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Observation of a Near-Threshold Enhancement in the e(+) e(-)-> Lambda(+)(c) Lambda(-)(c) Cross Section Using Initial-State Radiation
Pakhlova, G; Adachi, I; Aihara, H; Arinstein, K; Aulchenko, V; Aushev, T; Bakich, AM; Balagura, V; Bedny, I; Bhardwaj, V; Bitenc, U; Bondar, A; Bozek, A; Bracko, M; Brodzicka, J; Browder, TE; Chang, P; Chen, A; Cheon, BG; Chiang, CC; Chistov, R; Cho, IS; Choi, SK; Choi, Y; Dalseno, J; Danilov, M; Dash, M; Eidelman, S; Gabyshev, N; Ha, H; Haba, J; Hayasaka, K; Hazumi, M; Heffernan, D; Hoshi, Y; Hou, WS; Hsiung, YB; Hyun, HJ; Iijima, T; Inami, K; Ishikawa, A; Ishino, H; Itoh, R; Iwasaki, M; Iwasaki, Y; Kah, DH; Kang, JH; Katayama, N; Kawai, H; Kawasaki, T; Kichimi, H; Kim, HJ; Kim, HO; Kim, SK; Kim, YI; Kim, YJ; Kinoshita, K; Krizan, P; Krokovny, P; Kumar, R; Kuzmin, A; Kwon, YJ; Kyeong, SH; Lange, JS; Lee, JS; Lee, SE; Lesiak, T; Li, J; Limosani, A; Liu, C; Liventsev, D; Mandl, F; Matyja, A; Miyabayashi, K; Miyata, H; Miyazaki, Y; Mizuk, R; Mori, T; Nakano, E; Nakao, M; Natkaniec, Z; Nishida, S; Nitoh, O; Noguchi, S; Ogawa, S; Ohshima, T; Okuno, S; Olsen, SL; Ozaki, H; Pakhlov, P; Palka, H; Park, CW; Park, H; Park, HK; Peak, LS; Piilonen, LE; Poluektov, A; Sahoo, H; Sakai, Y; Schneider, O; Senyo, K; Shapkin, M; Shen, CP; Shiu, JG; Shwartz, B; Singh, JB; Sokolov, A; Stanic, S; Staric, M; Sumiyoshi, T; Tanaka, M; Taylor, GN; Teramoto, Y; Tikhomirov, I; Uehara, S; Uglov, T; Unno, Y; Uno, S; Urquijo, P; Usov, Y; Varner, G; Wang, CH; Wang, MZ; Wang, P; Wang, XL; Watanabe, Y; Wedd, R; Won, E; Yabsley, BD; Yamashita, Y; Yamauchi, M; Yuan, CZ; Zhang, CC; Zhang, ZP; Zhilich, V; Zhulanov, V; Zivko, T; Zupanc, A; Zyukova, O
2008
发表期刊PHYSICAL REVIEW LETTERS
卷号101期号:17页码:172001
通讯作者[Arinstein, K. ; Aulchenko, V. ; Bedny, I. ; Bondar, A. ; Eidelman, S. ; Gabyshev, N. ; Kuzmin, A. ; Poluektov, A. ; Shwartz, B. ; Usov, Y. ; Zhulanov, V. ; Zyukova, O.] Budker Inst Nucl Phys, Novosibirsk, Russia ; [Kawai, H.] Chiba Univ, Chiba, Japan ; [Kinoshita, K.] Univ Cincinnati, Cincinnati, OH 45221 USA ; [Lesiak, T.] T Kosciuszko Cracow Univ Technol, Krakow, Poland ; [Lange, J. S.] Univ Giessen, Giessen, Germany ; [Kim, Y. J.] Grad Univ Adv Studies, Hayama, Japan ; [Choi, S. -K.] Gyeongsang Natl Univ, Chinju, South Korea ; [Cheon, B. G. ; Unno, Y.] Hanyang Univ, Seoul 133791, South Korea ; [Browder, T. E. ; Li, J. ; Olsen, S. L. ; Sahoo, H. ; Shen, C. P. ; Varner, G.] Univ Hawaii, Honolulu, HI 96822 USA ; [Adachi, I. ; Brodzicka, J. ; Dalseno, J. ; Haba, J. ; Hazumi, M. ; Itoh, R. ; Iwasaki, Y. ; Katayama, N. ; Kichimi, H. ; Krokovny, P. ; Nakao, M. ; Nishida, S. ; Ozaki, H. ; Sakai, Y. ; Tanaka, M. ; Uehara, S. ; Uno, S. ; Yamauchi, M.] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki, Japan ; [Olsen, S. L. ; Wang, P. ; Wang, X. L. ; Yuan, C. Z. ; Zhang, C. C.] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China ; [Mandl, F.] Inst High Energy Phys, Vienna, Austria ; [Shapkin, M. ; Sokolov, A.] Inst High Energy Phys, Protvino, Russia ; [Pakhlova, G. ; Aushev, T. ; Balagura, V. ; Chistov, R. ; Danilov, M. ; Liventsev, D. ; Mizuk, R. ; Pakhlov, P. ; Tikhomirov, I. ; Uglov, T.] Inst Theoret & Expt Phys, Moscow 117259, Russia ; [Bitenc, U. ; Bracko, M. ; Kinoshita, K. ; Krizan, P. ; Staric, M. ; Zivko, T. ; Zupanc, A.] Jozef Stefan Inst, Ljubljana, Slovenia ; [Okuno, S. ; Watanabe, Y.] Kanagawa Univ, Yokohama, Kanagawa, Japan ; [Ha, H. ; Won, E.] Korea Univ, Seoul, South Korea ; [Hyun, H. J. ; Kah, D. H. ; Kim, H. J. ; Kim, H. O. ; Kim, Y. I. ; Park, H. ; Park, H. K.] Kyungpook Natl Univ, Taegu 702701, South Korea ; [Aushev, T. ; Schneider, O.] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland ; [Krizan, P.] Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia ; [Bracko, M.] Univ Maribor, SLO-2000 Maribor, Slovenia ; [Limosani, A. ; Taylor, G. N. ; Urquijo, P. ; Wedd, R.] