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Study of the {ital P }-Wave Charmonium State {ital {chi}}{sub {ital cJ}} in {ital {psi}}(2{ital S}) Decays

Journal Article · · Physical Review Letters
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1]; ; ; ; ; ;  [2]; ; ; ;  [3] « less
  1. Institute of High Energy Physics, Beijing 100039, People`s Republic of (China)
  2. California Institute of Technology, Pasadena, California 91125 (United States)
  3. Colorado State University, Fort Collins, Colorado 80523 (United States)
+ Show Author Affiliations
The processes {psi}(2S){r_arrow}{gamma}{pi}{sup +}{pi}{sup {minus}} , {gamma}K{sup +}K{sup {minus}} , and {gamma}p{ovr p} have been studied using a sample of 3.79{times}10{sup 6} {psi}(2S) decays. We determine the total width of the {chi}{sub c0} to be {Gamma}{sup tot}{sub {chi}{sub c0}} =14.3{plus_minus}2.0{plus_minus}3.0 MeV . We present the first measurement of the branching fraction B({chi}{sub c0}{r_arrow}p{ovr p})=( 15.9{plus_minus}4.3{plus_minus}5.3){times}10{sup {minus}5} , where the first error is statistical and the second one is systematic. Branching fractions of {chi}{sub c0,2}{r_arrow}{pi}{sup +}{pi}{sup {minus}} and K{sup +}K{sup {minus}} are also reported. {copyright} {ital 1998} {ital The American Physical Society }
Research Organization:
Stanford Linear Accelerator Center
DOE Contract Number:
AC03-76SF00515; FG03-91ER40679; FG03-92ER40701; FG03-93ER40788; FG03-94ER40833; FG03-95ER40925
OSTI ID:
326852
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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Related Subjects

66 PHYSICS
ANTIPROTONS
BRANCHING RATIO
CHARM PARTICLES
CHARMONIUM
KAONS MINUS
KAONS PLUS
MASS
MUONS MINUS
MUONS PLUS
PARTICLE DECAY
PROTONS
QUARK MODEL