First evidence of Λ(Λ)over-bar in χcJ decays -: art. no. 112001

被引：21

作者：

Bai, JZ

Ban, Y

Bian, JG

Cai, X

Chang, JF

Chen, HF

Chen, HS

Chen, J

Chen, JC

Chen, YB

Chi, SP

Chu, YP

Cui, XZ

Dai, YM

Dai, YS

Dong, LY

Du, SX

Du, ZZ

Fang, J

Fang, SS

Fu, CD

Fu, HY

Fu, LP

Gao, CS

Gao, ML

Gao, YN

Gong, MY

Gong, WX

Gu, SD

Guo, YN

Guo, YQ

Guo, ZJ

Han, SW

Harris, FA

He, J

He, KL

He, M

He, X

Heng, YK

Hong, T

Hu, HM

Hu, T

Huang, GS

Huang, L

Huang, XP

Ji, XB

Jiang, CH

Jiang, XS

Jin, DP

Jin, S

机构：

[1] Inst High Energy Phys, Beijing 100039, Peoples R China

[2] China Ctr Adv Sci & Technol, Beijing 100080, Peoples R China

[3] Henan Normal Univ, Xinxiang 453002, Peoples R China

[4] Huazhong Normal Univ, Wuhan 430079, Peoples R China

[5] Hunan Univ, Changsha 410082, Peoples R China

[6] Liaoning Univ, Shenyang 110036, Peoples R China

[7] Nankai Univ, Tianjin 300071, Peoples R China

[8] Peking Univ, Beijing 100871, Peoples R China

[9] Shandong Univ, Jinan 250100, Peoples R China

[10] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China

[11] Sichuan Univ, Chengdu 610064, Peoples R China

[12] Tsinghua Univ, Beijing 100084, Peoples R China

[13] Univ Hawaii, Honolulu, HI 96822 USA

[14] Univ Sci & Technol China, Hefei 230026, Peoples R China

[15] Wuhan Univ, Wuhan 430072, Peoples R China

[16] Zhejiang Univ, Hangzhou 310028, Peoples R China

来源：

PHYSICAL REVIEW D | 2003年 / 67卷 / 11期

关键词：

CHI(C0)(1(3)P(0)) STATE; RESONANCE PARAMETERS; CHARMONIUM; ANNIHILATION; OCTET;

D O I：

10.1103/PhysRevD.67.112001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The first observation of chi(cJ) (J=0,1,2) decays to Lambda(Lambda) over bar is reported using psi(2S) data collected with the Beijing Spectrometer detector at the Beijing Electron Positron Collider. The branching ratios are determined to be B(chi(c0)-->Lambda(Lambda) over bar)=(4.7(-1.2)(+1.3)+/-1.0)x10(-4), B(chi(c1)-->Lambda(Lambda) over bar)=(2.6(-0.9)(+1.0)+/-0.6)x10(-4) and B(chi(c2)-->Lambda(Lambda) over bar)=(3.3(-1.3)(+1.5)+/-0.7)x10(-4). The results are compared with model predictions.

