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201. Search forCPviolation inD0decay

Author: W. S. Brower, S. Nakanishi, E. H. Thorndike, D. G. Cassel, D. J. Dumas, D. Riley, P. Pomianowski, A. Soffer, J. Masui, D. M. Asner, B. Spaan, T. Liu, C. Bebek, D. Coppage, J. P. Alexander, A. P. Freyberger, Ilya Kravchenko, Michael Wood, P. S. Drell, J. Bartelt, D. S. Crowcroft, V. Savinov, Karl Berkelman, J. W. Hinson, R. Elia, N. Kwak, Vivek Jain, Jorge Luis Rodriguez, Yoram Rozen, M. Bishai, Yuichi Kubota, L. Gibbons, D. Cinabro, M. Saulnier, G. E. Gladding, M. Gao, H. Yamamoto, S. Patton, D. Fujino, J. Ernst, J. Urheim, Philip Baringer, J. J. O'Neill, Alain Bellerive, Shawn W. Henderson, Anders Ryd, M. Athanas, B. I. Eisenstein, M. L. Kelly, Xiangjun Xing, B. Nemati, Yurii V. Mukhin, T. Lee, B. Gittelman, Y. Kwon, P. M. Patel, K. Lingel, S. Menary, S. W. Gray, G. Crawford, Richard Wilson, M. Modesitt, J. K. Nelson, D. Z. Besson, C. D. Jones, I. J. Kim, F. R. Wappler, Dave Britton, R. L. McIlwain, Yanwen Liu, J. G. Smith, B. E. Berger, S. E. Csorna, H. P. Paar, R. Fulton, R. Mountain, H. Kagan, A. H. Mahmood, K. Honscheid, C. M. Korte, M.A. Palmer, K. W. Edwards, V. Shelkov, S. Schrenk, E. Gerndt, R. Ehrlich, T. Miao, Harold S. Park, M. Goldberg, I. Korolkov, Ian Shipsey, D. He, M. Dickson, N. Copty, J. Gronberg, K. Kinoshita, S. L. Jones, Z. Ling, G. W. Brandenburg, N. Horwitz, M. Chadha, D. W. Bliss, T. E. Browder, Alice Bean, K. W. McLean, K. K. Gan, J. Dominick, A. Wolf, Z. Egyed, M. S. Alam, Maurice Garcia-Sciveres, S. Sanghera, Shengfeng Yang, C. Qiao, G. Wei, J. S. Miller, R. Kutschke, D. M. Coffman, R. J. Morrison, Mats A Selen, J. J. Thaler, M. Sung, N. Hancock, A. J. Sadoff, Frank Würthwein, G. Masek, B. K. Heltsley, D. Roberts, E. R.F. Hyatt, K. Cho, P. Skubic, M. Ogg, M. Momayezi, M. Lattery, Juliet Ritchie Patterson, G. Zhu, D. F. Cowen, D. H. Miller, Ruifang Wang, M. Lohner, F. Muheim, N. B. Mistry, P. Gaidarev, T. Bergfeld, X. Fu, T. Skwarnicki, Pu Wang, E. Nordberg, Jeffrey Richman, P. C. Kim, D. L. Kreinick, R. Ammar, W. R. Ross, H. Tajima, S. Kotov, S. Playfer, R. Janicek, G. C. Moneti, Ha Lam, G. S. Ludwig, T. K. Nelson, V. Fadeyev, R. Davis, Ryszard Stroynowski, George D Gollin, Sheldon Stone, I. Volobouev, Paul Avery, E. I. Shibata, D. Payne, H. A. Cho, T. E. Coan, H. Severini, S. Chan, S. Roberts, John Yelton, M. Lambrecht, D. L. Hartill, M. M. Zoeller, P. Rankin, C. O'Grady, R. Poling, Jungil Lee, C. R. Ng, J. Mevissen, C. R. Sun, W. T. Ford, Kenneth Bloom, R. D. Kass, B. C. Barish, Michael S. Witherell, J. Kandaswamy, R. Balest, N. Katayama, G. Eigen, D. Peterson, D. B. MacFarlane, A. J. Weinstein, J. Fast, Christopher G. White, H. N. Nelson, D. Gibaut, and Marina Artuso
Subjects: Physics, Nuclear physics, Particle decay, Particle physics, Electron–positron annihilation, media_common.quotation_subject, Mass spectrum, CP violation, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Asymmetry, Eigenvalues and eigenvectors, media_common
Abstract: This is the publisher's version also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.52.4860.
Published: 1995

202. Observation of the Isospin-Violating DecayDs*+→Ds+π0

Author: A. Wolf, S. Sanghera, N. Hancock, T. K. Nelson, M. M. Zoeller, J. Urheim, Jungil Lee, W. R. Ross, I. Volobouev, A. H. Mahmood, G. Masek, G. C. Moneti, Juliet Ritchie Patterson, T. Liu, Frank Würthwein, K. Cho, N. B. Mistry, W. S. Brower, C. Bebek, J. J. Thaler, P. Pomianowski, E. I. Shibata, A. P. Freyberger, J. Mevissen, M. Momayezi, John Yelton, M. Lambrecht, S. Nakanishi, E. H. Thorndike, K. Honscheid, Ilya Kravchenko, J. Kandaswamy, Michael Wood, Y. Kwon, C.Y. Prescott, J. W. Hinson, D. Z. Besson, C. M. Korte, J. Gronberg, D. Gibaut, N. Horwitz, A. Soffer, D. Coppage, J. P. Alexander, K. K. Gan, M. Chadha, D. Peterson, D. S. Crowcroft, M. Ogg, Shengfeng Yang, E. Gerndt, Marina Artuso, N. Kwak, D. F. Cowen, K. W. Edwards, M. Bishai, Ruifang Wang, T. Bergfeld, S. Menary, Dave Britton, G. Crawford, M. Dickson, Ryszard Stroynowski, T. Lee, H. Kagan, V. Shelkov, S. Schrenk, J. K. Nelson, P. Rankin, J. Fast, C. Qiao, Christopher G. White, I. Korolkov, D. J. Dumas, Sacha E Kopp, R. Mountain, M. S. Alam, N. Copty, H. A. Cho, B. C. Barish, Karl Berkelman, R. J. Morrison, E. R.F. Hyatt, M. Lattery, Mats A Selen, L. Gibbons, V. Fadeyev, A. J. Sadoff, J. Masui, B. Spaan, F. Muheim, D. H. Miller, T. Miao, Anders Ryd, M. Athanas, D. L. Hartill, P. Gaidarev, Z. Ling, Sz Márka, Maurice Garcia-Sciveres, X. Fu, I. P.J. Shipsey, S. Playfer, R. Poling, C. R. Sun, M.A. Palmer, C. R. Ng, R. Davis, Vivek Jain, W. T. Ford, R. D. Kass, Michael S. Witherell, George D Gollin, D. G. Cassel, H. Tajima, R. Balest, D. Fujino, J. J. O'Neill, R. Ammar, Yurii V. Mukhin, C. D. Jones, T. E. Coan, H. Severini, S. Chan, C. O'Grady, B. E. Berger, Pu Wang, M. Lohner, B. I. Eisenstein, Sheldon Stone, M. Goldberg, Paul Avery, G. Wei, B. Nemati, M. Sung, H. Yamamoto, D. Roberts, B. Gittelman, I. J. Kim, F. R. Wappler, S. E. Csorna, K. Kinoshita, G. W. Brandenburg, P. S. Drell, R. Elia, Jorge Luis Rodriguez, M. Saulnier, J. Ernst, Harold S. Park, Alice Bean, R. Kutschke, S. Kotov, R. Janicek, D. L. Kreinick, D. He, T. E. Browder, S. Roberts, Kenneth Bloom, P. Skubic, N. Katayama, G. Eigen, Shawn W. Henderson, D. M. Coffman, B. K. Heltsley, D. Cinabro, G. E. Gladding, S. Patton, D. W. Bliss, M. Gao, H. P. Paar, R. Fulton, E. Nordberg, Jeffrey Richman, G. S. Ludwig, D. B. MacFarlane, A. J. Weinstein, H. N. Nelson, D. Riley, D. M. Asner, J. Bartelt, T. Skwarnicki, Yuichi Kubota, P. C. Kim, Alain Bellerive, K. W. McLean, P. M. Patel, K. Lingel, S. W. Gray, Richard Wilson, M. Modesitt, R. Ehrlich, S. L. Jones, J. Dominick, J. S. Miller, Yanwen Liu, J. G. Smith, S. D. Johnson, V. Savinov, Philip Baringer, and Xiangjun Xing
Subjects: Physics, Crystallography, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Isospin, Radiative decay, General Physics and Astronomy
Abstract: Using data collected with the CLEO II detector, we have observed the isospin-violating decay {ital D}{sub {ital s}}{sup *+}{r_arrow}{ital D}{sup +}{sub {ital s}}{pi}{sup 0}. The decay rate for this mode, relative to the dominant radiative decay, is found to be {Gamma}({ital D}{sub {ital s}}{sup *+}{r_arrow}{ital D}{sup +}{sub {ital s}}{pi}{sup 0}) /{Gamma}({ital D}{sub {ital s}}{sup *+}{r_arrow}{ital D}{sup +}{ital s}{gamma}) =0.062{sub {minus}0.018}{sup +0.020}{plus_minus}0.022. {copyright} {ital 1995} {ital The} {ital American} {ital Physical} {ital Society}.
Published: 1995

203. Measurement of the absolute branching fraction of D + → K̅ 0 e + ν e via K̅ 0 → π 0 π 0

Author: Y. J. Mao, Kai Liu, H. X. Yang, Tao Luo, H. Liang, S. B. Liu, Y. Nefedov, Z. Ning, B. X. Yu, I. B. Nikolaev, Q. P. Ji, Huihui Liu, C. Leng, Zhi Zeng, Z. H. Wang, H. J. Lu, J. G. Lu, J. P. Liu, J. G. Messchendorp, H. S. Chen, Alperen Yuncu, F. E. Maas, D. Bettoni, H. L. Dai, Igor Boyko, J. P. Dai, Qiunan Xu, M. Shi, Cui Li, C. F. Redmer, Xiaocong Ai, Xiaozhong Huang, T. Hu, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, Ron Poling, L. J. Wu, F. Li, Y. J. Mo, R. Kliemt, F. C. Ma, N. Yu. Muchnoi, X. S. Kang, Y. H. Zhang, Jun-Yi Zhang, Y. P. Guo, Z. P. Zhang, J. F. Sun, D. J. Ambrose, J. Q. Zhang, A. Zhemchugov, X. T. Huang, A. A. Zafar, G. Rong, G. Cibinetto, Jie Yu, Z. Haddadi, L. Yang, P. X. Shen, Z. Wu, L. W. Jiang, Zhiqing Zhang, T. Weber, Yunlong Zhang, S. Qian, X. N. Li, Q. An, Jialun Ping, Z. Y. Wang, T. J. Min, S. Marcello, Y. Zeng, Y. X. Xia, S. H. Zhu, M. Albrecht, D. W. Bennett, Zujian Wang, S. Han, K. J. Zhu, L. Zotti, J. Y. Liu, Jin Li, Haiping Peng, X. C. Lou, W. G. Li, Guangshun Huang, Andrzej Kupsc, W. C. Yan, L. Yan, K. Zhang, J. L. Zhang, X. Y. Zhang, W. L. Yuan, S. Spataro, X. P. Xu, R. Baldini Ferroli, E. H. Thorndike, M. Lara, W. D. Li, H. J. Li, X. N. Ma, Y. T. Liang, J. F. Qiu, J. Z. Bai, L. H. Wu, Liqing Xu, X. Y. Shen, A. Calcaterra, Q. L. Xiu, Q. Liu, M. G. Zhao, Lei Li, J. B. Liu, H. M. Liu, M. N. Achasov, L. P. Zhou, Jianping Zheng, S. Zhu, L. Q. Qin, J. H. Liu, R. P. Guo, Q. Gao, F. Feldbauer, Y. J. Sun, E. Boger, Y. B. Zhao, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, W. Shan, M. L. Chen, F. Nerling, Y. M. Ma, F. A. Harris, M. Savrie, Y. N. Zhang, J. Dong, G. S. Varner, Y. N. Gao, Y. Zhang, Y. Ding, L. L. Ma, X. B. Ji, M. Tiemens, L. Gong, G. F. Cao, Z. P. Mao, W. Gradl, Ke Wang, B. J. Liu, J. Z. Fan, A. Q. Guo, I. Garzia, X. C. Chen, J. M. Bian, Y. Q. Wang, Y. P. Lu, S. Nisar, C. J. Tang, H. P. Cheng, J. Fang, Tao Li, X. Y. Gao, L. Xia, Y. Hu, J. J. Zhang, S. J. Zhao, L. G. Xia, A. Amoroso, W. M. Song, M. Ripka, D. Y. Wang, W. Kühn, Y. X. Yang, I. Tapan, Z. Gao, M. Destefanis, I. Uman, X. L. Ji, P. F. Duan, Fenfen An, B. L. Wang, T. C. Zhao, W. P. Wang, Z. H. Qin, Ch. Rosner, B. Wang, D. Xiao, M. Fritsch, Bingxuan Liu, A. Zallo, Q. Ouyang, S. S. Fang, G. A. Chelkov, G. Li, Zhiqing Liu, Talib Hussain, Z. A. Zhu, X. Y. Jiang, A. Dbeyssi, J. Min, Q. J. Xu, J. C. Chen, M. M. Ma, C. Hu, Yanwei Wang, O. Fedorov, C. D. Fu, Y. B. Liu, Y. H. Yan, J. W. Zhao, C. Q. Feng, X. R. Chen, J. J. Xu, T. Johansson, J. F. Chang, P. L. Wang, Z. Y. Deng, Y. C. Zhu, Y. G. Xie, A. Hafner, Q. Zhao, Y. Z. Sun, M. Kornicer, S. X. Du, Jie Zhao, D. X. Lin, Nasser Kalantar-Nayestanaki, H. M. Hu, X. Tang, Z. L. Dou, Xingguo Li, M. Maggiora, Ling Zhao, G. X. Sun, J. V. Bennett, A. Julin, F. De Mori, C. Morales Morales, Yue Pan, O. B. Kolcu, X. Cai, C. P. Shen, Xiang Zhou, Yaquan Fang, Gang Zhao, B. Kopf, X. Liu, H. R. Qi, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Z. G. Wang, Lei Zhao, Z. L. Hou, E. Fioravanti, Y. B. Li, X. L. Luo, F. Bianchi, X. Y. Zhou, X. Q. Hao, K. L. He, M. Kavatsyuk, J. W. Zhang, K. Schoenning, Q. Y. Li, B. S. Zou, H. Y. Zhang, M. Ullrich, Z. J. Xiao, G. R. Liao, Klaus Peters, J. F. Hu, Xiao-Tong Lu, M. Z. Wang, R. Farinelli, X. L. Gao, C. Z. Yuan, S. J. Chen, Jimin Zhao, H. Xiao, T. Held, G. F. Chen, X. F. Wang, C. Dong, S. Sosio, H. L. Ma, D. M. Li, L. Fava, B. X. Zhang, Q. M. Ma, H. Muramatsu, Serkant Ali Cetin, Joachim Pettersson, Y. N. Guo, B. Kloss, M. Qi, M. Pelizaeus, X. Y. Niu, H. J. Yang, J. S. Huang, Y. Yuan, Y. S. Zhu, Yu Zhang, J. Y. Zhang, Magnus Wolke, Y. F. Liang, D. P. Jin, Dayong Wang, N. Qin, D. Y. Liu, J. B. Jiao, P. Larin, C. X. Liu, Y. K. Heng, S. Z. Chen, Chi Zhang, S. Q. Zhang, X. Fang, Z. L. Huang, Feng Liu, M. Ablikim, K. Goetzen, S. Schumann, Yao Wang, J. C. Li, G. F. Xu, S. Jin, Z. T. Sun, J. Zhuang, Z. A. Liu, M. X. Luo, Yucheng Huang, D. V. Dedovich, V. Prasad, Y. Ban, P. Weidenkaff, X. Y. Song, Z. G. Zhao, P. Patteri, S. P. Wen, H. H. Zhang, X. S. Qin, Z. J. Sun, H. Loehner, H. B. Li, A. G. Denig, C. L. Luo, X. R. Zhou, C. C. Zhang, B. Zhong, L. B. Guo, Ulrich Wiedner, Cheng Li, T. Ma, X. K. Chu, Peilian Liu, Lingxuan Zhang, Zhiyong Zhang, Xichao Ruan, M. H. Gu, H. Y. Sheng, C. X. Yu, B. Zheng, R. G. Ping, J. H. Yin, K. H. Rashid, M. Shao, Y. T. Gu, X. L. Kang, A. Sarantsev, D. H. Wei, P. R. Li, J. S. Lange, Q. W. Zhao, X. H. Mo, L. S. Wang, M. H. Ye, L. L. Wang, H. Cai, L. D. Liu, L. Y. Dong, W. J. Zheng, Bibo Ke, W. B. Yan, S. Pacetti, M. Y. Dong, H. B. Liu, J. H. Zou, G. Felici, S. S. Sun, R. E. Mitchell, K. Li, X. K. Zhou, Fang Liu, I. Denysenko, P. Kiese, B. Y. Zhang, S. L. Olsen, R. A. Briere, X. S. Jiang, O. Cakir, Y. F. Wang, X. Y. Ma, W. X. Gong, X. H. Sun, S. L. Niu, F. Y. Li, X. Q. Li, M. Greco, K. Y. Liu, Z. B. Li, M. Bertani, and Y. H. Guan
Subjects: Physics, Semileptonic decay, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Astronomy and Astrophysics, 01 natural sciences, Nuclear physics, 0103 physical sciences, Pi, 010306 general physics, Instrumentation, Bar (unit)
Abstract: By analyzing 2.93 fb(-1) data collected at the center-of-mass energy root s = 3.773 GeV with the BESIII detector, we measure the absolute branching fraction of the semileptonic decay D+ -> (K) over bar (0)e(+)nu(e) to be B(D (+) -> (K) over bar (0)e(+)nu(e)) = (8.59 +/- 0.14 +/- 0.21)% using (K) over bar (0) -> K-S(0) -> pi(0) pi(0), where the first uncertainty is statistical and the second systematic. Our result is consistent with previous measurements within uncertainties..
Published: 2016

