Measurement of azimuthal asymmetries in inclusive production of hadron pairs in e+e- annihilation at Belle

被引：193

作者：

Seidl, R. ^{[1
]}

Hasuko, K.

Abe, K.

Adachi, I.

Aihara, H.

Anipko, D.

Asano, Y.

Aushev, T.

Bakich, A. M.

Balagura, V.

Barberio, E.

Bartel, W.

Bay, A.

Bitenc, U.

Bizjak, I.

Blyth, S.

Bozek, A.

Bracko, M.

Browder, T. E.

Chang, P.

Chen, A.

Cheon, B. G.

Choi, Y.

Choi, Y. K.

Chuvikov, A.

Dalseno, J.

Danilov, M.

Dash, M.

Dragic, J.

Eidelman, S.

Fratina, S.

Gabyshev, N.

Gershon, T.

Go, A.

Gokhroo, G.

Golob, B.

Gorisek, A.

Perdekamp, M. Grosse

Ha, H. C.

Hayasaka, K.

Hayashii, H.

Hazumi, M.

Hokuue, T.

Hoshi, Y.

Hou, S.

Hou, W. -S.

Iijima, T.

Inami, K.

Ishikawa, A.

Itoh, R.

机构：

[1] Princeton Univ, Upton, NY 11973 USA

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

[3] Chiba Univ, Chiba, Japan

[4] Chonnam Natl Univ, Kwangju 500757, South Korea

[5] Univ Cincinnati, Cincinnati, OH 45221 USA

[6] Deutsch Electronen Synchrotron, Hamburg, Germany

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

[8] Univ Hawaii, Honolulu, HI 96822 USA

[9] Natl Lab High Energy Phys, KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, 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 136701, South Korea

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

[18] Swiss Fed Inst Technol, EPFL, CH-1015 Lausanne, Switzerland

[19] Univ Ljubljana, Ljubljana, Slovenia

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

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

[22] Nagoya Univ, Nagoya, Aichi, 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 10764, Taiwan

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

[28] Nippon Dent Univ, Niigata, Japan

[29] Niigata Univ, Niigata, Japan

[30] Nova Gorica Polytech, Nova Gorica, Italy

[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] Brookhaven Natl Lab, Res Ctr, RIKEN, Upton, NY 11973 USA

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

[37] Seoul Natl Univ, Seoul, South Korea

[38] Shinshu Univ, Nagano, Japan

[39] Sungkyunkwan Univ, Suwon 440746, 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 985, Japan

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

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

[46] Tokyo Inst Technol, Tokyo 152, Japan

[47] Tokyo Metropolitan Univ, Tokyo 158, Japan

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

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

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

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.96.232002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Collins effect connects transverse quark spin with a measurable azimuthal dependence in the yield of hadronic fragments around the quark's momentum vector. Using two different reconstruction methods, we find evidence of statistically significant azimuthal asymmetries for charged pion pairs in e(+)e(-) annihilation at a center-of-mass energy of 10.52 GeV, which can be attributed to a transverse polarization of the primordial quarks. The measurement was performed using a sample of 79x10(6) hadronic events collected with the Belle detector.

引用

页数：6

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