Measurement of the e+e-→J/ψc<overline>c</overline> cross section at <radical><radicand>s</radicand></radical>≈10.6 GeV

被引：59

作者：

Pakhlov, P. ^{[13
]}

Aihara, H. ^{[43
]}

Arinstein, K. ^{[31
,50
]}

Aushev, T. ^{[13
,18
]}

Bakich, A. M. ^{[38
]}

Balagura, V. ^{[13
]}

Barberio, E. ^{[21
]}

Bay, A. ^{[18
]}

Belous, K. ^{[12
]}

Bhardwaj, V. ^{[33
]}

Bondar, A. ^{[31
,50
]}

Bracko, M. ^{[14
,20
]}

Brodzicka, J. ^{[8
]}

Browder, T. E. ^{[7
]}

Chang, M. -C. ^{[4
]}

Chang, P. ^{[26
]}

Chen, A. ^{[24
]}

Cheon, B. G. ^{[6
]}

Chistov, R. ^{[13
]}

Choi, S. -K. ^{[49
]}

Choi, Y. ^{[37
]}

Danilov, M. ^{[13
]}

Dash, M. ^{[47
]}

Drutskoy, A. ^{[2
]}

Dungel, W. ^{[11
]}

Eidelman, S. ^{[31
,50
]}

Epifanov, D. ^{[31
,50
]}

Gabyshev, N. ^{[31
,50
]}

Goldenzweig, P. ^{[2
]}

Golob, B. ^{[14
,19
]}

Ha, H. ^{[16
]}

Han, B. -Y. ^{[16
]}

Hayasaka, K. ^{[22
]}

Hayashii, H. ^{[23
]}

Hazumi, M. ^{[8
]}

Horii, Y. ^{[42
]}

Hoshi, Y. ^{[41
]}

Hou, W. -S. ^{[26
]}

Hsiung, Y. B. ^{[26
]}

Hyun, H. J. ^{[17
]}

Iijima, T. ^{[22
]}

Inami, K. ^{[22
]}

Ishikawa, A. ^{[34
]}

Ishino, H. ^{[44
]}

Iwasaki, Y. ^{[8
]}

Joshi, N. J. ^{[39
]}

Kah, D. H. ^{[17
]}

Kaji, H. ^{[22
]}

Kawai, H. ^{[1
]}

Kawasai, T. ^{[29
]}

机构：

[1] Chiba Univ, Chiba, Japan

[2] Univ Cincinnati, Cincinnati, OH 45221 USA

[3] T Kosciuszko Cracow Univ Technol, Krakow, Poland

[4] Fu Jen Catholic Univ, Dept Phys, Taipei, Taiwan

[5] Univ Giessen, Giessen, Germany

[6] Hanyang Univ, Seoul 133791, South Korea

[7] Univ Hawaii, Honolulu, HI 96822 USA

[8] High Energy Accelerator Res Organizat KEK, Tsukuba, Ibaraki, Japan

[9] Hiroshima Inst Technol, Hiroshima, Japan

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

[11] Inst High Energy Phys, Vienna, Austria

[12] Inst High Energy Phys, Protvino, Russia

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

[14] Jozef Stefan Inst, Ljubljana, Slovenia

[15] Kanagawa Univ, Yokohama, Kanagawa, Japan

[16] Korea Univ, Seoul, South Korea

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

[18] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

[19] Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia

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

[21] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia

[22] Nagoya Univ, Nagoya, Aichi 4648601, Japan

[23] Nara Womens Univ, Nara 630, Japan

[24] Natl Cent Univ, Chungli 32054, Taiwan

[25] Natl United Univ, Miaoli, Taiwan

[26] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan

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

[28] Nippon Dent Univ, Niigata, Japan

[29] Niigata Univ, Niigata, Japan

[30] Univ Nova Gorica, Nova Gorica, Slovenia

[31] Novosibirsk State Univ, Novosibirsk 630090, Russia

[32] Osaka City Univ, Osaka 558, Japan

[33] Panjab Univ, Chandigarh 160014, India

[34] Saga Univ, Saga 840, Japan

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

[36] Seoul Natl Univ, Seoul, South Korea

[37] Sungkyunkwan Univ, Suwon, South Korea

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

[39] Tata Inst Fundamental Res, Mumbai 400005, Maharashtra, India

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

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

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

[43] Univ Tokyo, Dept Phys, Tokyo 113, Japan

[44] Tokyo Inst Technol, Tokyo 152, Japan

[45] Tokyo Metropolitan Univ, Tokyo 158, Japan

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

[47] Virginia Polytech Inst & State Univ, IPNAS, Blacksburg, VA 24061 USA

[48] Yonsei Univ, Seoul 120749, South Korea

[49] Gyeongsang Natl Univ, Chinju, South Korea

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

来源：

PHYSICAL REVIEW D | 2009年 / 79卷 / 07期

关键词：

J/PSI PRODUCTION; E(+)E(-);

D O I：

10.1103/PhysRevD.79.071101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new measurement of the e(+)e(-)-> J/psi c(c)over bar cross section where the c(c)over bar pair can fragment either into charmed hadrons or a charmonium state. In the former case the J/psi and a charmed hadron are reconstructed, while the latter process is measured using the recoil mass technique, which allows the identification of two-body final states without reconstruction of one of the charmonia. The measured e(+)e(-)-> J/psi c(c)over bar cross section is (0.74 +/- 0.08(-0.08)(+0.09)) pb, and the e(+)e(-)-> J/psi Xnon-c(c)over bar cross section is (0.43 +/- 0.09 +/- 0.09) pb. We note that the measured cross sections are obtained from a data sample with the multiplicity of charged tracks in the event larger than 4; corrections for the effect of this requirement are not performed as this cannot be done in a model-independent way. The analysis is based on a data sample with an integrated luminosity of 673 fb(-1) recorded near the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) asymmetric-energy collider.

引用

页数：7

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