204. Measurement of α from τ decays

Author: Pu Wang, E. I. Shibata, T. E. Coan, D. B. MacFarlane, Jungil Lee, A. J. Weinstein, E. Gerndt, D. M. Coffman, H. N. Nelson, K. W. Edwards, J. Masui, Z. Egyed, B. Spaan, J. K. Nelson, B. K. Heltsley, R. Ehrlich, D. Z. Besson, Anders Ryd, M. Athanas, M. Dickson, G. D. Gollin, S. L. Jones, T. Liu, C. Bebek, N. Kwak, J. Dominick, A. P. Freyberger, M. Bishai, M. Sivertz, C. Qiao, R. Mountain, Vivek Jain, Ruifang Wang, T. Miao, S. Nakanishi, E. H. Thorndike, T. Bergfeld, V. Fadeyev, S. Menary, Dave Britton, John Yelton, M. Sung, D. Coppage, R. L. McIlwain, M. Lambrecht, J. P. Alexander, D. G. Cassel, D. Gibaut, V. Shelkov, S. Schrenk, D. Roberts, F. Muheim, D. L. Kreinick, M. Ogg, R. S. Galik, D. J. Dumas, S. Roberts, S. Playfer, Ryszard Stroynowski, Karl Berkelman, D. L. Hartill, A. Soffer, J. Fast, P. Rankin, D. S. Crowcroft, Christopher G. White, G. Zhu, Marina Artuso, B. Nemati, B. I. Eisenstein, V. Savinov, D. Cinabro, G. E. Gladding, D. H. Miller, S. Patton, Yoram Rozen, F. R. Wappler, Youngjoon Kwon, G. Crawford, Frank Würthwein, K. Cho, H. Kagan, Philip Baringer, Shengfeng Yang, B. Gittelman, Xiangjun Xing, D. F. Cowen, R. J. Morrison, Mats A Selen, M. S. Alam, A. J. Sadoff, M. Gao, P. Gaidarev, E. R.F. Hyatt, M. Lattery, H. P. Paar, R. Fulton, J. S. Miller, X. Fu, M. Modesitt, J. Urheim, I. J. Kim, R. Ammar, E. Nordberg, H. Severini, S. Chan, G. S. Ludwig, C. O'Grady, C. D. Jones, H. Yamamoto, Maurice Garcia-Sciveres, Yanwen Liu, J. G. Smith, Z. Ling, K. K. Gan, T. Skwarnicki, D. He, B. E. Berger, W. S. Brower, P. C. Kim, T. E. Browder, P. Pomianowski, I. P.J. Shipsey, M. Goldberg, G. C. Moneti, Harold S. Park, Alice Bean, Ilya Kravchenko, Michael Wood, J. W. Hinson, A. Wolf, R. Kutschke, S. Sanghera, M.A. Palmer, Kenneth Bloom, M. Lohner, N. Katayama, M. L. Kelly, S. W. Gray, D. W. Bliss, N. Hancock, G. Eigen, Ha Lam, J. D. Richman, B. C. Barish, P. Skubic, D. Riley, S. E. Csorna, P. S. Drell, R. Elia, Jorge Luis Rodriguez, M. Saulnier, J. Ernst, G. Wei, K. Kinoshita, G. W. Brandenburg, D. Payne, H. A. Cho, D. M. Asner, R. Poling, C. R. Ng, Michael S. Witherell, G. Masek, Juliet Ritchie Patterson, J. Bartelt, Shawn W. Henderson, H. Tajima, T. K. Nelson, M. M. Zoeller, K. Honscheid, Yuichi Kubota, N. B. Mistry, C. M. Korte, D. Fujino, J. J. O'Neill, Yurii V. Mukhin, Alain Bellerive, K. W. McLean, P. M. Patel, L. Gibbons, K. Lingel, W. R. Ross, R. Davis, J. Gronberg, N. Horwitz, M. Chadha, I. Volobouev, I. Korolkov, S. Kotov, J. J. Thaler, N. Copty, Richard Wilson, R. Janicek, J. Mevissen, M. Momayezi, J. Kandaswamy, D. Peterson, C. R. Sun, W. T. Ford, R. D. Kass, R. Balest, Sheldon Stone, Paul Avery, and A. H. Mahmood
Subjects: Quantum chromodynamics, Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Spectral moments, Electron–positron annihilation, Hadron, Mass spectrum, High Energy Physics::Experiment, Invariant mass, Constant (mathematics), Parametrization
Abstract: We present measurements of spectral moments extracted from the invariant mass distributions of the final states of hadronic τ decay products recorded in the CLEO detector. From a fit of theoretical predictions to the measurements of spectral moments and the total hadronic decay width of the τ, we determine the strong coupling constant and a set of non-perturbative QCD parameters. The strong coupling constant is measured to be α s ( m τ ) = 0.306 ± 0.024, which when extrapolated to the Z mass, yields α s ( M z ) = 0.114 ± 0.003.
Published: 1995

205. Search forB→ℓν¯ℓ

Author: W. R. Ross, D. Riley, E. H. Thorndike, M. Lohner, N. Horwitz, J. J. O'Neill, M. Chadha, D. Coppage, J. P. Alexander, D. J. Payne, James E. Fast, Yurii V. Mukhin, H. Kagan, T. Liu, S. Playfer, G. E. Gladding, Z. Ling, Yuichi Kubota, C. P. O'Grady, M. Modesitt, H. A. Cho, John E. Bartelt, D. J. Dumas, R. S. Galik, C. R. Ng, M. Momayezi, Robert K. Kutschke, D. Gibaut, S. W. Gray, R. J. Morrison, Mats A Selen, Michael S. Witherell, M.K. Sung, Karl Berkelman, M. Ogg, G. Zhu, H. Tajima, A. P. Freyberger, Shawn W. Henderson, G. Masek, Juliet Ritchie Patterson, Alain Bellerive, Horst Severini, S. Roberts, A. J. Sadoff, D. Z. Besson, S. J. Patton, X. Fu, D. A. Roberts, Anders Ryd, M. Athanas, B. E. Berger, J. L. Rodriguez, P. S. Drell, Frank Würthwein, R. Elia, R. Ehrlich, K. K. Gan, T. Skwarnicki, M. Saulnier, K. Cho, Marina Artuso, S. L. Jones, P. C. Kim, F. Muheim, R. Mountain, N. B. Mistry, M. Dickson, M. Garcia-Sciveres, K. Honscheid, M. Goldberg, G. C. Moneti, M. Kelly, D. Cinabro, C. M. Korte, N. Kwak, R. J. Wilson, Vipul Jain, John Yelton, E.R.F. Hyatt, J. Masui, S. Nakanishi, Sheldon Stone, M. Bishai, B. Gittelman, J. Mevissen, J. Kandaswamy, Ryszard Stroynowski, D. Fujino, Paul Avery, I. J. Kim, W. S. Brower, P. Pomianowski, M. Lambrecht, D. G. Cassel, C. Qiao, K. W. Edwards, G. Wei, J. A. Ernst, Yoram Rozen, E. Gerndt, Harold S. Park, P. Rankin, Philip Baringer, D. L. Hartill, R. Poling, Christopher G. White, D. M. Asner, P. M. Patel, D. Peterson, I. P. J. Shipsey, K. W. McLean, D. He, M. Gao, Xiangjun Xing, R. Ammar, J. Gronberg, D. W. Bliss, E. I. Shibata, Ilya Kravchenko, Janice Nelson, Z. Egyed, C. R. Sun, W. T. Ford, D. S. Crowcroft, J. Urheim, Alice Bean, Ilya Korolkov, Dave Britton, R. L. McIlwain, A. Soffer, R. D. Kass, B. I. Eisenstein, H. P. Paar, S. Chan, R. Fulton, R. Balest, N. Copty, C. D. Jones, Michael Wood, J. W. Hinson, S. Schrenk, B. Nemati, P. Skubic, R. Davis, F. R. Wappler, J. S. Miller, Glen D. Crawford, L. K. Gibbons, T. Bergfeld, A. J.R. Weinstein, June Hyuk Lee, M. S. Alam, Shengfeng Yang, D. H. Miller, Vitaliy Fadeyev, T. K. Nelson, R. Janicek, S. Menary, P. Gaidarev, Igor Volobouev, M. M. Zoeller, Yanwen Liu, Y. J. Kwon, B. Spaan, J. G. Smith, M.A. Palmer, E. Nordberg, A. H. Mahmood, V.G. Shelkov, Kenneth Bloom, D. F. Cowen, T. Miao, S. Sanghera, Pu Wang, N. Katayama, G. Eigen, J. J. Thaler, G. S. Ludwig, N. Hancock, K. Lingel, S. E. Csorna, Ha Lam, J. D. Richman, M. Lattery, S. Kotov, B. C. Barish, K. Kinoshita, G. W. Brandenburg, T. E. Coan, D. B. MacFarlane, H. N. Nelson, A. Wolf, H. Yamamoto, R. Wang, D. L. Kreinick, C. Bebek, T. E. Browder, J. Dominick, V. Savinov, D. M. Coffman, B. K. Heltsley, and G. D. Gollin
Subjects: Combinatorics, Physics, General Physics and Astronomy
Abstract: We search for the decays ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$ in a sample of $2.2\ifmmode\times\else\texttimes\fi{}{10}^{6}$ charged $B$ decays using the CLEO detector. We see no evidence for a signal in any channel and set upper limits on the branching fractions of $B({B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\tau}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\tau}})l2.2\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$, $B({B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}})l2.1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$, and $B({B}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{e})l1.5\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$ at the 90% confidence level.
Published: 1995

206. Form Factor Ratio Measurement inΛc+→Λe+νe

Author: P. Zadorozhny, F. Muheim, D. He, J. J. Thaler, T. E. Browder, Richard Wilson, S. Playfer, C. D. Jones, M. Momayezi, M. Sapper, Jungil Lee, R. Ammar, P. Skubic, M. Modesitt, M. Goldberg, M.A. Palmer, T. Skwarnicki, P. C. Kim, D. Riley, Shawn W. Henderson, H. Severini, S. Chan, C. O'Grady, Ha Lam, D. H. Miller, M. S. Alam, P. Gaidarev, J. Bartelt, J. Ernst, J. G. Smith, G. Zhu, X. Fu, B. C. Barish, J. K. Nelson, D. Gibaut, E. R.F. Hyatt, M. Lattery, A. Wolf, E. Gerndt, A. H. Mahmood, Z. Ling, J. Masui, B. Spaan, K. W. Edwards, S. Sanghera, I. P.J. Shipsey, R. Mountain, Z. Egyed, M. Procario, N. Kwak, K. Lingel, M. Bishai, Anders Ryd, W. S. Brower, M. Athanas, N. Hancock, Vivek Jain, J. Mevissen, H. Yamamoto, P. Pomianowski, D. Sperka, Yuichi Kubota, C. M. Daubenmier, S. Menary, Dave Britton, M. Sung, G. C. Moneti, J. Kandaswamy, Ilya Kravchenko, Ryszard Stroynowski, Marina Artuso, Ruifang Wang, T. Bergfeld, R. L. McIlwain, T. Miao, S. Salman, Michael Wood, J. W. Hinson, C. R. Sun, W. T. Ford, Maurice Garcia-Sciveres, P. S. Drell, V. Shelkov, S. Schrenk, P. Rankin, R. D. Kass, R. Balest, S. E. Csorna, F. Butler, H. Tajima, D. Peterson, Jorge Luis Rodriguez, T. K. Nelson, K. Kinoshita, M. Saulnier, Chunjie Wang, R. Davis, E. I. Shibata, D. G. Cassel, George D Gollin, D. Fujino, J. Gronberg, John Yelton, J. S. Miller, J. J. O'Neill, M. M. Zoeller, B. Nemati, M. Lambrecht, Alain Bellerive, Y. Kwon, J. Urheim, W. R. Ross, D. B. MacFarlane, A. J. Weinstein, M. L. Kelly, B. Gittelman, Yurii V. Mukhin, N. Horwitz, M. Chadha, D. Z. Besson, Shengfeng Yang, H. N. Nelson, S. W. Gray, H. Kagan, I. Volobouev, I. J. Kim, F. R. Wappler, B. I. Eisenstein, Sheldon Stone, P. M. Patel, D. F. Cowen, Paul Avery, K. Honscheid, K. K. Gan, T. Liu, C. M. Korte, B. Geiser, M. Gao, C. Bebek, M. Lohner, H. P. Paar, R. Fulton, Pu Wang, K. Cho, N. Copty, D. J. Dumas, A. P. Freyberger, N. B. Mistry, B. Ong, E. Nordberg, Jeffrey Richman, G. S. Ludwig, R. J. Morrison, Mats A Selen, Karl Berkelman, J. Fast, L. Gibbons, A. J. Sadoff, Christopher G. White, V. Savinov, D. S. Crowcroft, Yoram Rozen, F. Würthwein, Philip Baringer, Xiangjun Xing, G. Crawford, R. Ehrlich, C. Qiao, S. Nakanishi, S. L. Jones, E. H. Thorndike, J. Dominick, D. Coppage, J. P. Alexander, Alice Bean, R. Kutschke, M. Ogg, S. Kotov, Kenneth Bloom, N. Katayama, G. Eigen, D. L. Kreinick, S. Roberts, M. Battle, D. Cinabro, S. Patton, Daniel Johnson, D. M. Coffman, B. K. Heltsley, G. Wei, D. Payne, H. A. Cho, D. L. Hartill, R. Poling, C. R. Ng, Michael S. Witherell, G. Masek, and Juliet Ritchie Patterson
Subjects: Physics, Semileptonic decay, Combinatorics, Particle physics, Angular distribution, Maximum likelihood, Electron–positron annihilation, Form factor (quantum field theory), General Physics and Astronomy, Statistical analysis, Ratio measurement, Lambda baryon
Abstract: The angular distributions of the decay ${\ensuremath{\Lambda}}_{c}^{+}\ensuremath{\rightarrow}\ensuremath{\Lambda}{e}^{+}{\ensuremath{\nu}}_{e}$ have been studied using the CLEO II detector. By performing a three-dimensional maximum likelihood fit, the form factor ratio ${R\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}f}_{2}{/f}_{1}$ is determined to be $\ensuremath{-}0.25\ifmmode\pm\else\textpm\fi{}0.14\ifmmode\pm\else\textpm\fi{}0.08$. The decay asymmetry parameter of the ${\ensuremath{\Lambda}}_{c}$ averaged over ${q}^{2}$ is calculated to be ${\ensuremath{\alpha}}_{{\ensuremath{\Lambda}}_{c}}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}\ensuremath{-}0.82}_{\ensuremath{-}0.06\ensuremath{-}0.03}^{+0.09+0.06}$.
Published: 1995