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia ; [Hayasaka, K. ; Iijima, T. ; Inami, K. ; Miyazaki, Y. ; Mori, T. ; Ohshima, T. ; Senyo, K.] Nagoya Univ, Nagoya, Aichi 4648601, Japan ; [Miyabayashi, K. ; Noguchi, S.] Nara Womens Univ, Nara 630, Japan ; [Chen, A.] Natl Cent Univ, Chungli 32054, Taiwan ; [Wang, C. H.] Natl United Univ, Miaoli, Taiwan ; [Chang, P. ; Chiang, C. -C. ; Hou, W. -S. ; Hsiung, Y. B. ; Shiu, J. -G. ; Wang, M. -Z.] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan ; [Bozek, A. ; Lesiak, T. ; Matyja, A. ; Natkaniec, Z. ; Palka, H.] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland ; [Yamashita, Y.] Nippon Dent Univ, Niigata, Japan ; [Kawasaki, T. ; Miyata, H.] Niigata Univ, Niigata, Japan ; [Stanic, S.] Univ Nova Gorica, Nova Gorica, Slovenia ; [Nakano, E. ; Teramoto, Y.] Osaka City Univ, Osaka 558, Japan ; [Heffernan, D.] Osaka Univ, Osaka, Japan ; [Bhardwaj, V. ; Kumar, R. ; Singh, J. B.] Panjab Univ, Chandigarh 160014, India ; [Ishikawa, A.] Saga Univ, Saga 840, Japan ; [Liu, C. ; Zhang, Z. P.] Univ Sci & Technol China, Hefei 230026, Peoples R China ; [Kim, S. K. ; Lee, S. E.] Seoul Natl Univ, Seoul, South Korea ; [Choi, Y. ; Lee, J. S. ; Park, C. W.] Sungkyunkwan Univ, Suwon, South Korea ; [Bakich, A. M. ; Peak, L. S. ; Yabsley, B. D.] Univ Sydney, Sydney, NSW 2006, Australia ; [Ogawa, S.] Toho Univ, Funabashi, Chiba 274, Japan ; [Hoshi, Y.] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan ; [Aihara, H. ; Iwasaki, M.] Univ Tokyo, Dept Phys, Tokyo 113, Japan ; [Ishino, H.] Tokyo Inst Technol, Tokyo 152, Japan ; [Sumiyoshi, T.] Tokyo Metropolitan Univ, Tokyo 158, Japan ; [Nitoh, O.] Tokyo Univ Agr & Technol, Tokyo, Japan ; [Dash, M. ; Piilonen, L. E.] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA ; [Cho, I. -S. ; Kang, J. H. ; Kwon, Y. -J. ; Kyeong, S. -H.] Yonsei Univ, Seoul 120749, South Korea
摘要We report a measurement of the exclusive e(+) e(-) -> Lambda(+)(c)Lambda(-)(c) cross section as a function of center-of-mass energy near the Lambda(+)(c)Lambda(-)(c) threshold. A clear peak with a significance of 8.2 sigma is observed in the Lambda(+)(c)Lambda(-)(c) invariant mass distribution just above threshold. With an assumption of a resonance origin for the observed peak, a mass and width of M = [4634(-7)(+8)(stat)(-8)(+5)(syst)] MeV/c(2) and Gamma(tot) = [92(-24)(+40)(stat)(-21)(+10)(syst)] MeV are determined. The analysis is based on a study of events with initial-state-radiation photons in a data sample collected with the Belle detector at the Upsilon(4S) resonance and nearby continuum with an integrated luminosity of 695 fb(-1) at the KEKB asymmetric-energy e(+)e(-) collider.
文章类型Article
学科领域Physics
研究领域[WOS]Physics
DOI10.1103/PhysRevLett.101.172001
URL查看原文
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000260383600021
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被引频次:107[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/241018
专题实验物理中心
作者单位中国科学院高能物理研究所
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Pakhlova, G,Adachi, I,Aihara, H,et al. Observation of a Near-Threshold Enhancement in the e(+) e(-)-> Lambda(+)(c) Lambda(-)(c) Cross Section Using Initial-State Radiation[J]. PHYSICAL REVIEW LETTERS,2008,101(17):172001.
APA Pakhlova, G.,Adachi, I.,Aihara, H.,Arinstein, K.,Aulchenko, V.,...&Zyukova, O.(2008).Observation of a Near-Threshold Enhancement in the e(+) e(-)-> Lambda(+)(c) Lambda(-)(c) Cross Section Using Initial-State Radiation.PHYSICAL REVIEW LETTERS,101(17),172001.
MLA Pakhlova, G,et al."Observation of a Near-Threshold Enhancement in the e(+) e(-)-> Lambda(+)(c) Lambda(-)(c) Cross Section Using Initial-State Radiation".PHYSICAL REVIEW LETTERS 101.17(2008):172001.
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