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

被引：25

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 [J].

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 .

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 [J].

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 .

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 [J].

BRAATEN, E ;

FLEMING, S .

PHYSICAL REVIEW LETTERS, 1995, 74 (17) :3327-3330

[7] Signature for color-octet production of J/psi in e(+)e(-) annihilation [J].

Braaten, E ;

Chen, YQ .

PHYSICAL REVIEW LETTERS, 1996, 76 (05) :730-733

[8] QUARKONIA AND QUANTUM CHROMODYNAMICS [J].

BUCHMULLER, W ;

TYE, SHH .

PHYSICAL REVIEW D, 1981, 24 (01) :132-156

[9] CHARMONIUM PRODUCTION AT THE TEVATRON [J].

CACCIARI, M ;

GRECO, M ;

MANGANO, ML ;

PETRELLI, A .

PHYSICS LETTERS B, 1995, 356 (04) :553-560

[10] Color-octet quarkonia production .2. [J].

Cho, P ;

Leibovich, AK .

PHYSICAL REVIEW D, 1996, 53 (11) :6203-6217

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