207. New Decay Modes of theΛc+Charmed Baryon

Author: Z. Ling, Juliet Ritchie Patterson, D. He, I. P.J. Shipsey, J. J. Thaler, T. E. Browder, Jungil Lee, R. Davis, D. G. Cassel, H. Tajima, M. Momayezi, M. Sapper, A. Wolf, J. Gronberg, D. Fujino, N. Horwitz, J. J. O'Neill, Yurii V. Mukhin, S. Sanghera, M. Chadha, N. Hancock, C. M. Daubenmier, Ryszard Stroynowski, S. E. Csorna, B. Ong, G. Zhu, M. Gao, H. P. Paar, R. Fulton, P. Skubic, K. Kinoshita, S. Nakanishi, M. L. Kelly, S. W. Gray, Richard Wilson, J. Urheim, G. Wei, P. Rankin, T. Skwarnicki, D. M. Coffman, D. Gibaut, J. Fast, P. C. Kim, E. H. Thorndike, Christopher G. White, D. Payne, H. Kagan, H. A. Cho, B. K. Heltsley, Anders Ryd, Chunjie Wang, M. Athanas, E. Nordberg, Jeffrey Richman, G. D. Gollin, D. L. Hartill, Shawn W. Henderson, M. Modesitt, B. Nemati, R. Poling, C. R. Ng, G. S. Ludwig, B. I. Eisenstein, K. Lingel, D. Riley, D. L. Kreinick, T. Miao, B. Gittelman, N. Kwak, M. Bishai, Michael S. Witherell, I. J. Kim, D. Coppage, M. Sung, J. Bartelt, J. P. Alexander, W. R. Ross, F. R. Wappler, J. G. Smith, R. J. Morrison, S. Kotov, S. Roberts, M. Battle, Mats A Selen, A. J. Sadoff, Shengfeng Yang, D. J. Dumas, Maurice Garcia-Sciveres, R. Ehrlich, Marina Artuso, Y. Kwon, M. Ogg, D. H. Miller, Yuichi Kubota, I. Volobouev, T. K. Nelson, A. H. Mahmood, Karl Berkelman, S. Menary, Dave Britton, P. Gaidarev, W. S. Brower, S. L. Jones, P. S. Drell, R. L. McIlwain, X. Fu, E. Gerndt, D. F. Cowen, D. B. MacFarlane, A. J. Weinstein, L. Gibbons, K. W. Edwards, P. Pomianowski, D. Cinabro, D. S. Crowcroft, D. Z. Besson, Jorge Luis Rodriguez, V. Shelkov, S. Schrenk, J. Dominick, Alain Bellerive, M. Saulnier, R. Ammar, Z. Egyed, H. N. Nelson, M. M. Zoeller, Sheldon Stone, S. Patton, Paul Avery, Ilya Kravchenko, D. Sperka, S. Salman, Michael Wood, P. M. Patel, H. Severini, S. Chan, J. K. Nelson, Ruifang Wang, V. Savinov, T. Bergfeld, B. Geiser, J. W. Hinson, Daniel Johnson, C. O'Grady, G. Crawford, M. S. Alam, Yoram Rozen, R. Mountain, F. Würthwein, K. K. Gan, M. Lohner, J. Ernst, E. R.F. Hyatt, Pu Wang, K. Cho, F. Butler, M. Lattery, C. Qiao, T. Liu, Philip Baringer, P. Zadorozhny, F. Muheim, N. B. Mistry, John Yelton, M. Lambrecht, J. Mevissen, C. Bebek, Xiangjun Xing, A. P. Freyberger, J. Kandaswamy, S. Playfer, G. C. Moneti, D. Peterson, C. R. Sun, W. T. Ford, R. D. Kass, J. S. Miller, R. Balest, E. I. Shibata, Alice Bean, R. Kutschke, H. Yamamoto, Kenneth Bloom, N. Katayama, G. Eigen, M.A. Palmer, Ha Lam, N. Copty, K. Honscheid, C. M. Korte, B. C. Barish, C. D. Jones, M. Goldberg, J. Masui, B. Spaan, Vivek Jain, and G. Masek
Subjects: Baryon, Physics, Charmed baryons, Crystallography, Pair production, Meson, Branching fraction, General Physics and Astronomy, Atomic physics, Lambda baryon, Lambda, Sigma baryon
Abstract: We have observed five new decay modes of the charmed baryon {Lambda}{sup +}{sub {ital c}} using data collected with the CLEO II detector. Four decay modes, {Lambda}{sup +}{sub {ital c}}{r_arrow}{ital p{bar K}}{sup 0}{eta}, {Lambda}{eta}{pi}{sup +}, {Sigma}{sup +}{eta}, and {Sigma}{sup *+}{eta}, are first observations of final states with an {eta} meson, while the fifth mode, {Lambda}{sup +}{sub {ital c}}{r_arrow}{Lambda}{ital {bar K}}{sup 0}{ital K}{sup +}, requires the creation of an {ital s{bar s}} quark pair. We measure the branching fractions of these modes relative to {Lambda}{sup +}{sub {ital c}}{r_arrow}{ital pK}{sup -}{pi}{sup +} to be 0.25{plus_minus}0.04{plus_minus}0.04, 0.35{plus_minus}0.05{plus_minus}0.06, 0.11{plus_minus}0.03{plus_minus}0.02, 0.17{plus_minus}0.04{plus_minus}0.03, and 0.12{plus_minus}0.02{plus_minus}0.02, respectively.
Published: 1995

208. Observation of Excited Charmed Baryon States Decaying toΛc+π+π−

Author: D. Payne, H. A. Cho, D. Riley, D. L. Hartill, R. Poling, C. R. Ng, R. Davis, George D Gollin, J. Bartelt, H. Yamamoto, C. M. Daubenmier, Michael S. Witherell, Ryszard Stroynowski, P. Zadorozhny, F. Muheim, Y. Kwon, D. Z. Besson, P. Rankin, Yuichi Kubota, S. Playfer, T. Miao, K. Honscheid, C. M. Korte, K. K. Gan, J. J. Thaler, Shawn W. Henderson, J. S. Miller, E. Gerndt, Chunjie Wang, N. Copty, T. Liu, Z. Ling, I. P.J. Shipsey, G. Masek, Juliet Ritchie Patterson, M. Momayezi, J. Gronberg, D. Gibaut, C. Bebek, M. Sapper, N. Horwitz, M. Chadha, K. W. Edwards, R. Ammar, H. Severini, S. Chan, C. O'Grady, M. S. Alam, Z. Egyed, P. S. Drell, D. Cinabro, A. P. Freyberger, V. Savinov, Yoram Rozen, F. Würthwein, Alice Bean, Shengfeng Yang, T. Skwarnicki, D. B. MacFarlane, A. J. Weinstein, J. Ernst, Maurice Garcia-Sciveres, D. S. Crowcroft, D. He, Jorge Luis Rodriguez, M. Saulnier, Philip Baringer, R. Kutschke, T. E. Browder, D. Sperka, P. C. Kim, S. Patton, Xiangjun Xing, H. Tajima, Alain Bellerive, Marina Artuso, D. F. Cowen, E. R.F. Hyatt, M. Lattery, H. N. Nelson, Kenneth Bloom, B. Nemati, Ruifang Wang, G. C. Moneti, P. M. Patel, B. Gittelman, N. Kwak, R. Ehrlich, M. Bishai, M.A. Palmer, A. H. Mahmood, T. Bergfeld, S. L. Jones, D. Fujino, D. G. Cassel, N. Katayama, Daniel Johnson, G. Wei, M. Gao, I. J. Kim, J. J. O'Neill, F. R. Wappler, S. Menary, J. Dominick, D. J. Dumas, H. P. Paar, G. Eigen, Dave Britton, R. L. McIlwain, P. Skubic, R. Fulton, C. Qiao, Richard Wilson, G. Crawford, E. I. Shibata, H. Kagan, M. Sung, D. M. Coffman, V. Shelkov, S. Schrenk, B. K. Heltsley, Karl Berkelman, B. I. Eisenstein, E. Nordberg, Jeffrey Richman, Yurii V. Mukhin, D. L. Kreinick, B. Geiser, G. S. Ludwig, L. Gibbons, K. Lingel, J. K. Nelson, S. Roberts, B. Ong, M. Battle, R. Mountain, S. E. Csorna, M. Lohner, S. Nakanishi, E. H. Thorndike, Anders Ryd, S. Kotov, R. J. Morrison, M. Athanas, G. Zhu, Mats A Selen, J. Fast, A. J. Sadoff, K. Kinoshita, Christopher G. White, D. Coppage, J. P. Alexander, F. Butler, John Yelton, Pu Wang, M. Lambrecht, Jungil Lee, D. H. Miller, P. Gaidarev, X. Fu, M. Ogg, T. K. Nelson, J. Mevissen, M. M. Zoeller, J. Urheim, J. Kandaswamy, D. Peterson, A. Wolf, S. Sanghera, N. Hancock, W. R. Ross, I. Volobouev, K. Cho, N. B. Mistry, J. Masui, B. Spaan, Vivek Jain, C. D. Jones, C. R. Sun, W. T. Ford, M. Goldberg, R. D. Kass, R. Balest, Sheldon Stone, Paul Avery, Ha Lam, B. C. Barish, M. Procario, W. S. Brower, P. Pomianowski, Ilya Kravchenko, S. Salman, Michael Wood, J. W. Hinson, M. Modesitt, J. G. Smith, M. L. Kelly, and S. W. Gray
Subjects: Charmed baryons, Physics, Baryon, Particle physics, Electron–positron annihilation, Excited state, Isospin, General Physics and Astronomy, State (functional analysis), Atomic physics, Lambda
Abstract: Using data collected by the CLEO II detector, we have observed two states decaying to {Lambda}{sup +}{sub {ital c}}{pi}{sup +}{pi}{sup {minus}}. Relative to the {Lambda}{sup +}{sub {ital c}}, their mass splittings are measured to be +307.5{plus_minus}0.4{plus_minus}1.0 and +342.2{plus_minus}0.2{plus_minus}0.5MeV/{ital c}{sup 2}, respectively; this represents the first measurement of the less massive state. These two states are consistent with being orbitally excited, isospin zero {Lambda}{sup +}{sub {ital c}} states.
Published: 1995

209. First Observation of the DecayΞc+→Ξ0e+νeand an Estimate of theΞc+Ξc0Lifetime Ratio

Author: J. Mevissen, J. Kandaswamy, Alain Bellerive, K. Lingel, C. Qiao, D. Peterson, S. Sanghera, F. Butler, P. M. Patel, B. Ong, P. Zadorozhny, F. Muheim, S. E. Csorna, Alice Bean, R. Kutschke, N. Hancock, R. Malchow, John Yelton, M. Lambrecht, J. Fast, D. Fujino, J. J. O'Neill, Y. Kwon, S. Nakanishi, E. H. Thorndike, J. Masui, W. R. Ross, B. Spaan, Pu Wang, K. Kinoshita, Yurii V. Mukhin, D. Z. Besson, H. Kagan, Richard Wilson, Christopher G. White, J. K. Nelson, S. Playfer, D. Coppage, J. P. Alexander, G. C. Moneti, I. Volobouev, S. Kotov, R. Davis, George D Gollin, E. Gerndt, M. Ogg, Kenneth Bloom, K. W. Edwards, B. Nemati, N. Katayama, K. K. Gan, Y. Skovpen, Z. Ling, Z. Egyed, G. Eigen, A. H. Mahmood, I. P.J. Shipsey, E. I. Shibata, R. Mountain, R. Ammar, Shengfeng Yang, K. Honscheid, Vivek Jain, D. Riley, M. L. Kelly, D. Gibaut, B. Gittelman, C. R. Sun, W. T. Ford, M. S. Alam, H. Severini, S. Chan, D. Sperka, J. Bartelt, D. F. Cowen, D. H. Miller, Ruifang Wang, M. Gao, S. W. Gray, R. J. Morrison, Mats A Selen, R. D. Kass, H. P. Paar, P. Gaidarev, A. J. Sadoff, C. O'Grady, J. Ernst, T. Bergfeld, R. Balest, M. Modesitt, H. Tajima, G. Zhu, X. Fu, K. Cho, D. G. Cassel, E. R.F. Hyatt, M. Lattery, N. Copty, C. D. Jones, T. Liu, R. Fulton, Jungil Lee, N. B. Mistry, C. Bebek, Yuichi Kubota, D. S. Crowcroft, J. J. Thaler, F. Ẅrthwein, A. P. Freyberger, I. J. Kim, F. R. Wappler, N. Kwak, C. M. Daubenmier, Ryszard Stroynowski, T. Skwarnicki, J. G. Smith, M. Bishai, M. Goldberg, Sheldon Stone, T. Miao, Paul Avery, P. Rankin, P. C. Kim, M. Sung, E. Nordberg, Jeffrey Richman, M. Momayezi, M. Sapper, S. Menary, Dave Britton, R. L. McIlwain, Chunjie Wang, G. Crawford, W. S. Brower, B. I. Eisenstein, V. Shelkov, S. Schrenk, P. Pomianowski, G. S. Ludwig, Ha Lam, G. Wei, Ilya Kravchenko, S. Salman, Michael Wood, Maurice Garcia-Sciveres, B. Geiser, D. B. MacFarlane, B. C. Barish, A. J. Weinstein, H. N. Nelson, G. Masek, Marina Artuso, Juliet Ritchie Patterson, M. Lohner, P. S. Drell, D. He, Jorge Luis Rodriguez, M. Saulnier, D. Payne, H. A. Cho, T. E. Browder, D. L. Hartill, R. Poling, C. R. Ng, Michael S. Witherell, H. Yamamoto, P. Skubic, M.A. Palmer, Shawn W. Henderson, T. K. Nelson, M. M. Zoeller, J. Urheim, D. J. Dumas, Karl Berkelman, L. Gibbons, J. Gronberg, N. Horwitz, M. Chadha, Anders Ryd, M. Athanas, V. Savinov, Yoram Rozen, Philip Baringer, Xiangjun Xing, J. S. Miller, R. Ehrlich, S. L. Jones, J. Dominick, D. L. Kreinick, S. Roberts, M. Battle, D. M. Coffman, B. K. Heltsley, D. Cinabro, S. Patton, and Daniel Johnson
Subjects: Nuclear physics, Physics, Semileptonic decay, Crystallography, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Electron–positron annihilation, General Physics and Astronomy, Cornell Electron Storage Ring
Abstract: Using the CLEO II detector at the Cornell Electron Storage Ring we have observed the decay modes {Xi}{sup +}{sub {ital c}}{r_arrow}{Xi}{sup 0}{ital e}{sup +}{nu}{sub {ital e}} and {Xi}{sup 0}{sub {ital c}}{r_arrow}{Xi}{sup {minus}}{ital e}{sup +}{nu}{sub {ital e}} by the detection of a {Xi}-positron pair of appropriate invariant mass. We find {ital B} ({Xi}{sup +}{sub {ital c}}{r_arrow}{Xi}{sup 0}{ital e}{sup +}{nu}{sub {ital e}}){sigma}({ital e}{sup +}{ital e}{sup {minus}}{r_arrow} {Xi}{sup +}{sub {ital cX}})=1.55{plus_minus}0.33{plus_minus}0.25 pb, {ital B} ({Xi}{sup 0}{sub {ital c}}{r_arrow}{Xi}{sup {minus}}{ital e}{sup +}{nu}{sub {ital e}}){sigma}({ital e}{sup +}{ital e}{sup {minus}}{r_arrow} {Xi}{sup 0}{sub {ital cX}})=0.63{plus_minus}0.12{plus_minus}0.10 pb, {ital B} ({Xi}{sup +}{sub {ital c}}{r_arrow}{Xi}{sup {minus}}{pi}{sup +}{pi}{sup +})/ {ital B} ({Xi}{sup +}{sub {ital c}}{r_arrow}{Xi}{sup 0}{ital e}{sup +}{nu}{sub {ital e}})= 0.44{plus_minus}0.11{sub {minus}0.06}{sup +0.11}, and {ital B} ({Xi}{sup 0}{sub {ital c}}{r_arrow}{Xi}{sup {minus}}{pi}{sup +})/{ital B} ({Xi}{sup 0}{sub {ital c}}{r_arrow}{Xi}{sup {minus}}{ital e}{sup +}{nu}{sub {ital e}})= 0.32{plus_minus}0.10{sub {minus}0.03}{sup +0.05}. Assuming the {Xi}{sup +}{sub {ital c}} and {Xi}{sup 0}{sub {ital c}} are equally produced in {ital e}{sup +}{ital e}{sup {minus}} annihilation events at 10 GeV, the lifetime ratio of {Xi}{sup +}{sub {ital c}}/{Xi}{sup 0}{sub {ital c}} is measured to be 2.46{plus_minus}0.70{sub {minus}0.23}{sup +0.33}.
Published: 1995

