ITA
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STUDY OF HIGHER MASS CHARM BARYONS DECAYING TO LAMBDA(+)(C)

Authors

FRABETTI PL CHEUNG HWK CUMALAT JP DALLAPICCOLA C GINKEL JF 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 VITTONE M BIANCO S FABBRI FL SARWAR S ZALLO A CULBERTSON R GARDNER RW GREENE R WISS J ALIMONTI G BELLINI G BOSCHINI M BRAMBILLA D CACCIANIGA B CINQUINI L DICORATO M GIAMMARCHI M INZANI P LEVERARO F MALVEZZI S MENASCE D MERONI E MORONI L PEDRINI D PERASSO L PRELZ F SALA A SALA S TORRETTA D 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 VIOLA L VITULO P LOPEZ A GRIM GP PAOLONE VS YAGER PM WILSON JR SHELDON PD DAVENPORT F BLACKETT GR DANYO K PISHARODY M HANDLER T CHEON BG KANG JS KIM KY

Citation

Pl. Frabetti et al., STUDY OF HIGHER MASS CHARM BARYONS DECAYING TO LAMBDA(+)(C), Physics letters. Section B, 365(1-4), 1996, pp. 461-469

Citations number

Categorie Soggetti

Physics

Journal title

Physics letters. Section B → ACNP

ISSN journal

03702693

Volume

365

Issue

1-4

Year of publication

1996

Pages

461 - 469

Database

ISI

SICI code

0370-2693(1996)365:1-4<461:SOHMCB>2.0.ZU;2-E

Abstract

We report on the study of charm baryons decaying to Lambda(c)(+):Lambd a(c)(+) (2625) --> Lambda(c)(+)pi(+)pi(-), Lambda(c)*(+) (2593) --> L ambda(c)(+)pi(+)pi(-), Sigma(c)(0) --> Lambda(c)(+)pi(-) and Sigma(c)( ++) --> Lambda(c)(+)pi(+). We present a confirmation of the state Lamb da(c)(+) (2593) and determine its mass difference to be M(Lambda(c)*( +) (2593)) - M(Lambda(c)(+)) = 309.2 +/- 0.7 +/- 0.3 MeV/c(2). We dete rmine the lower limit on the resonant branching ratio to be BR(Lambda( c)(+) (2593) --> Sigma(c) pi(+/-)/Lambda(c)*(+) (2593) --> Lambda(c)( +)pi(+)pi(-)) > 0.51 (90% c.l.). We also measure the mass differences M(Sigma(c)(0)) - M(Lambda(c)(+)) = 166.6 +/- 0.5 +/- 0.6 MeV/c(2) and M(Sigma(c)(++)) - M(Lambda(c)(+)) = 167.6 +/- 0.6 +/- 0.6 MeV/c(2). Fi nally, we measure the relative photoproduction cross sections for Lamb da(c)(+) and Sigma(c) with respect to the (inclusive) photoproduction cross section for Lambda(c)(+).