Observation of double c(c)over-bar production in e+e- annihilation at √s≈10.6 GeV -: art. no. 142001

被引：21

作者：

Abe, K ^{[1
]}

Abe, R

Abe, T

Adachi, I

Ahn, BS

Aihara, H

Akatsu, M

Asano, Y

Aso, T

Aulchenko, V

Aushev, T

Bakich, AM

Ban, Y

Banas, E

Bartel, W

Bay, A

Behera, PK

Bondar, A

Bozek, A

Bracko, M

Brodzicka, J

Browder, TE

Casey, BCK

Chang, P

Chao, Y

Cheon, BG

Chistov, R

Choi, SK

Choi, Y

Danilov, M

Dong, LY

Dragic, J

Drutskoy, A

Eidelman, S

Eiges, V

Enari, Y

Fukunaga, C

Gabyshev, N

Garmash, A

Gershon, T

Gordon, A

Guo, R

Handa, F

Hara, T

Harada, Y

Hastings, NC

Hayashii, H

Hazumi, M

Heenan, EM

机构：

[1] High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan

[2] Aomori Univ, Aomori, Japan

[3] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[4] Chiba Univ, Chiba, Japan

[5] Chuo Univ, Tokyo 112, Japan

[6] Univ Cincinnati, Cincinnati, OH 45221 USA

[7] DESY, Hamburg, Germany

[8] Univ Frankfurt, D-6000 Frankfurt, Germany

[9] Gyeongsang Natl Univ, Chinju, South Korea

[10] Univ Hawaii, Honolulu, HI 96822 USA

[11] Hiroshima Inst Technol, Hiroshima, Japan

[12] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[13] Inst High Energy Phys, Vienna, Austria

[14] Inst Theoret & Expt Phys, Moscow 117259, Russia

[15] Jozef Stefan Inst, Ljubljana, Slovenia

[16] Kanagawa Univ, Yokohama, Kanagawa, Japan

[17] Korea Univ, Seoul 136701, South Korea

[18] Kyoto Univ, Kyoto, Japan

[19] Kyungpook Natl Univ, Taegu 702701, South Korea

[20] Univ Lausanne, Inst Phys Hautes Energies, Lausanne, Switzerland

[21] Univ Maribor, SLO-2000 Maribor, Slovenia

[22] Univ Melbourne, Parkville, Vic 3052, Australia

[23] Nagoya Univ, Nagoya, Aichi, Japan

[24] Nara Womens Univ, Nara 630, Japan

[25] Natl Kaohsiung Normal Univ, Kaohsiung, Taiwan

[26] Natl Lien Ho Inst Technol, Miao Li, Peoples R China

[27] Natl Taiwan Univ, Taipei 10764, Taiwan

[28] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[29] Nihon Dent Coll, Niigata, Japan

[30] Niigata Univ, Niigata, Japan

[31] Osaka City Univ, Osaka 558, Japan

[32] Osaka Univ, Osaka, Japan

[33] Panjab Univ, Chandigarh 160014, India

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

[35] Princeton Univ, Princeton, NJ 08545 USA

[36] RIKEN BNL Res Ctr, Upton, NY 11973 USA

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

[38] Seoul Natl Univ, Seoul, South Korea

[39] Sungkyunkwan Univ, Suwon, South Korea

[40] Univ Sydney, Sydney, NSW 2006, Australia

[41] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[42] Toho Univ, Funabashi, Chiba 274, Japan

[43] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan

[44] Tohoku Univ, Sendai, Miyagi 980, Japan

[45] Univ Tokyo, Tokyo, Japan

[46] Tokyo Inst Technol, Tokyo 152, Japan

[47] Tokyo Metropolitan Univ, Tokyo 158, Japan

[48] Tokyo Univ Agr & Technol, Tokyo, Japan

[49] Toyama Natl Coll Maritime Technol, Toyama, Japan

[50] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.89.142001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of prompt J/psi via double c (c) over bar production from the e(+)e(-) continuum. In this process one c (c) over bar pair fragments into a J/psi meson while the remaining pair either produces a charmonium state or fragments into open charm. Both cases have been experimentally observed. We find cross sections of sigma[e(+)e(-)-->J/psieta(c)(gamma)]xB(eta(c)-->greater than or equal to4 charged)=(0.033(-0.006)(+0.007)+/-0.009) pb and sigma(e(+)e(-)-->J/psiD(*+)X)=(0.53(-0.15)(+0.19)+/-0.14) pb and infer sigma(e(+)e(-)-->J/psic (c) over bar)/sigma(e(+)e(-)-->J/psiX)=0.59(-0.13)(+0.15)+/-0.12. These results are obtained from a 46.2 fb(-1) data sample collected near the Y(4S) resonance, with the Belle detector at the KEKB collider.