210. Υ(1S)→γ+noninteracting particles

Author: R. Balest, K. Cho, T. Ford, D. R. Johnson, K. Lingel, M. Lohner, P. Rankin, J. G. Smith, J. P. Alexander, C. Bebek, K. Berkelman, K. Bloom, T. E. Browder, D. G. Cassel, H. A. Cho, D. M. Coffman, D. S. Crowcroft, P. S. Drell, D. Dumas, R. Ehrlich, P. Gaidarev, R. S. Galik, M. Garcia-Sciveres, B. Geiser, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, S. Henderson, C. D. Jones, S. L. Jones, J. Kandaswamy, N. Katayama, P. C. Kim, D. L. Kreinick, G. S. Ludwig, J. Masui, J. Mevissen, N. B. Mistry, C. R. Ng, E. Nordberg, J. R. Patterson, D. Peterson, D. Riley, S. Salman, M. Sapper, F. Würthwein, M. M. Urish, P. Avery, A. Freyberger, J. Rodriguez, S. Yang, J. Yelton, D. Cinabro, T. Liu, M. Saulnier, R. Wilson, H. Yamamoto, T. Bergfeld, B. I. Eisenstein, G. Gollin, B. Ong, M. Palmer, M. Selen, J. J. Thaler, K. W. Edwards, M. Ogg, A. Bellerive, D. I. Britton, E. R. F. Hyatt, D. B. MacFarlane, P. M. Patel, B. Spaan, A. J. Sadoff, R. Ammar, P. Baringer, A. Bean, D. Besson, D. Coppage, N. Copty, R. Davis, N. Hancock, M. Kelly, S. Kotov, I. Kravchenko, N. Kwak, H. Lam, Y. Kubota, M. Lattery, M. Momayezi, J. K. Nelson, S. Patton, R. Poling, V. Savinov, S. Schrenk, R. Wang, M. S. Alam, I. J. Kim, Z. Ling, A. H. Mahmood, J. J. O’Neill, H. Severini, C. R. Sun, F. Wappler, G. Crawford, C. M. Daubenmier, R. Fulton, D. Fujino, K. K. Gan, K. Honscheid, H. Kagan, R. Kass, J. Lee, R. Malchow, M. Sung, C. White, M. M. Zoeller, F. Butler, X. Fu, B. Nemati, W. R. Ross, P. Skubic, M. Wood, M. Bishai, J. Fast, E. Gerndt, R. L. McIlwain, T. Miao, D. H. Miller, M. Modesitt, D. Payne, E. I. Shibata, I. P. J. Shipsey, P. N. Wang, M. Battle, J. Ernst, L. Gibbons, Y. Kwon, S. Roberts, E. H. Thorndike, C. H. Wang, J. Dominick, M. Lambrecht, S. Sanghera, V. Shelkov, T. Skwarnicki, R. Stroynowski, I. Volobouev, G. Wei, P. Zadorozhny, M. Artuso, M. Gao, M. Goldberg, D. He, N. Horwitz, G. C. Moneti, R. Mountain, F. Muheim, Y. Mukhin, S. Playfer, Y. Rozen, S. Stone, X. Xing, G. Zhu, J. Bartelt, S. E. Csorna, Z. Egyed, V. Jain, D. Gibaut, K. Kinoshita, P. Pomianowski, B. Barish, M. Chadha, S. Chan, D. F. Cowen, G. Eigen, J. S. Miller, C. O’Grady, J. Urheim, A. J. Weinstein, M. Athanas, W. Brower, G. Masek, H. P. Paar, M. Sivertz, J. Gronberg, R. Kutschke, S. Menary, R. J. Morrison, S. Nakanishi, H. N. Nelson, T. K. Nelson, C. Qiao, J. D. Richman, A. Ryd, D. Sperka, H. Tajima, and M. S. Witherell
Subjects: Physics, Massless particle, Particle physics, Antiparticle, Meson, Antimatter, Hadron, High Energy Physics::Experiment, Elementary particle, Radioactive decay, Boson
Abstract: We consider the decay of [Upsilon](1[ital S]) particles produced at CESR into a photon which is observed by the CLEO detector plus particles which are not seen. These could be real particles which fall outside of our acceptance, or particles which are noninteracting. We report the results of our search fo the process [Upsilon](1[ital S])[r arrow][gamma]+ unseen'' for photon energies [gt]1 GeV, obtaining limits for the case where unseen'' is either a single particle or a particle-antiparticle pair. Our upper limits represent the highest sensitivity measurements for such decays to date.
Published: 1995

211. Measurement of theB¯→D*lν¯ branching fractions and ‖Vcb‖

Author: S. Playfer, C. D. Jones, C. M. Daubenmier, Ryszard Stroynowski, P. Rankin, Chunjie Wang, C. Qiao, J. Gronberg, N. Horwitz, M. Goldberg, M. Chadha, Shengfeng Yang, M. Modesitt, D. F. Cowen, D. L. Kreinick, H. P. Paar, R. Fulton, G. Masek, B. Ong, R. Kennett, B. Gittelman, T. Miao, N. Kwak, B. Nemati, D. Gibaut, Juliet Ritchie Patterson, S. Nakanishi, E. H. Thorndike, D. S. Crowcroft, I. J. Kim, F. R. Wappler, Pu Wang, E. Nordberg, Jeffrey Richman, S. Roberts, C. R. Sun, W. T. Ford, Kenneth Bloom, M. Battle, R. D. Kass, J. G. Smith, R. Ammar, T. Liu, C. Bebek, S. Sanghera, G. S. Ludwig, D. Coppage, J. P. Alexander, D. H. Miller, Ha Lam, K. Lingel, A. P. Freyberger, N. Copty, R. Balest, H. Severini, S. Chan, S. Menary, George R. Kalbfleisch, N. Hancock, G. C. Moneti, G. Vasseur, C. O'Grady, G. Crawford, P. Gaidarev, X. Fu, N. Katayama, G. Eigen, H. Kagan, Y. Kwon, M. Ogg, D. Z. Besson, R. S. Galik, J. J. Thaler, J. Urheim, Dave Britton, R. L. McIlwain, V. Shelkov, S. Schrenk, E. I. Shibata, D. M. Coffman, B. C. Barish, Karl Berkelman, J. Masui, B. Spaan, L. Gibbons, B. K. Heltsley, D. B. MacFarlane, M. Daoudi, R. Davis, J. Fast, J. K. Nelson, A. J. Weinstein, M. L. Kelly, G. Zhu, George D Gollin, K. K. Gan, M.A. Palmer, Vivek Jain, H. N. Nelson, S. W. Gray, Richard Wilson, M. Momayezi, Jungil Lee, Christopher G. White, Anders Ryd, M. Athanas, Y. Skovpen, R. J. Morrison, Mats A Selen, M. Sapper, R. Mountain, R. Ehrlich, B. Geiser, D. Cinabro, M. Procario, Sheldon Stone, D. He, M. Sung, A. J. Sadoff, S. Patton, Paul Avery, D. Payne, H. A. Cho, S. L. Jones, T. E. Browder, Alice Bean, J. Dominick, D. Acosta, Ilya Kravchenko, R. Kutschke, F. Butler, S. Salman, Michael Wood, M. S. Alam, Daniel Johnson, D. L. Hartill, J. S. Miller, T. Skwarnicki, K. W. Edwards, Z. Egyed, M. Thulasidas, R. Malchow, S. E. Csorna, H. Yamamoto, P. Skubic, John Yelton, M. Lambrecht, R. Poling, T. K. Nelson, M. Lohner, C. R. Ng, P. C. Kim, J. Ernst, Marina Artuso, S. Kotov, K. Kinoshita, D. Perticone, D. Sperka, V. Savinov, S. Henderson, Michael S. Witherell, M. M. Zoeller, K. Honscheid, Yoram Rozen, F. Würthwein, Alain Bellerive, E. R.F. Hyatt, M. Lattery, Philip Baringer, S. Ball, Xiangjun Xing, Ruifang Wang, G. Wei, P. M. Patel, T. Bergfeld, D. Riley, J. Bartelt, Maurice Garcia-Sciveres, P. S. Drell, Yuichi Kubota, Jorge Luis Rodriguez, M. Saulnier, D. G. Cassel, B. I. Eisenstein, Z. Ling, I. P.J. Shipsey, H. Tajima, D. Fujino, J. J. O'Neill, Yurii V. Mukhin, W. R. Ross, I. Volobouev, K. Cho, N. B. Mistry, J. Mevissen, J. Kandaswamy, D. Peterson, P. Zadorozhny, and F. Muheim
Subjects: Combinatorics, Semileptonic decay, Physics, Particle properties, Partial width, Branching fraction, B meson
Abstract: From this partial width we calculate [ital [bar B]][r arrow][ital D][sup *][ital l][bar [nu]] branching fractions that do not depend on [ital f][sub +[minus]]/[ital f][sub 00] or the individual [ital B] lifetimes, but only on the charged to neutral [ital B] lifetime ratio. The product of the CKM matrix element [vert bar][ital V][sub [ital c][ital b]][vert bar] times the normalization of the decay form factor at the point of no recoil of the [ital D][sup *] meson, [ital scrF]([ital y]=1), is determined from a linear fit to the combined differential decay rate of the exclusive [ital [bar B]][r arrow][ital D][sup *][ital l][bar [nu]] decays: [vert bar][ital V][sub [ital c][ital b]][vert bar][ital scrF](1)=0.0351[plus minus]0.0019 (stat) [plus minus]0.0018 (syst) [plus minus]0.0008 (lifetime). The value for [vert bar][ital V][sub [ital c][ital b]][vert bar] is extracted using theoretical calculations of the form factor normalization.
Published: 1995

212. Observation of B → ψπ decays

Author: B. Geiser, J. Gronberg, N. Horwitz, M. Lohner, T. Skwarnicki, M. Chadha, M. S. Alam, P. C. Kim, M. Sung, J. Ernst, J. Urheim, E. R.F. Hyatt, M. Lattery, J. Mevissen, Alain Bellerive, J. Kandaswamy, P. M. Patel, M. L. Kelly, S. E. Csorna, Sheldon Stone, D. G. Cassel, D. Peterson, Paul Avery, Anders Ryd, M. Athanas, S. W. Gray, T. Liu, K. Kinoshita, H. Kagan, P. S. Drell, C. Bebek, M. Modesitt, Jorge Luis Rodriguez, M. Saulnier, C. D. Jones, A. P. Freyberger, D. H. Miller, P. Zadorozhny, F. Muheim, P. Gaidarev, X. Fu, R. J. Morrison, Mats A Selen, A. J. Sadoff, B. I. Eisenstein, Richard Wilson, M. Gao, H. P. Paar, J. G. Smith, R. Davis, George D Gollin, D. J. Dumas, B. Nemati, D. Gibaut, K. Cho, T. K. Nelson, J. J. Thaler, B. Gittelman, C. M. Daubenmier, Ryszard Stroynowski, D. Cinabro, C. R. Sun, J. K. Nelson, W. T. Ford, Karl Berkelman, I. J. Kim, F. R. Wappler, N. B. Mistry, R. D. Kass, M. M. Zoeller, Marina Artuso, R. Fulton, R. Balest, S. Playfer, S. Nakanishi, D. S. Crowcroft, W. S. Brower, E. H. Thorndike, R. Mountain, S. Patton, S. Sanghera, Y. Skovpen, M. Momayezi, P. Rankin, M. Goldberg, W. R. Ross, P. Pomianowski, L. Gibbons, G. C. Moneti, G. Zhu, N. Kwak, D. Riley, N. Hancock, M. Sapper, Y. Kwon, M. Bishai, I. Volobouev, Ilya Kravchenko, S. Salman, D. Coppage, G. Crawford, Chunjie Wang, Michael Wood, E. Nordberg, Jeffrey Richman, Maurice Garcia-Sciveres, Daniel Johnson, D. Z. Besson, J. Bartelt, J. P. Alexander, F. Butler, E. I. Shibata, S. Menary, G. S. Ludwig, R. Malchow, K. Lingel, Dave Britton, R. L. McIlwain, Ha Lam, John Yelton, K. K. Gan, M. Lambrecht, M. Ogg, Shengfeng Yang, V. Shelkov, S. Schrenk, R. Ammar, Yuichi Kubota, H. Severini, A. H. Mahmood, D. F. Cowen, B. C. Barish, J. Masui, B. Spaan, Vivek Jain, Pu Wang, D. B. MacFarlane, C. Qiao, S. Chan, Jungil Lee, A. J. Weinstein, D. M. Coffman, C. O'Grady, H. N. Nelson, B. K. Heltsley, D. He, T. E. Browder, T. Miao, P. Skubic, D. Fujino, J. J. O'Neill, Shawn W. Henderson, Yurii V. Mukhin, Z. Ling, I. P.J. Shipsey, H. Tajima, E. Gerndt, K. W. Edwards, Z. Egyed, D. Sperka, Ruifang Wang, T. Bergfeld, M.A. Palmer, G. Wei, D. Payne, H. A. Cho, D. L. Hartill, B. Ong, R. Poling, C. R. Ng, Michael S. Witherell, H. Yamamoto, G. Masek, J. Fast, Juliet Ritchie Patterson, Christopher G. White, K. Honscheid, N. Copty, V. Savinov, Yoram Rozen, F. Würthwein, Philip Baringer, Xiangjun Xing, D. L. Kreinick, S. Roberts, M. Battle, R. Ehrlich, S. L. Jones, J. Dominick, J. S. Miller, Alice Bean, R. Kutschke, Kenneth Bloom, N. Katayama, G. Eigen, and S. Kotov
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Branching fraction, Detector, Cornell Electron Storage Ring
Abstract: We have found the first evidence for the Cabibbo suppressed, color suppressed decay B − → ψπ − in a data sample of 4 million B decays obtained by the CLEO detector at the Cornell Electron Storage Ring (CESR). The branching ratio is found to be (4.3±2.3)% of the Cabibbo allowed B − → ψK − decay mode, which is consistent with theoretical expectations.
Published: 1995

