ITA
ENG

EVIDENCE FOR LAMBDA(C)(2593)(+) PRODUCTION

Authors

ALBRECHT H HAMACHER T HOFMANN RP KIRCHHOFF T MANKEL R NAU A NOWAK S RESSING D SCHRODER H SCHULZ HD WALTER M WURTH R HAST C KAPITZA H KOLANOSKI H KOSCHE A LANGE A LINDNER A SCHIEBER M SIEGMUND T THURN H TOPFER D WEGENER D FRANKL C GRAF J SCHMIDTLER M SCHRAMM M SCHUBERT KR SCHWIERZ R SPAAN B WALDI R REIM K WEGENER H ECKMANN R KUIPERS H MAI O MUNDT R OEST T REINER R ROHDE A SCHMIDTPARZEFALL W STIEWE J WERNER S EHRET K HOFMANN W HUPPER A KNOPFLE KT SPENGLER J KRIEGER P MACFARLANE DB PRENTICE JD SAULL PRB TZAMARIUDAKI K VANDEWATER RG YOON TS SCHNEIDER M WESELER S BRACKO M KERNEL G KRIZAN P KRIZNIC E MEDIN G PODOBNIK T ZIVKO T BALAGURA V BARSUK S BELYAEV I CHISTOV R DANILOV M EIGES V GERSHTEIN L GERSHTEIN Y GOLUTVIN A IGONKINA O KOROLKO I KOSTINA G LITVINTSEV D PAKHLOV P SEMENOV S SNIZHKO A TICHOMIROV I ZAITSEV Y

Citation

H. Albrecht et al., EVIDENCE FOR LAMBDA(C)(2593)(+) PRODUCTION, Physics letters. Section B, 402(1-2), 1997, pp. 207-212

Citations number

Categorie Soggetti

Physics

Journal title

Physics letters. Section B → ACNP

ISSN journal

03702693

Volume

402

Issue

1-2

Year of publication

1997

Pages

207 - 212

Database

ISI

SICI code

0370-2693(1997)402:1-2<207:EFLP>2.0.ZU;2-B

Abstract

Using the ARGUS detector at the e(+)e(-) storage ring DORIS II at DESY , we have found evidence for the production of the excited charmed bar yon state Lambda c(2593)(+) in the channel Lambda(c)(+)pi(+)pi(-). Its mass was determined to be (2594.6 +/- 0.9 +/- 0.4) MeV/c(2), and the natural width measured to be Gamma = (2.9(-2.1-1.4)(+2.9+1.8)) MeV. Th e production cross section times thebranching ratios of sigma(e(+)e(-) --> Lambda(c)(2593)X+) x Br(Lambda(c)(2593(+)) --> Lambda(c)(+)pi(+)p i(-) ) x Br(Lambda(c)(+) --> pK(-)pi(+)) was measured to be (0.25(-0.1 3)(+0.24) +/- 0.13) pb. The fractions of Lambda(c)(2593)(+) decays pro ceeding through the Sigma(c)(0) pi(+) and Sigma(c)(++)pi(-) channels w ere determined to be 0.29 +/- 0.10 +/- 0.11 and 0.37 +/- 0.12 +/- 0.13 , respectively. (C) 1997 Published by Elsevier Science B.V.