引用

页码：1 / 142001

页数：6

共 19 条

[1] The Belle detector
Abashian, A
Abe, K
Abe, R
Abe, K
Adachi, I
Ahn, BS
Ahn, HS
Aihara, H
Akatsu, M
Akhmetshin, R
Alexander, JP
Alimonti, G
An, Q
Aoki, K
Asai, M
Asano, Y
Aso, T
Aulchenko, V
Bakich, AM
Banas, E
Behari, S
Behera, PK
Beiline, D
Bondar, A
Bozek, A
Browder, TE
Casey, BCK
Chang, P
Chang, YH
Chao, Y
Chen, HS
Chen, HF
Chen, YQ
Cheon, BG
Chidzik, S
Choi, S
Choi, Y
Dneprovsky, L
Doi, Y
Dong, LY
Dragic, J
Drutskoy, A
Eidelman, S
Enomoto, R
Everton, CW
Fang, F
Fujii, H
Fujimoto, K
Fujita, Y
Fukunaga, C
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 479 (01) : 117 - 232
[2] Abe K, 2002, PHYS REV LETT, V88, DOI [10.1103/PhysRevLett.88.052002, 10.1103/PhysRevLett.88.181803]
[3] Measurement of J/ψ production in continuum e+e- annihilations near √s=10.6 GeV -: art. no. 162002
Aubert, B
Boutigny, D
Gaillard, JM
Hicheur, A
Karyotakis, Y
Lees, JP
Robbe, P
Tisserand, V
Palano, A
Chen, GP
Chen, JC
Qi, ND
Rong, G
Wang, P
Zhu, YS
Eigen, G
Reinertsen, PL
Stugu, B
Abbott, B
Abrams, GS
Borgland, AW
Breon, AB
Brown, DN
Button-Shafer, J
Cahn, RN
Clark, AR
Fan, Q
Gill, MS
Gritsan, A
Groysman, Y
Jacobsen, RG
Kadel, RW
Kadyk, J
Kerth, LT
Kluth, S
Kolomensky, YG
Kral, JF
LeClerc, C
Levi, ME
Liu, T
Lynch, G
Meyer, AB
Momayezi, M
Oddone, PJ
Perazzo, A
Pripstein, M
Roe, NA
Romosan, A
Ronan, MT
Shelkov, VG
[J]. PHYSICAL REVIEW LETTERS, 2001, 87 (16) : 1 - 162002
[4] BAEK S, SONGHEPPH9804455
[5] Baek SW, 1998, J KOREAN PHYS SOC, V33, P97
[6] COLOR-OCTET FRAGMENTATION AND THE PSI'-SURPLUS AT THE FERMILAB-TEVATRON
BRAATEN, E
FLEMING, S
[J]. PHYSICAL REVIEW LETTERS, 1995, 74 (17) : 3327 - 3330
[7] Signature for color-octet production of J/psi in e(+)e(-) annihilation
Braaten, E
Chen, YQ
[J]. PHYSICAL REVIEW LETTERS, 1996, 76 (05) : 730 - 733
[8] QUARKONIA AND QUANTUM CHROMODYNAMICS
BUCHMULLER, W
TYE, SHH
[J]. PHYSICAL REVIEW D, 1981, 24 (01): : 132 - 156
[9] CHARMONIUM PRODUCTION AT THE TEVATRON
CACCIARI, M
GRECO, M
MANGANO, ML
PETRELLI, A
[J]. PHYSICS LETTERS B, 1995, 356 (04) : 553 - 560
[10] Color-octet quarkonia production .2.
Cho, P
Leibovich, AK
[J]. PHYSICAL REVIEW D, 1996, 53 (11): : 6203 - 6217

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