213. Study ofψ(3686)→π0hc,hc→γηcviaηcexclusive decays

Author: I. Tapan, P. L. Wang, J. F. Sun, X. L. Luo, S. L. Li, Y. H. Yan, J. W. Zhao, Y. Zeng, D. Cronin-Hennessy, Y. C. Zhu, Z. Ning, Zhe Sun, X. T. Liao, J. Z. Bai, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, X. Tang, T. Held, A. Calcaterra, Z. G. Zhao, H. H. Zhang, Z. J. Sun, H. Loehner, Y. P. Chu, X. P. Xu, X. B. Ji, G. A. Chelkov, G. X. Sun, J. V. Bennett, Li Yan, Z. Jiao, D. H. Zhang, Krisztian Peters, M. Z. Wang, C. S. Ji, H. Liang, X. N. Li, Q. P. Ji, I. R. Boyko, S. H. Zhang, X. Y. Shen, Y. Ding, K. Goetzen, L. H. Wu, B. J. Liu, G. R. Lu, Z. A. Zhu, D. H. Sun, C. P. Shen, Q. A. Malik, Zhiqiang Liu, Miao He, C. Nicholson, F. Li, F. C. Ma, Shan Wang, G. S. Huang, W. Kuehn, M. N. Achasov, L. P. Zhou, H. B. Li, C. L. Luo, Guofa Xu, K. J. Zhu, Xuantong Zhang, Z. Zhong, M. G. Zhao, Y. H. Yang, D. J. Ambrose, Haiping Peng, Dan Wang, Ke Wang, Y. M. Ma, Z. P. Mao, Fang Liu, U. Wiedner, H. P. Cheng, S. Qian, Q. An, Jialun Ping, Y. H. Guan, H. J. Lu, J. G. Lu, B. Spruck, E. H. Thorndike, J. Fang, G. S. Varner, C. C. Zhang, B. Zhong, L. B. Guo, Xiao-Tong Lu, M. Ullrich, Z. J. Xiao, I. B. Nikolaev, I. Denysenko, X. Y. Zhang, Hang Liu, M. Bertani, J. F. Qiu, F. E. Maas, Zhiqing Liu, N. Wu, L. Fava, Lei Li, H. L. Ma, F. Feldbauer, B. Y. Zhang, X. H. Liu, T. Hu, C. Motzko, D. M. Li, J. M. Bian, S. J. Zhao, J. F. Chang, H. Muramatsu, E. Prencipe, M. Shao, Y. T. Gu, W. Lai, M. Greco, Jie Yu, Shou-hua Zhu, X. L. Li, R. Poling, V. V. Bytev, Y. J. Sun, E. Boger, T. Ma, Feng Liu, Q Zhao, Chang Liu, W. G. Li, A. G. Denig, M. Pelizaeus, M. Ablikim, Zujian Wang, Yanping Huang, W. D. Li, Julian Schulze, X. R. Li, Cen Zhang, Joong-Won Park, Fenfen An, Michael Werner, S. B. Liu, Q. J. Xu, G. R. Liao, J. P. Dai, H. H. Liu, J. C. Li, Y. Q. Wang, B. S. Zou, T. J. Min, Feng Xue, Cui Li, B. D. Schaefer, X. Cai, Y. Nefedov, Guangming Huang, J. C. Chen, B. Q. Wang, T. C. Zhao, J. Zhuang, X. T. Huang, X. H. Zhao, Qi-Wen Lü, S. Spataro, Q. J. Li, C. Zhu, M. X. Luo, W. B. Yan, Yu Zhang, Z. Wu, G. Rong, X. C. Chen, C. L. Ma, Nasser Kalantar-Nayestanaki, C. Morales Morales, Jian Wei, Y. F. Liang, D. V. Dedovich, Y. N. Gao, Y. B. Zhao, Y. Zhang, D. P. Jin, H. M. Liu, F. A. Harris, A. A. Zafar, Wei Wu, Rinaldo Baldini Ferroli, Q. L. Xiu, Peilian Liu, S. Pacetti, Z. P. Zhang, Z. G. Wang, H. Y. Zhang, G. F. Cao, K. H. Rashid, X. L. Ji, S. P. Yu, Y. X. Yang, W. Gradl, M. Maggiora, Ling Zhao, D. Y. Wang, O. Bondarenko, Qun-Yao Wang, Y. P. Guo, G. Li, H. W. Yu, G. F. Chen, Y. J. Mao, Yao Wang, H. X. Yang, H.S. Xu, Zhenli Xu, Y. T. Liang, M. R. Shepherd, C. J. Tang, L. L. Jiang, X. L. Wang, Lei Zhao, Z. Y. He, J. Y. Zhang, Tao Luo, Z. L. Hou, J. Min, Q. Zhao, S. J. Chen, H. B. Liu, Y. P. Lu, Y. L. Han, F. F. Jing, Kai Liu, Y. Z. Sun, K. J. Li, Z. Y. Zhang, C. D. Fu, Y. K. Heng, C. Q. Feng, Serkant Ali Cetin, Q. Ouyang, M. L. Chen, Gang Zhao, Alexey Zhemchugov, H. M. Hu, K. L. He, J. P. Liu, C. Geng, J. Q. Zhang, S. S. Fang, J. G. Messchendorp, B. X. Yu, A. Sarantsev, D. H. Wei, J. S. Lange, Q. Liu, Z. Y. Deng, Xichao Ruan, Y. B. Liu, J. B. Jiao, C. Z. Yuan, F. H. Liu, J. W. Zhang, A. Q. Guo, M. Y. Dong, M. H. Gu, A. Zallo, M. Qi, HongSheng Zhao, Q. J. Wang, S. Ma, D. Toth, M. H. Ye, H. Y. Sheng, M. Kavatsyuk, J. Zhong, Y. G. Xie, C. X. Yu, Jianping Zheng, H. S. Chen, L. G. Xia, J. H. Zou, Z. H. Qin, B. X. Zhang, B. Zheng, R. G. Ping, Chuan Liu, H. L. Dai, M. Lv, S. X. Du, Z. A. Liu, L. Y. Dong, S. S. Sun, Y. Ban, P. Weidenkaff, K. Y. Liu, Z. Xue, S. P. Wen, X. S. Qin, X. R. Zhou, M. Destefanis, J. L. Fu, Y. M. Zhu, Y. H. Zheng, Cong-Feng Qiao, Cheng Li, Yang Qin, O. Albayrak, Jürgen Becker, Sanfeng Wu, X. K. Zhou, N. Yu. Muchnoi, Heng-Yun Ye, Y. H. Zhang, W. M. Ding, S. L. Olsen, Q. G. Wen, J. S. Huang, R. E. Mitchell, Z. Y. Wang, C. X. Liu, X. H. Mo, L. S. Wang, L. L. Wang, G. F. Xu, S. Jin, X. Y. Song, Q. M. Ma, Y. Yuan, Y. S. Zhu, X. Q. Li, K. X. Zhao, Z. B. Li, Y. F. Wang, T. Hussain, X. Y. Ma, W. X. Gong, C. H. Li, R. A. Briere, X. S. Jiang, and O. Cakir
Subjects: Physics, Nuclear and High Energy Physics, Crystallography, Hadron, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The process $\ensuremath{\psi}(3686)\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{h}_{c}$, ${h}_{c}\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\eta}}_{c}$ has been studied with a data sample of $106\ifmmode\pm\else\textpm\fi{}4$ million $\ensuremath{\psi}(3686)$ events collected with the BESIII detector at the BEPCII storage ring. The mass and width of the $P$-wave charmonium spin-singlet state ${h}_{c}(^{1}P_{1})$ are determined by simultaneously fitting distributions of the ${\ensuremath{\pi}}^{0}$ recoil mass for 16 exclusive ${\ensuremath{\eta}}_{c}$ decay modes. The results, $M({h}_{c})=3525.31\ifmmode\pm\else\textpm\fi{}0.11(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.14(\mathrm{syst})\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ and $\ensuremath{\Gamma}({h}_{c})=0.70\ifmmode\pm\else\textpm\fi{}0.28\ifmmode\pm\else\textpm\fi{}0.22\text{ }\text{ }\mathrm{MeV}$, are consistent with and more precise than previous measurements. We also determine the branching ratios for the 16 exclusive ${\ensuremath{\eta}}_{c}$ decay modes, five of which have not been measured previously. New measurements of the ${\ensuremath{\eta}}_{c}$ line-shape parameters in the $E1$ transition ${h}_{c}\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\eta}}_{c}$ are made by selecting candidates in the ${h}_{c}$ signal sample and simultaneously fitting the hadronic mass spectra for the 16 ${\ensuremath{\eta}}_{c}$ decay channels. The resulting ${\ensuremath{\eta}}_{c}$ mass and width values are $M({\ensuremath{\eta}}_{c})=2984.49\ifmmode\pm\else\textpm\fi{}1.16\ifmmode\pm\else\textpm\fi{}0.52\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ and $\ensuremath{\Gamma}({\ensuremath{\eta}}_{c})=36.4\ifmmode\pm\else\textpm\fi{}3.2\ifmmode\pm\else\textpm\fi{}1.7\text{ }\text{ }\mathrm{MeV}$.
Published: 2012

214. Precision measurements of branching fractions forψ′→π0J/ψandηJ/ψ

Author: K. Goetzen, W. Kuehn, Changjin Zhang, M. Y. Dong, Yao Wang, J. H. Zou, S. S. Sun, Y. T. Liang, Jürgen Becker, S. Ma, J. F. Sun, R. E. Mitchell, Z. B. Li, D. Toth, M. H. Ye, Y. Zeng, Zhe Sun, M. Kavatsyuk, Sanfeng Wu, J. S. Huang, C. X. Liu, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, B. X. Zhang, G. F. Xu, S. Jin, X. Y. Song, W. B. Yan, M. N. Achasov, Shou-hua Zhu, Jie Yu, H. B. Li, Zhiqing Liu, H. X. Yang, H.S. Xu, S. Pacetti, F. Feldbauer, Feng Liu, Chang Liu, K. Li, X. Q. Li, Y. J. Mao, Fang Liu, J. B. Jiao, I. Denysenko, L. Y. Dong, T. J. Min, K. J. Zhu, B. D. Schaefer, B. Y. Zhang, J. F. Chang, Q. A. Malik, M. Greco, A. G. Denig, N. Wu, C. L. Luo, Krisztian Peters, X. L. Ji, G. R. Liao, J. Min, J. Zhong, Ke Wang, I. Tapan, S. L. Li, H. H. Zhang, G. A. Chelkov, B. S. Zou, B. Q. Wang, X. Cai, C. P. Shen, J. P. Liu, H. B. Liu, S. P. Yu, X. R. Li, Y. H. Yan, Zhiqiang Liu, Miao He, J. W. Zhao, Zujian Wang, C. C. Zhang, Y. S. Zhang, B. Zhong, L. B. Guo, Lei Li, J. G. Messchendorp, W. M. Ding, Qun-Yao Wang, F. F. Jing, Talib Hussain, Y. H. Guan, G. Li, Y. Zhang, M. Maggiora, Ling Zhao, Q. An, G. S. Huang, Jifeng Hu, L. P. Zhou, D. Cronin-Hennessy, Y. C. Zhu, K. Y. Liu, K. L. He, B. Spruck, K. X. Zhao, X. H. Zhao, Y. M. Ma, Z. P. Mao, Y. Nefedov, Z. Y. He, Z. L. Hou, J. B. Wei, P. L. Wang, W. G. Li, S. Qian, Jialun Ping, Yang Yang, I. B. Nikolaev, Ulrich Wiedner, Y. L. Han, C. D. Fu, C. Q. Feng, Wei Wu, L. L. Jiang, K. H. Rashid, X. Y. Zhang, Qi-Wen Lü, H. P. Cheng, D. Y. Wang, Q. Ouyang, Q. M. Ma, J. Fang, R. Poling, V. V. Bytev, M. Shao, Y. T. Gu, E. Boger, Y. J. Sun, S. Spataro, X. P. Xu, C. Zhu, Y. X. Yang, Y. F. Wang, Q. J. Li, T. Ma, Z. Y. Deng, Qian Liu, G. M. Xu, Fenfen An, Yanping Huang, C. Z. Yuan, HongSheng Zhao, Q. J. Wang, S. S. Fang, M. R. Shepherd, F. A. Harris, Y. Yuan, Y. S. Zhu, Xingguo Li, Jianping Zheng, T. Held, Z. Ning, M. Bertani, Xiangdong Ruan, H. M. Liu, Lei Zhao, Q. Zhao, Zhiyong Zhang, A. Sarantsev, D. H. Wei, J. S. Lange, D. J. Ambrose, Y. B. Liu, Y. Z. Sun, M. H. Gu, R. B. Ferroli, H. Y. Sheng, C. X. Yu, A. Calcaterra, C. S. Ji, G. X. Sun, Li Yan, T. C. Zhao, X. Liu, Z. J. Xiao, L. G. Xia, M. Lv, Z. Xue, Z. G. Zhao, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Y. B. Zhao, J. Z. Bai, G. F. Cao, X. K. Zhou, F. Li, F. C. Ma, Y. P. Guo, Serkant Ali Cetin, A. Q. Guo, X. Y. Ma, M. Kornicer, Y. G. Xie, M. Destefanis, J. Q. Zhang, H. Liang, Q. P. Ji, W. X. Gong, Tao Luo, Gang Zhao, B. Zheng, R. G. Ping, X. Tang, E. Prencipe, H. H. Liu, Xiao-Tong Lu, X. L. Luo, J. F. Qiu, Qiang Zhao, W. Gradl, F. Coccetti, Y. P. Chu, X. B. Ji, Z. J. Sun, H. Loehner, C. J. Tang, Z. A. Liu, Hao-Ran Yu, Y. P. Lu, Kai Liu, Y. M. Zhu, H. L. Ma, L. Fava, H. J. Lu, J. G. Lu, D. M. Li, X. H. Mo, L. S. Wang, W. D. Li, C. H. Li, H. Muramatsu, M. Qi, Z. H. Qin, J. C. Li, M. Pelizaeus, S. X. Du, Xuantong Zhang, A. Zallo, J. V. Bennett, C. Motzko, B. X. Yu, E. H. Thorndike, L. L. Wang, Chuan Liu, F. E. Maas, Feng Xue, Cui Li, J. Zhuang, T. Hu, Julian Schulze, Yang Qin, Y. Ban, P. Weidenkaff, M. X. Luo, S. P. Wen, X. S. Qin, J. P. Dai, Joong-Won Park, X. R. Zhou, C. L. Ma, B. Wang, H. S. Chen, D. V. Dedovich, Shujun Zhao, Michael Werner, J. L. Fu, Cheng Li, C. Geng, S. L. Olsen, R. A. Briere, Shan Wang, H. L. Dai, Igor Boyko, Guangming Huang, S. B. Liu, Zhenli Xu, X. S. Jiang, Alexey Zhemchugov, H. M. Hu, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, Z. Wu, J. W. Zhang, Q. L. Xiu, Meng Wang, N. Yu. Muchnoi, X. T. Liao, Heng-Yun Ye, Y. H. Zhang, G. S. Varner, O. Cakir, Hang Liu, Q. G. Wen, Z. Y. Wang, Q. J. Xu, X. N. Li, Haiping Peng, Z. Zhong, M. G. Zhao, Z. G. Wang, Y. F. Liang, H. Y. Zhang, D. P. Jin, S. H. Zhang, X. Y. Shen, Y. Ding, G. F. Chen, B. J. Liu, J. Y. Zhang, G. R. Lu, Xian Chen, Dayong Wang, Z. A. Zhu, P. L. Liu, D. H. Sun, Y. K. Heng, L. H. Wu, X. L. Wang, J. M. Bian, Zhenyu Zhang, W. Lai, Y.N. Gao, J. C. Chen, Nasser Kalantar-Nayestanaki, M. L. Chen, C. Morales Morales, C. Nicholson, Y. Q. Wang, X. T. Huang, M. Ablikim, A. A. Zafar, G. Rong, M. Ullrich, S. J. Chen, and O. Bondarenko
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Branching fraction, Electron–positron annihilation, Pi, High Energy Physics::Experiment, Nuclear Experiment, Branching (polymer chemistry)
Abstract: We present a precision study of the psi' -> pi(0)J/Psi and eta J/Psi decay modes. The measurements are obtained using 106 x 10(6) psi' events accumulated with the BESIII detector at the BEPCII e(+)e(-) collider operating at a center-of-mass energy corresponding to the psi' mass. We obtain B(psi' -> pi(0)J/Psi) = (1.26 +/- 0.02(stat) +/- 0.03(syst)) x 10(-3) and B(psi' -> eta J/Psi) = (33.75 +/- 0.17(stat) +/- 0.86(syst)) x 10(-3). The branching fraction ratio R = B(psi'->pi(0)J/psi)/B(psi'->eta J/psi) is determined to be (3.74 +/- 0.06(stat) +/- 0.04(syst)) x 10(-2). The precision of these measurements of B(Psi' -> pi(0)J/Psi) and R represent a significant improvement over previously published values.
Published: 2012

