on the reso nant branching ratio is B(Lambda(c)(+) --> Sigma(c) pi(+/-))/B(Lambda (c)(+) --> Lambda(c)(+)pi(+)pi(-)) < 36% at the 90% confidence level.