引用

页数：8

共 13 条

[1] Study of the χc0(13P0) state of charmonium formed in (p)over-barp annihilations
Ambrogiani, M
Argirò, S
Bagnasco, S
Baldini, W
Bettoni, D
Borreani, G
Buzzo, A
Calabrese, R
Cester, R
Dalpiaz, P
Fan, X
Garzoglio, G
Gollwitzer, KE
Hahn, A
Jin, S
Kasper, J
Lasio, G
Lo Vetere, M
Luppi, E
Maas, P
Macrì, M
Mandelkern, M
Marchetto, F
Marinelli, M
Marsh, W
Martini, M
Menichetti, E
Mussa, R
Obertino, MM
Pallavicini, M
Pastrone, N
Patrignani, C
Pedlar, TK
Peoples, J
Pordes, S
Robutti, E
Rosen, J
Rumerio, P
Santroni, A
Savriè, M
Schultz, J
Seth, KK
Stancari, G
Stancari, M
Streets, J
Tomaradze, A
Werkema, S
Zioulas, G
[J]. PHYSICAL REVIEW LETTERS, 1999, 83 (15) : 2902 - 2905
[2] New measurements of the resonance parameters of the χc0(13P0) state of charmonium
Bagnasco, S
Baldini, W
Bettoni, D
Borreani, G
Buzzo, A
Calabrese, R
Cester, R
Cibinetto, G
Dalpiaz, P
Garzoglio, G
Gollwitzer, K
Graham, M
Hu, M
Joffe, D
Kasper, J
Lasio, G
LoVetere, M
Luppi, E
Macrì, M
Mandelkern, M
Marchetto, F
Marinelli, M
Menichetti, E
Metreveli, Z
Mussa, R
Negrini, M
Obertino, M
Pallavicini, M
Pastrone, N
Patrignani, C
Pordes, S
Robutti, E
Roethel, W
Rosen, J
Rumerio, P
Rusack, R
Santroni, A
Schultz, J
Seo, SH
Seth, KK
Stancari, G
Stancari, M
Tomaradze, A
Vidnovic, T
Werkema, S
Zweber, P
[J]. PHYSICS LETTERS B, 2002, 533 (3-4) : 237 - 242
[3] THE BES DETECTOR
BAI, JZ
BIAN, Q
CHEN, GM
CHEN, LJ
CHEN, SN
CHEN, YQ
CHEN, ZQ
CHI, YK
CUI, HC
CUI, XZ
DENG, SS
DENG, YW
DING, HL
DONG, BZ
DONG, XS
DU, X
DU, ZZ
FENG, C
FENG, Z
FU, ZS
GAO, CS
GAO, ML
GAO, SQ
GAO, WX
GAO, YN
GU, SD
GU, WX
GUAN, YZ
GUO, HF
GUO, YN
GUO, YY
HAN, SW
HAN, Y
HAO, W
HE, J
HE, KR
HE, MJ
HOU, XJ
HU, GY
HU, JS
HU, JW
HUANG, DQ
HUANG, YZ
JIA, QP
JIANG, CH
JU, Q
LAI, YF
LANG, PF
LI, DS
LI, F
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1994, 344 (02) : 319 - 334
[4] A measurement of ψ (2S) resonance parameters
Bai, JZ
Ban, Y
Bian, JG
Blum, I
Cai, X
Chang, JF
Chen, HF
Chen, HS
Chen, J
Chen, J
Chen, JC
Chen, YB
Chi, SP
Chu, YP
Cui, XZ
Dai, YS
Dong, LY
Du, ZZ
Dunwoodie, W
Fang, J
Fang, SS
Fu, HY
Fu, LP
Gao, CS
Gao, YN
Gong, MY
Gratton, P
Gu, SD
Guo, YN
Guo, YQ
Guo, ZJ
Han, SW
Harris, FA
He, J
He, KL
He, M
He, X
Heng, YK
Hong, T
Hu, HM
Hu, T
Huang, GS
Huang, XP
Izen, JM
Ji, XB
Jiang, CH
Jiang, XS
Jin, DP
Jin, S
Jin, Y
[J]. PHYSICS LETTERS B, 2002, 550 (1-2) : 24 - 32
[5] The BES upgrade
Bai, JZ
Bao, HC
Blum, I
Chai, ZW
Chen, GP
Chen, HF
Chen, J
Chen, JC
Chen, Y
Chen, YB
Chen, YQ
Cheng, BS
Chu, XM
Cui, XZ
Ding, HL
Ding, WY
Dong, LY
Du, YY
Du, ZZ
Dunwoodie, W
Fang, J
Fang, WZ
Gao, CS
Gao, ML
Gao, SQ
Gratton, P
Gu, JH
Gu, SD
Gu, WX
Guo, YN
Han, HG
Han, SW
Harris, FA
Han, Y
He, J
He, M
Heng, YK
Hitlin, DG
Hu, GY
Hu, HB
Hu, HM
Hu, JL
Hu, QH
Hu, T
Hu, XQ
Huang, GS
Huang, JD
Huang, YZ
Izen, JM
Jiang, CH
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2001, 458 (03) : 627 - 637
[6] Bai JZ, 1999, PHYS REV D, V60, DOI 10.1103/PhysRevD.60.072001
[7] Study of the P-wave charmonium state χcJ in ψ/(2S) decays
Bai, JZ
Bian, JG
Blum, I
Chai, ZW
Chen, GP
Chen, HF
Chen, J
Chen, JC
Chen, Y
Chen, YB
Chen, YQ
Cheng, BS
Cui, XZ
Ding, HL
Ding, LY
Dong, LY
Du, ZZ
Dunwoodie, W
Feng, S
Gao, CS
Cao, ML
Gao, SQ
Gratton, P
Gu, JH
Gu, SD
Gu, WX
Gu, YF
Guo, YN
Han, SW
Han, Y
Harris, FA
He, J
He, JT
He, M
Hitlin, DG
Hu, GY
Hu, HM
Hu, JL
Hu, QH
Hu, T
Hu, XQ
Huang, JD
Huang, YZ
Izen, JM
Jiang, CH
Jin, Y
Ke, ZJ
Kelsey, MH
Kim, BK
Kong, D
[J]. PHYSICAL REVIEW LETTERS, 1998, 81 (15) : 3091 - 3095
[8] BAI JZ, 1988, PHYS REV D, V58
[9] RIGOROUS QCD ANALYSIS OF INCLUSIVE ANNIHILATION AND PRODUCTION OF HEAVY QUARKONIUM
BODWIN, GT
BRAATEN, E
LEPAGE, GP
[J]. PHYSICAL REVIEW D, 1995, 51 (03): : 1125 - 1171
[10] Colour-octet contributions to exclusive charmonium decays
Bolz, J
Kroll, P
Schuler, GA
[J]. PHYSICS LETTERS B, 1997, 392 (1-2) : 198 - 206

← 1 2 →