215. Experimental study ofψ′decays toK+K−π0andK+K−η

Author: C. S. Ji, Xiangdong Ruan, H. Liang, M. Y. Dong, Q. P. Ji, L. G. Xia, J. H. Zou, M. Qi, S. S. Sun, Xiao-Tong Lu, J. M. Bian, L. Y. Dong, L. H. Wu, Jürgen Becker, Z. Ning, X. L. Ji, S. P. Yu, G. A. Chelkov, J. B. Jiao, Zhenyu Zhang, W. Lai, R. E. Mitchell, Shan Wang, Talib Hussain, G. S. Varner, Hang Liu, Y. G. Xie, Y. F. Wang, H. L. Ma, M. H. Gu, S. X. Du, J. Zhong, J. C. Chen, Y.N. Gao, Q. L. Xiu, J. Z. Bai, H. Y. Sheng, D. M. Li, H. Muramatsu, Y. H. Zheng, S. B. Liu, C. X. Yu, X. Y. Ma, W. X. Gong, Cong-Feng Qiao, O. Albayrak, Meng Wang, W. M. Ding, X. K. Zhou, Zhiqiang Liu, Miao He, N. Yu. Muchnoi, Nasser Kalantar-Nayestanaki, C. Morales Morales, B. Zheng, R. G. Ping, H. H. Zhang, L. P. Zhou, Heng-Yun Ye, Y. H. Zhang, Y. M. Ma, Yingchun Zhu, G. R. Liao, Q. G. Wen, C. H. Li, I. B. Nikolaev, K. H. Rashid, M. Bertani, Zhiqing Liu, Z. A. Liu, Z. P. Mao, S. X. Wu, H. J. Lu, M. Shao, Y. T. Gu, W. B. Yan, Y. X. Yang, Y. P. Chu, X. B. Ji, H. P. Cheng, J. Fang, Y. Nefedov, F. F. Jing, Z. Y. Wang, J. G. Lu, F. Li, M. N. Achasov, E. H. Thorndike, Y. Ban, P. Weidenkaff, J. F. Chang, S. Qian, Jialun Ping, Q. Ouyang, Q. J. Li, Y. T. Liang, Y. H. Guan, S. P. Wen, S. S. Fang, X. Tang, Q. M. Ma, M. R. Shepherd, S. Pacetti, Y. B. Zhao, N. Wu, Krisztian Peters, Y. B. Liu, X. Y. Zhang, X. S. Qin, X. R. Zhou, J. P. Dai, F. C. Ma, J. L. Fu, X. Cai, Feng Liu, P. L. Wang, Z. Zhong, M. G. Zhao, Y. Q. Wang, S. H. Zhang, M. Greco, X. Y. Shen, A. Sarantsev, Cheng Li, Shou-hua Zhu, M. Maggiora, Ling Zhao, C. L. Ma, Qian Liu, Rinaldo Baldini Ferroli, X. T. Huang, M. Ablikim, Q. Zhao, X. L. Luo, D. H. Wei, Y. Z. Sun, J. S. Lange, W. Gradl, Lei Zhao, Z. Y. He, Z. L. Hou, F. E. Maas, Y. Yuan, Y. J. Sun, E. Boger, Y. S. Zhu, Y. Ding, A. A. Zafar, Z. G. Wang, H. Y. Zhang, Z. B. Li, B. J. Liu, K. Y. Liu, K. X. Zhao, G. Rong, Yang Yang, C. Geng, Jie Yu, G. F. Chen, J. F. Qiu, K. Li, T. Hu, G. R. Lu, Fang Liu, J. Min, B. S. Zou, Z. A. Zhu, L. Fava, H. B. Liu, S. L. Olsen, R. A. Briere, J. Y. Zhang, Qiang Zhao, X. S. Jiang, G. M. Xu, I. Denysenko, X. H. Mo, L. S. Wang, M. Kavatsyuk, C. J. Tang, D. H. Sun, Gang Zhao, T. J. Min, K. J. Zhu, B. D. Schaefer, Y. J. Mao, Y. K. Heng, M. H. Ye, A. Zallo, Zhiyong Zhang, C. Z. Yuan, K. L. He, Y. S. Zhang, L. L. Jiang, Qun-Yao Wang, B. Wang, Michael Werner, B. Y. Zhang, X. Liu, Xuantong Zhang, Y. P. Lu, O. Cakir, Z. J. Xiao, Yang Qin, Y. P. Guo, L. L. Wang, Serkant Ali Cetin, S. J. Chen, B. X. Zhang, Q. A. Malik, F. A. Harris, Guangming Huang, G. Li, O. Bondarenko, Y. Zhang, Q. An, Z. Wu, C. D. Fu, C. Q. Feng, Wei Wu, A. Zhemchugov, Z. Y. Deng, Xingguo Li, B. Q. Wang, Y. L. Han, HongSheng Zhao, Q. J. Wang, R. Poling, Jianping Zheng, M. Lv, Z. Xue, M. Destefanis, C. P. Shen, F. Feldbauer, Chang Liu, J. Q. Zhang, I. Tapan, S. L. Li, Y. H. Yan, J. W. Zhao, H. M. Hu, Zujian Wang, D. Cronin-Hennessy, Changjin Zhang, J. W. Zhang, Yao Wang, T. Held, Xiang Li, B. Spruck, X. H. Zhao, D. J. Ambrose, Y. M. Zhu, J. F. Sun, Y. Zeng, Zhe Sun, E. Prencipe, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, G. X. Sun, Li Yan, W. D. Li, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Feng Xue, Cui Li, Y. F. Liang, D. P. Jin, P. L. Liu, H. B. Li, C. Nicholson, A. G. Denig, C. L. Luo, M. Ullrich, H. X. Yang, H.S. Xu, C. C. Zhang, B. Zhong, L. B. Guo, X. L. Wang, Huihui Liu, J. P. Liu, M. L. Chen, Lei Li, J. G. Messchendorp, Ulrich Wiedner, G. S. Huang, A. Q. Guo, T. Ma, Yanping Huang, J. C. Li, J. Zhuang, M. X. Luo, D. V. Dedovich, Z. H. Qin, Chuan Liu, W. G. Li, S. Spataro, X. P. Xu, C. Zhu, Zhenli Xu, K. Goetzen, W. Kuehn, H. M. Liu, G. F. Cao, Z. G. Zhao, Tao Luo, J. V. Bennett, Z. J. Sun, B. X. Yu, H. Loehner, S. Ma, X. R. Li, D. Toth, H. S. Chen, Kai Liu, J. S. Huang, Shujun Zhao, H. L. Dai, Igor Boyko, C. X. Liu, Ke Wang, G. F. Xu, M. Pelizaeus, S. Jin, C. Motzko, V. V. Bytev, Julian Schulze, Joong-Won Park, X. Y. Song, Fenfen An, T. C. Zhao, Qi-Wen Lü, X. T. Liao, Q. J. Xu, X. N. Li, Haiping Peng, and A. Calcaterra
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Branching fraction, law, Electron–positron annihilation, Quantum mechanics, Pi, Analytical chemistry, High Energy Physics::Experiment, Collider, Helicity, law.invention
Abstract: Using (106 +/- 4) x 10(6) psi ' events accumulated with the BESIII detector at the BEPCII e(+)e(-) collider, we present measurements of the branching fractions for psi' decays to K+K- pi(0) and K+K- eta. In these final states, the decay psi' -> K-2(*) (1430)(+) K- + 10(-5), is observed for the first time, and its branching fraction is measured to be (7.12 +/- 0: 62(stat)(-0.61)(+1.13) (syst)) x 10(-5), which indicates a violation of the helicity selection rule in psi' decays. The branching fractions of psi' -> K* (892)(+) K- + c.c., phi eta, and phi pi(0) are also measured. The measurements are used to test the QCD predictions on charmonium decays.
Published: 2012

216. Observation of the Dalitz decayDs*+→Ds+e+e−

Author: S. Blusk, H. Mendez, D. Peterson, E. H. Thorndike, G. S. Adams, S. W. Gray, Karl Matthew Ecklund, Jonas Rademacker, Hans J. Vogel, Jing Wang, A. Powell, M. Kornicer, G. Bonvicini, J. P. Alexander, C. M. Tarbert, P. Rubin, D. H. Miller, R. A. Briere, Z. Metreveli, C. Thomas, Mark Smith, Peter Onyisi, G. Wilkinson, Souvik Das, Sean A Dobbs, Ping Zhou, I. P.J. Shipsey, D. Hu, D. L. Kreinick, K. Randrianarivony, S. Mehrabyan, A. J. Sadoff, Ting Xiao, H. Muramatsu, B. Xin, P. Naik, D. Z. Besson, C. S. Park, Anders Ryd, D. Cronin-Hennessy, L. K. Gibbons, M. R. Shepherd, Juliet Ritchie Patterson, L. J. Pearson, T. K. Pedlar, K. K. Seth, D. L. Hartill, L. Martin, Sheldon Stone, R. Ehrlich, J. Napolitano, Amiran Tomaradze, Marina Artuso, B. K. Heltsley, J. Zhu, S. Ricciardi, D. Riley, Mats A Selen, Jonathan L. Rosner, Tomasz Skwarnicki, John Yelton, J. Hietala, B. Moziak, D. G. Cassel, A. Lincoln, N. Lowrey, D. Cinabro, J. Insler, J. Libby, G. Tatishvili, Werner Sun, Lei Zhang, J. Y. Ge, James E Wiss, R. E. Mitchell, Xin Shi, V. E. Kuznetsov, K. W. Edwards, R. Mountain, and D. M. Asner
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, 0103 physical sciences, Statistical physics, Cornell Electron Storage Ring, 010306 general physics, 01 natural sciences
Abstract: Using 586 $\textrm{pb}^{-1}$ of $e^{+}e^{-}$ collision data acquired at $\sqrt{s}=4.170$ GeV with the CLEO-c detector at the Cornell Electron Storage Ring, we report the first observation of $D_{s}^{*+} \to D_{s}^{+} e^{+} e^{-}$ with a significance of $5.3 \sigma$. The ratio of branching fractions $\calB(D_{s}^{*+} \to D_{s}^{+} e^{+} e^{-}) / \calB(D_{s}^{*+} \to D_{s}^{+} \gamma)$ is measured to be $[ 0.72^{+0.15}_{-0.13} (\textrm{stat}) \pm 0.10 (\textrm{syst})]%$, which is consistent with theoretical expectations.
Published: 2012

