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

Journal Article · Thu Oct 01 00:00:00 EDT 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.81.3091· OSTI ID:326852

Bai, J Z; Bian, J G; Chai, Z W; Chen, G P; Chen, J C; Chen, Y; Chen, Y B; Chen, Y Q; Cheng, B S; Cui, X Z; Ding, H L; Ding, L Y; Dong, L Y; Du, Z Z; Feng, S; Gao, C S; Gao, M L; Gao, S Q; Gu, J H; Gu, S D ; Gu, W X; Gu, Y F; Guo, Y N; Han, S W; Han, Y; He, J; He, J T; Hu, G Y; Hu, H M; Hu, J L; Hu, Q H; Hu, T; Hu, X Q; Huang, J D; Huang, Y Z; Jiang, C H; Jin, Y; Ke, Z J; Lai, Y F; Lang, P F; Li, C G; Li, D; Li, H B; Li, J; Li, P Q; Li, R B; Li, W; Li, W D; Li, W G; Li, X H; Li, X N; Liu, H M; Liu, J; Liu, J H; Liu, R G; Liu, Y; Lu, F; Lu, J G; Lu, J Y; Lu, L C; Luo, C H; Ma, A M; Ma, E C; Ma, J M; Mao, H S; Mao, Z P; Meng, X C; Nie, J; Qi, N D; Qi, X R; Qiu, J F; Qu, Y H; Que, Y K; Rong, G; Shao, Y Y; Shen, B W; Shen, D L; Shen, H; Shen, X Y; Sheng, H Y; Shi, H Z; Song, X F; Sun, F; Sun, H S; Tang, S Q; Tong, G L; Wang, F; Wang, L S; Wang, L Z; Wang, M; Wang, M; Wang, P; Wang, P L; Wang, S M; Wang, T J; Wang, Y Y; Wei, C L; Wu, Y G; Xi, D M; Xia, X M; Xie, P P; Xie, Y; Xie, Y H; Xiong, W J; Xu, C C; Xu, G F; Xue, S T; Yan, J; Yan, W G; Yang, C M; Yang, C Y; Yang, J; Yang, X F; Ye, M H; Yi, K; Yu, C S; Yu, C X; Yu, Z Q; Yu, Z T; Yuan, C Z; Yuan, Y; Zhang, B Y; Zhang, C C; Zhang, D H; Zhang, D; Zhang, H L; Zhang, J; Zhang, J L; Zhang, J W; Zhang, L S; Zhang, Q J; Zhang, S Q; Zhang, Y; Zhang, Y Y; Zhao, D X; Zhao, H W; Zhao, J W; Zhao, M; Zhao, W R; Zhao, Z G; Zheng, J P; Zheng, L S; Zheng, Z P; Zhou, G P; Zhou, H S; Zhou, L; Zhu, Q M; Zhu, Y C; Zhu, Y S; Zhuang, B A ^[1]; Hitlin, D G; Kelsey, M H; Oyang, J; Panetta, J; Porter, F; Weaver, M ^[2]; Chen, J; Malchow, R; Toki, W; Yang, W ^[3]

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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)

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: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• DOE Contract Number: AC03-76SF00515; FG03-91ER40679; FG03-92ER40701; FG03-93ER40788; FG03-94ER40833; FG03-95ER40925
• OSTI ID: 326852
• Journal Information: Physical Review Letters, Vol. 81, Issue 15; Other Information: PBD: Oct 1998
• Country of Publication: United States
• Language: English

Related Subjects

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