217. Observation ofe+e−→ηJ/ψat center-of-mass energys=4.009 GeV

Author: A. Zallo, K. Li, J. F. Sun, Yang Qin, Fang Liu, Shan Wang, Y. Zeng, I. Denysenko, Zhe Sun, Yao Wang, Xiao-Tong Lu, G. S. Varner, Y. B. Chen, B. Y. Zhang, Xiaofeng Zhu, J. Z. Zhang, Hang Liu, Xiang Li, I. Tapan, P. L. Wang, I. B. Nikolaev, X. L. Luo, A. Calcaterra, S. L. Li, Y. H. Yan, C. S. Ji, J. W. Zhao, D. Cronin-Hennessy, H. Liang, G. R. Liao, F. F. Jing, Y. M. Zhu, Q. Ouyang, S. S. Fang, Y. B. Liu, T. Held, H. L. Ma, D. M. Li, F. Feldbauer, Chang Liu, Xiangdong Ruan, K. H. Rashid, S. J. Chen, O. Bondarenko, Yingchun Zhu, A. Q. Guo, W. B. Yan, Z. G. Zhao, M. Shao, Y. T. Gu, H. Muramatsu, Ke Wang, Q. L. Xiu, M. Pelizaeus, X. L. Ji, W. M. Song, L. G. Xia, H. H. Zhang, S. Pacetti, Z. J. Sun, H. Loehner, S. P. Yu, G. A. Chelkov, Talib Hussain, D. J. Ambrose, Y. Nefedov, V. V. Bytev, Fenfen An, Y. T. Liang, Zujian Wang, Y. H. Guan, Q. J. Li, H. M. Hu, Q. P. Ji, N. Wu, Krisztian Peters, H. B. Li, A. G. Denig, C. L. Luo, T. C. Zhao, E. Prencipe, M. Maggiora, Ling Zhao, Z. B. Li, Y. F. Wang, G. Li, J. W. Zhang, Feng Liu, W. D. Li, J. Q. Zhang, C. C. Zhang, M. Y. Dong, Z. Ning, B. Zhong, L. B. Guo, X. T. Liao, S. H. Zhang, X. Y. Shen, Y. Q. Wang, M. Kavatsyuk, Lei Li, Lei Zhao, Z. Y. He, Z. L. Hou, Yang Yang, Z. H. Qin, Qian Liu, Feng Xue, Cui Li, Ulrich Wiedner, Y. Ding, M. G. Zhao, X. T. Huang, M. Ablikim, Y. G. Xie, A. A. Zafar, Q. J. Xu, Z. H. An, G. Rong, B. Q. Wang, A. Sarantsev, S. X. Du, Chuan Liu, Qun-Yao Wang, B. J. Liu, J. H. Zou, G. M. Xu, T. Ma, Yanping Huang, C. D. Fu, C. Q. Feng, D. H. Wei, C. P. Shen, Q. M. Ma, B. X. Zhang, H. J. Lu, J. G. Lu, R. B. Ferroli, W. G. Li, H. H. Liu, B. Spruck, C. Z. Yuan, S. S. Sun, X. N. Li, G. R. Lu, J. C. Li, J. S. Lange, Z. Y. Deng, Y. Yuan, Y. S. Zhu, Z. A. Liu, Haiping Peng, X. H. Zhao, J. Zhuang, Tao Luo, X. Tang, J. V. Bennett, M. X. Luo, Z. A. Zhu, X. Y. Ma, W. X. Gong, D. V. Dedovich, B. X. Yu, Y. Ban, Jürgen Becker, L. H. Wu, P. Weidenkaff, M. H. Ye, S. Spataro, X. P. Xu, F. E. Maas, T. Hu, D. H. Sun, Xingguo Li, C. Zhu, J. M. Bian, R. E. Mitchell, H. S. Chen, Kai Liu, Zhenli Xu, Y. J. Mao, Shujun Zhao, Y.N. Gao, Zhenyu Zhang, S. P. Wen, W. Lai, H. L. Dai, Igor Boyko, X. S. Qin, X. R. Zhou, Shou-hua Zhu, H. M. Liu, X. L. Wang, J. Z. Bai, J. L. Fu, J. F. Hu, Cheng Li, B. Wang, Michael Werner, Guangming Huang, G. F. Cao, H. X. Yang, H.S. Xu, Y. P. Chu, G. X. Sun, X. B. Ji, Li Yan, Z. Jiao, Fu-Hu Liu, C. H. Li, M. H. Gu, D. H. Zhang, L. Y. Dong, Z. Wu, Y. B. Zhao, X. K. Zhou, Huihui Liu, J. P. Liu, H. Y. Sheng, J. C. Chen, C. X. Yu, C. J. Tang, B. S. Zou, Y. P. Lu, J. G. Messchendorp, Jie Yu, Nasser Kalantar-Nayestanaki, B. Zheng, R. G. Ping, S. Qian, Jialun Ping, T. J. Min, K. J. Zhu, B. D. Schaefer, Y. Zhang, Q. An, M. Greco, Zhiqiang Liu, Miao He, C. Morales Morales, Wei Wu, A. Zhemchugov, M. L. Chen, L. L. Wang, M. N. Achasov, L. P. Zhou, X. Y. Zhang, Y. X. Yang, W. M. Ding, Y. M. Ma, Z. P. Mao, S. X. Wu, M. R. Shepherd, Z. G. Wang, K. Y. Liu, H. Y. Zhang, Q. Zhao, Y. Z. Sun, H. P. Cheng, K. X. Zhao, J. Fang, Zhiqing Liu, G. F. Chen, Gang Zhao, S. L. Olsen, R. A. Briere, C. Nicholson, J. Y. Zhang, X. S. Jiang, J. F. Chang, M. Ullrich, O. Cakir, X. Cai, X. H. Mo, L. S. Wang, Y. K. Heng, Xuantong Zhang, Y. J. Sun, E. Boger, Y. L. Han, Y. F. Liang, HongSheng Zhao, Q. J. Wang, R. Poling, Jianping Zheng, D. P. Jin, Y. S. Zhang, M. Lv, Z. Xue, L. L. Jiang, P. L. Liu, M. Destefanis, Q. A. Malik, F. A. Harris, J. B. Jiao, J. Zhong, Zhiyong Zhang, X. Liu, Z. J. Xiao, Y. P. Guo, Serkant Ali Cetin, E. H. Thorndike, X. H. Liu, J. P. Dai, C. L. Ma, C. Geng, F. Li, F. C. Ma, G. F. Xu, S. Jin, X. Y. Song, Y. H. Zheng, Xiaobo Zhu, S. Ma, X. R. Li, Cong-Feng Qiao, D. Toth, J. F. Qiu, Meng Wang, N. Yu. Muchnoi, Heng-Yun Ye, L. Fava, Y. H. Zhang, J. S. Huang, Q. G. Wen, C. X. Liu, Z. Y. Wang, C. Motzko, K. Goetzen, W. Kuehn, Julian Schulze, Joong-Won Park, M. Qi, Qi-Wen Lü, S. B. Liu, M. Bertani, W. Gradl, J. Min, H. B. Liu, and K. L. He
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Positron, Annihilation, law, Electron–positron annihilation, Hadron, High Energy Physics::Experiment, Center of mass, Collider, Energy (signal processing), law.invention
Abstract: Using a 478 pb(-1) data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider storage ring at a center-of-mass energy of root s = 4.009 GeV, the production of e(+)e(-) -> eta J/psi is observed for the first time with a statistical significance of greater than 10 sigma. The Born cross section is measured to be (32.1 +/- 2.8 +/- 1.3) pb, where the first error is statistical and the second systematic. Assuming the eta J/psi signal is from a hadronic transition of the psi(4040), the fractional transition rate is determined to be B(psi(4040) -> eta J/psi) = (5.2 +/- 0.5 +/- 0.2 +/- 0.5) x 10(-3), where the first, second, and third errors are statistical, systematic, and the uncertainty from the psi(4040) resonant parameters, respectively. The production of e(+)e(-) -> pi(0)J/psi is searched for, but no significant signal is observed, and B(psi(4040) -> pi(0)J/psi) < 2.8 x 10(-4) is obtained at the 90% confidence level.
Published: 2012

218. Measurement ofχcjdecaying intopn¯π−andpn¯π−π0

Author: M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, J. V. Bennett, M. Bertani, J. M. Bian, E. Boger, O. Bondarenko, I. Boyko, S. Braun, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, Y. P. Chu, D. Cronin-Hennessy, H. L. Dai, J. P. Dai, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, W. M. Ding, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, S. X. Du, J. Z. Fan, J. Fang, S. S. Fang, Y. Fang, L. Fava, C. Q. Feng, C. D. Fu, O. Fuks, Q. Gao, Y. Gao, C. Geng, K. Goetzen, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, T. Guo, Y. P. Guo, Y. L. Han, F. A. Harris, K. L. He, M. He, Z. Y. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, G. M. Huang, G. S. Huang, H. P. Huang, J. S. Huang, L. Huang, X. T. Huang, Y. Huang, T. Hussain, C. S. Ji, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. L. Jiang, L. W. Jiang, X. S. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. Kloss, B. Kopf, M. Kornicer, W. Kuehn, A. Kupsc, W. Lai, J. S. Lange, M. Lara, P. Larin, M. Leyhe, C. H. Li, Cheng Li, Cui Li, D. Li, D. M. Li, F. Li, G. Li, H. B. Li, J. C. Li, K. Li, Lei Li, P. R. Li, Q. J. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, D. X. Lin, B. J. Liu, C. L. Liu, C. X. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. M. Liu, J. Liu, J. P. Liu, K. Liu, K. Y. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqiang Liu, Zhiqing Liu, H. Loehner, X. C. Lou, G. R. Lu, H. J. Lu, H. L. Lu, J. G. Lu, X. R. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, M. Lv, F. C. Ma, H. L. Ma, Q. M. Ma, S. Ma, T. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Q. A. Malik, Y. J. Mao, Z. P. Mao, J. G. Messchendorp, J. Min, T. J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, H. Moeini, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, I. B. Nikolaev, Z. Ning, S. Nisar, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, M. Pelizaeus, H. P. Peng, K. Peters, J. L. Ping, R. G. Ping, R. Poling, N. Q., M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, X. S. Qin, Y. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, X. D. Ruan, A. Sarantsev, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, X. Y. Shen, H. Y. Sheng, M. R. Shepherd, W. M. Song, X. Y. Song, S. Spataro, B. Spruck, G. X. Sun, J. F. Sun, S. S. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, D. Toth, M. Ullrich, I. Uman, G. S. Varner, B. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, Q. J. Wang, S. G. Wang, W. Wang, X. F. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, M. Werner, U. Wiedner, M. Wolke, L. H. Wu, N. Wu, Z. Wu, L. G. Xia, Y. Xia, D. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, Z. Xue, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. X. Yang, L. Yang, Y. Yang, Y. X. Yang, H. Ye, M. Ye, M. H. Ye, B. X. Yu, C. X. Yu, H. W. Yu, J. S. Yu, S. P. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, S. L. Zang, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. B. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. J. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, S. H. Zhang, X. J. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, X. H. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, Li Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, B. S. Zou, and J. H. Zou
Subjects: Nuclear physics, Physics, Formalism (philosophy of mathematics), Nuclear and High Energy Physics, Partial wave analysis, Electron–positron annihilation, Analytical chemistry, Pi, High Energy Physics::Experiment, Astrophysics, Nuclear Experiment
Abstract: Using (106.41 +/- 0.86) x 10(6) Psi(3686) events collected with the BESIII detector at BEPCII, we study for the first time the decay chi(cJ) -> eta'K+K- (J = 1, 2), where eta' -> gamma rho(0) and eta' -> eta pi(+)pi(-). A partial wave analysis in the covariant tensor amplitude formalism is performed for the decay chi(c1) -> eta'K+K-. Intermediate processes chi(c1) -> eta'f(2)'(1525) chi(c1) -> K-0*(1430)K-+/-(-/+) (K-0*(1430)(+/-) -> eta'K-+/-) are observed with statistical significances larger than 5 sigma, and their branching fractions are measured.
Published: 2012

219. Observation ofχcJdecays toΛΛ¯π+π−

Author: H. J. Lu, J. G. Lu, G. R. Liao, F. E. Maas, T. Hu, X. L. Li, B. Q. Wang, Michael Werner, Guangming Huang, Z. Wu, M. Bertani, X. L. Wang, Xiao-Tong Lu, P. L. Wang, Qi-Wen Lü, Q. P. Ji, I. R. Boyko, H. L. Ma, M. Y. Dong, Y. L. Han, G. A. Chelkov, M. L. Chen, I. B. Nikolaev, Q. A. Malik, Zhiqiang Liu, Miao He, D. M. Li, H. Muramatsu, J. B. Jiao, M. Shao, Y. T. Gu, Shan Wang, S. H. Zhang, X. Y. Shen, L. L. Jiang, M. Pelizaeus, H. B. Li, C. L. Luo, HongSheng Zhao, Q. J. Wang, J. Zhong, Q. J. Li, W. Gradl, F. A. Harris, J. H. Zou, I. Tapan, M. N. Achasov, S. L. Li, Y. H. Guan, Y. H. Yan, Xichao Ruan, L. P. Zhou, Jianping Zheng, S. Ma, M. Maggiora, Ling Zhao, D. Toth, J. W. Zhao, J. Q. Zhang, Guofa Xu, G. S. Varner, Z. P. Zhang, Sanfeng Wu, J. S. Huang, C. X. Liu, Hang Liu, Z. H. An, Y. M. Ma, Z. P. Mao, D. Cronin-Hennessy, S. S. Sun, Z. Ning, J. M. Bian, Lei Zhao, Z. Y. He, S. J. Zhao, Z. L. Hou, W. Lai, C. C. Zhang, B. Zhong, L. B. Guo, Y. C. Zhu, Y. Ding, M. H. Gu, F. F. Jing, S. B. Liu, Jürgen Becker, X. T. Liao, A. Sarantsev, D. H. Wei, J. S. Lange, J. Min, Y. Nefedov, B. J. Liu, F. Li, F. C. Ma, M. Lv, S. X. Du, K. Y. Liu, Z. Xue, Y. F. Liang, R. E. Mitchell, H. P. Cheng, J. Fang, H. B. Liu, Lei Li, G. R. Lu, Y. H. Zheng, S. Qian, Q. An, Jialun Ping, X. Y. Zhang, M. Destefanis, Xiaobo Zhu, Cong-Feng Qiao, J. F. Qiu, H. Y. Sheng, T. Held, C. S. Ji, Q. Ouyang, C. Z. Yuan, Z. A. Zhu, Q. M. Ma, D. P. Jin, J. Z. Bai, K. L. He, L. Fava, C. Motzko, G. X. Sun, J. V. Bennett, W. B. Yan, T. Ma, Q. J. Xu, S. S. Fang, X. Q. Li, Y. B. Liu, Li Yan, Y. N. Gao, D. H. Sun, Zhiqing Liu, N. Yu. Muchnoi, Y. Zhang, Y. Yuan, Y. S. Zhu, C. P. Shen, C. X. Yu, Y. J. Sun, E. Boger, D. J. Ambrose, Wei Wu, H. Liang, Heng-Yun Ye, S. Pacetti, Yanping Huang, Y. H. Zhang, Krisztian Peters, M. Z. Wang, Z. Jiao, D. H. Zhang, C. Nicholson, Julian Schulze, Yang Qin, Joong-Won Park, J. C. Chen, J. F. Chang, A. Zallo, A. Q. Guo, X. H. Mo, L. S. Wang, Y. X. Yang, E. Prencipe, M. H. Ye, B. Zheng, R. G. Ping, M. Qi, Y. P. Chu, Q. Liu, S. L. Olsen, Q. G. Wen, O. Bondarenko, X. N. Li, M. Ullrich, Z. J. Xiao, X. P. Xu, X. B. Ji, Z. Y. Wang, L. G. Xia, Haiping Peng, X. Cai, Nasser Kalantar-Nayestanaki, W. D. Li, M. R. Shepherd, A. Calcaterra, Z. G. Zhao, Tao Luo, L. L. Wang, M. Kavatsyuk, Q. Zhao, Y. Z. Sun, Feng Xue, Cui Li, Q. L. Xiu, B. X. Yu, X. K. Zhou, Zujian Wang, B. Spruck, E. H. Thorndike, Fang Liu, H. H. Zhang, C. Morales Morales, X. Tang, X. L. Luo, U. Wiedner, I. Denysenko, Y. P. Guo, M. Greco, Gang Zhao, Shou-hua Zhu, X. H. Liu, X. H. Zhao, Serkant Ali Cetin, G. Li, K. X. Zhao, X. R. Li, L. Y. Dong, B. X. Zhang, H. S. Chen, Y. B. Zhao, J. P. Dai, C. D. Fu, C. Q. Feng, J. F. Sun, H. L. Dai, B. Y. Zhang, C. L. Ma, Z. Y. Deng, Rinaldo Baldini Ferroli, Z. B. Li, K. J. Zhu, Xuantong Zhang, B. S. Zou, Peilian Liu, Qun-Yao Wang, Z. G. Wang, H. Y. Zhang, C. J. Tang, Y. Zeng, Y. P. Lu, Kai Liu, Ke Wang, Zhe Sun, W. M. Ding, C. Geng, Z. A. Liu, Y. Ban, P. Weidenkaff, R. Poling, Z. H. Qin, F. Feldbauer, Jie Yu, V. V. Bytev, S. P. Wen, Fenfen An, G. F. Chen, X. S. Qin, X. R. Zhou, J. L. Fu, Cheng Li, Y. M. Zhu, T. J. Min, B. D. Schaefer, Chuan Liu, Y. F. Wang, T. C. Zhao, Feng Liu, Chang Liu, Xiang Liu, J. Y. Zhang, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Alexey Zhemchugov, H. M. Hu, F. H. Liu, J. W. Zhang, M. Ablikim, Y. J. Mao, Y. K. Heng, Hao Liu, M. G. Zhao, Y. H. Yang, H. X. Yang, H.S. Xu, G. F. Xu, T. Hussain, X. Y. Ma, S. Jin, X. Y. Song, W. X. Gong, J. P. Liu, Z. J. Sun, H. Loehner, K. Goetzen, J. G. Messchendorp, W. Kuehn, W. G. Li, A. G. Denig, C. H. Li, S. Spataro, C. Zhu, H. H. Liu, J. C. Li, Yao Wang, H. M. Liu, R. A. Briere, J. F. Hu, J. Zhuang, X. S. Jiang, G. F. Cao, M. X. Luo, O. Cakir, D. V. Dedovich, Zhenli Xu, Y. Q. Wang, X. T. Huang, Yu Zhang, G. Rong, A. A. Zafar, K. H. Rashid, Y. T. Liang, S. J. Chen, K. J. Li, L. H. Wu, X. L. Ji, S. P. Yu, Z. Y. Zhang, Y. G. Xie, and N. Wu
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics
Published: 2012

220. Study ofJ/ψ→pp¯andJ/ψ→nn¯

Author: Zhenyu Zhang, W. Lai, Z. Ning, Tao Hu, S. L. Li, R. B. Ferroli, X. S. Qin, C. Nicholson, S. S. Sun, M. H. Ye, P. L. Wang, F. F. Jing, Xing Lu, J. H. Zou, J. Zhong, C. Morales Morales, X. L. Luo, M. N. Achasov, J. X. Zuo, M. Ullrich, X. B. Ji, K. Goetzen, X. D. Ruan, A. Sarantsev, Z. P. Mao, X. K. Zhou, X. H. Zhao, H. H. Zhang, W. M. Ding, Y. Nefedov, X. D. Sun, J. C. Chen, X. L. Ji, S. P. Yu, H. X. Yang, Yao Wang, K. J. Zhu, Xuantong Zhang, Ling Zhao, Lei Zhao, Z. Y. He, Yang Yang, Z. A. Liu, A. Zhemchugov, M. Wang, Z. Jiao, Talib Hussain, Y. S. Zhang, J. S. Huang, Z. G. Wang, H. Y. Zhang, M. Pelizaeus, Zhiqing Liu, J. S. Lange, H. S. Zhao, R. E. Mitchell, D. H. Zhang, S. J. Zhao, X. R. Zhou, J. L. Fu, Jingwei Zhao, J. F. Hu, J. P. Dai, Chang-Zheng Yuan, G. M. Xu, X. Cai, S. P. Wen, Y. F. Liang, L. Y. Dong, Chun S. J. Pun, Niklaus Berger, Y. Ban, Q. A. Malik, Cheng Li, T. Held, L. L. Wang, Chunyan Zhu, A. Q. Guo, C. L. Luo, T. C. Zhao, J. L. Ping, J. Y. Zhang, X. Y. Zhang, R. Poling, H. J. Lu, Z. J. Xiao, Fang Liu, Lei Zhou, Shaodan Ma, M. G. Zhao, J. Min, L. Zhang, X. L. Li, M. L. Chen, D. Dedovich, Xingtao Huang, A. Denig, X. F. Wang, Huihui Liu, Y. Yuan, D. H. Sun, Zhiqiang Liu, Miao He, Yi-Fang Zhao, X. P. Xu, S. H. Zhu, Shouguang Jin, F. E. Maas, Q. An, Y. P. Huang, R. G. Ping, Z. A. Zhu, Y. T. Liang, B. Zheng, D. M. Li, X. R. Li, Yu-Bin Liu, B. Y. Zhang, V. Bytev, X. Q. Hao, J. G. Messchendorp, P. L. Liu, B. Huang, L. S. Wang, N. Kalantar-Nayestanaki, X. H. Mo, Tao Luo, H. Y. Sheng, H. M. Hu, Y. Qin, Q. J. Wang, J. P. Liu, S. X. Wu, H. H. Liu, M. Greco, S. Spataro, K. H. Rashid, S. G. Wang, Feng Liu, Y. H. Zheng, I. B. Nikolaev, Y. J. Sun, Jianping Zheng, X. Liu, Xian Lun Zhu, Wei Li, X. L. Wang, U. Wiedner, Q. L. Xiu, J. Zhang, C. D. Fu, W. L. Yuan, Guangyu Zhao, M. Lv, J. G. Zhang, M. Kavatsyuk, Sai-Juan Chen, D. P. Jin, A. Calcaterra, C. X. Yu, J. Q. Zhang, G. X. Sun, W. G. Li, C. L. Ma, Xiujuan Tang, L. B. Guo, H. S. Chen, Kai Liu, J. C. Li, Kun Liu, J. F. Sun, K. Peters, Y. P. Lu, Shisong Fang, G. R. Liao, Qun-Yao Wang, C. S. Ji, E. Prencipe, G. M. Huang, G. F. Xu, Q. Ji, T. Yang, X. T. Liao, D. Toth, A. Zallo, I. Denysenko, E. Boger, H. Xu, F. C. Ma, C. X. Liu, Y. K. Heng, J. W. Zhang, Q. J. Li, H. M. Liu, Hang Liu, N. Wu, L. G. Xia, Y. S. Zhu, J. F. Qiu, G. S. Varner, F. F. An, S. Pacetti, Y. H. Guan, Y. J. Mao, B. Wang, Z. Y. Deng, Michael Werner, X. H. Liu, Z. P. Zheng, M. Bertani, M. R. Shepherd, Feng Xue, Cui Li, B. X. Yu, X. N. Li, Y. B. Liu, Y. H. Yan, Q. J. Xu, H. Loehner, D. H. Wei, Y. Xu, N. B. Li, B. Zhong, W. Kuehn, J. Zhuang, L. H. Wu, M. X. Luo, T. J. Min, Qingming Ma, S. H. Zhang, Q Zhao, B. X. Zhang, H. Ye, Chang Liu, Jie Yu, D. J. Ambrose, Zhihao Xu, Chuan Liu, T. R. Zhang, M. H. Gu, Zhibing Li, Z. H. Qin, Guo-Ming Chen, C. Motzko, S. L. Olsen, G. Li, Z. L. Hou, G. R. Lu, J. Fang, J. F. Chang, M. Qi, G. F. Cao, Xiang Li, C. Geng, Z. Xue, J. K. Becker, G. Rong, Y. P. Guo, J. K. C. Leung, J. B. Jiao, Y. P. Chu, Junguang Lu, C. F. Qiao, G. Chelkov, Xiaobo Zhu, Yang Gao, N. Yu. Muchnoi, Y. H. Zhang, Q. W. Lu, Q. G. Wen, Y. M. Zhu, Z. Y. Wang, M. Maggiora, K. Li, E. H. Thorndike, Yuanbo Chen, X. S. Jiang, S. B. Liu, Lei Li, Z. P. Zhang, T. Ma, H. B. Liu, Hua-Bin Li, B. S. Zou, Y. Zhang, Yuehong Xie, Wei Wu, H. Mao, H. L. Ma, M. Shao, M. Y. Dong, Z. G. Zhao, Y. X. Yang, Hai Liang, P. Weidenkaff, Yulei Han, Kunlun He, Daniel P Cronin-Hennessy, Y. Z. Sun, W. B. Yan, L. L. Jiang, Z. H. An, B. Spruck, Xueyong Shen, F. Feldbauer, Zujian Wang, Zhi-Jun Sun, J. Z. Bai, Y. T. Gu, Li Yan, Fu-Hu Liu, Y. F. Wang, F. A. Harris, Zhe Sun, Y. B. Chen, X. Y. Ma, J. Z. Zhang, Chunmei Zhang, K. Wang, C. Q. Feng, C. H. Li, B. Q. Wang, Y. Ma, C. P. Shen, H. P. Cheng, Y. Q. Wang, Z. Wu, M. Ablikim, A. A. Zafar, K. Y. Liu, H. L. Tian, C. J. Tang, K. X. Zhao, H. L. Dai, S. X. Du, I. Boyko, J. Schulze, Y. Zeng, J. M. Bian, Y. Ding, R. A. Briere, S. Qian, L. K. Jia, Xie-Yan Song, Q. Ouyang, Feng Li, O. Bondarenko, L. Fava, Brent J. Liu, M. Destefanis, W. X. Gong, Joong-Won Park, and W. Gradl
Subjects: Baryon, Physics, Nuclear and High Energy Physics, QCD sum rules, Proton, Electron–positron annihilation, Phase angle, Analytical chemistry, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nucleon, Antineutron, Bar (unit)
Abstract: The decays J/psi -> p (p) over bar and J/psi -> n (n) over bar have been investigated with a sample of 225.2 x 10(6) J/psi events collected with the BESIII detector at the BEPCII e(+)e(-) collider. The branching fractions are determined to be B(J/psi -> p (p) over bar) = (2.112 +/- 0.004 +/- 0.031 x 10(-3) and B(J/psi -> n (n) over bar) =(2.07 +/- 0.01 +/- 0.17) x 10(-3). Distributions of the angle theta between the proton or antineutron and the beam direction are well described by the form 1 + alpha cos(2)theta, and we find alpha = 0.595 +/- 0.012 +/- 0.015 for J/psi -> p (p) over bar and alpha = 0.50 +/- 0.04 +/- 0.21 for J/psi -> n (n) over bar. Our branching- fraction results suggest a large phase angle between the strong and electromagnetic amplitudes describing the J/psi -> N (N) over bar decay.
Published: 2012

221. First observation of the isospin violating decayJ/ψ→ΛΣ¯0+c.c

Author: M. Qi, H. L. Tian, D. J. Ambrose, K. Li, Fang Liu, S. Qian, Jialun Ping, E. Prencipe, I. Denysenko, A. Zallo, L. L. Wang, X. Y. Zhang, S. Ma, W. D. Li, Z. Ning, R. B. Ferroli, D. Toth, Y. J. Sun, E. Boger, Yang Qin, Q. M. Ma, H. B. Li, Z. P. Zheng, X. K. Zhou, Y. Q. Wang, B. Y. Zhang, Feng Xue, Cui Li, Yingchun Zhu, A. G. Denig, C. L. Luo, A. Q. Guo, Xiao-Tong Lu, H. X. Yang, H.S. Xu, Z. H. Qin, Chuan Liu, Y. F. Wang, F. Li, Yuanbo Chen, Yu-Bin Liu, Y. Nefedov, J. F. Sun, Y. H. Zheng, Y. F. Liang, Y. Yuan, Y. S. Zhu, F. Feldbauer, Xiaobo Zhu, Cong-Feng Qiao, Zhiyong Zhang, D. P. Jin, X. T. Huang, M. Ablikim, A. A. Zafar, G. Rong, Chang Liu, X. Liu, C. C. Zhang, B. Zhong, L. B. Guo, Sanfeng Wu, Y. Zeng, J. S. Huang, C. X. Liu, Meng Wang, S. B. Liu, Z. G. Wang, Qun-Yao Wang, T. R. Zhang, M. Y. Dong, Lei Li, Huihui Liu, J. P. Liu, J. G. Messchendorp, Z. J. Xiao, Y. P. Guo, N. Yu. Muchnoi, X. L. Ji, X. Y. Ma, W. X. Gong, P. L. Liu, Y. Ding, F. C. Ma, J. Q. Zhang, Heng-Yun Ye, Y. H. Zhang, I. B. Nikolaev, K. H. Rashid, H. Y. Zhang, M. Shao, Y. T. Gu, Serkant Ali Cetin, Ulrich Wiedner, Xiang Li, X. Q. Hao, X. Tang, Zhe Sun, W. G. Li, J. Min, H. B. Liu, S. P. Yu, G. A. Chelkov, H. L. Ma, D. M. Li, H. Mao, Zhiqing Liu, J. B. Jiao, S. Spataro, X. P. Xu, C. Zhu, B. J. Liu, H. M. Liu, Q. G. Wen, H. J. Lu, J. G. Lu, J. F. Hu, G. F. Cao, Z. A. Liu, Talib Hussain, X. L. Wang, H. Muramatsu, Q. J. Li, J. Zhong, T. Ma, Yanping Huang, Jie Yu, G. R. Lu, J. F. Chang, C. H. Li, F. E. Maas, Z. Y. Wang, T. Hu, J. X. Zuo, K. L. He, K. Goetzen, W. Kuehn, Y. B. Chen, Z. H. An, Xiaofeng Zhu, J. Z. Zhang, A. Sarantsev, H. H. Liu, Yao Wang, J. C. Li, Kun Liu, Y. X. Yang, J. H. Zou, G. F. Chen, D. H. Wei, J. S. Lange, Z. A. Zhu, S. S. Sun, Y. Ban, P. Weidenkaff, E. H. Thorndike, B. Wang, Michael Werner, Xiangdong Ruan, T. J. Min, K. J. Zhu, Y. M. Zhu, M. H. Ye, J. Y. Zhang, S. P. Wen, B. D. Schaefer, Y. G. Xie, J. Zhuang, M. L. Chen, M. X. Luo, X. Cai, X. R. Li, S. L. Olsen, R. A. Briere, D. H. Sun, X. H. Liu, Guangming Huang, X. S. Qin, X. R. Zhou, J. L. Fu, Cheng Li, Xuantong Zhang, D. V. Dedovich, G. X. Sun, Li Yan, L. Y. Dong, M. R. Shepherd, I. Tapan, X. S. Jiang, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Z. Wu, J. F. Qiu, L. K. Jia, J. P. Dai, S. X. Du, Y. T. Liang, H. M. Hu, Q. Zhao, G. Li, Y. Z. Sun, C. L. Ma, M. Bertani, L. Fava, Y. K. Heng, C. Nicholson, S. L. Li, N. Wu, O. Cakir, Krisztian Peters, L. G. Xia, Z. B. Li, Y. H. Yan, M. H. Gu, J. W. Zhao, Nicolas Berger, Zhenli Xu, G. F. Xu, W. M. Ding, S. J. Chen, Y. L. Han, C. D. Fu, J. Zhang, O. Bondarenko, M. Kavatsyuk, Shan Wang, C. Motzko, J. W. Zhang, C. Q. Feng, Gang Zhao, X. F. Tang, Y. S. Zhang, Jürgen Becker, M. Ullrich, Z. Y. Deng, H. Y. Sheng, S. Jin, R. E. Mitchell, H. H. Zhang, C. X. Yu, C. Geng, Y. J. Mao, Z. G. Zhao, L. L. Jiang, M. Greco, HongSheng Zhao, Q. J. Wang, D. Cronin-Hennessy, Xingguo Li, W. Gradl, M. G. Zhao, G. S. Varner, B. X. Zhang, R. Poling, X. Y. Song, Zujian Wang, B. Huang, X. H. Mo, L. S. Wang, Hang Liu, Z. J. Sun, H. Loehner, B. Zheng, R. G. Ping, Julian Schulze, F. A. Harris, J. Z. Bai, Jianping Zheng, Y. H. Guan, B. Q. Wang, M. Maggiora, B. Spruck, X. H. Zhao, Joong-Won Park, K. Y. Liu, Q. P. Ji, Y. Zhang, Q. An, C. P. Shen, J. M. Bian, Zhenyu Zhang, W. Lai, M. Lv, K. X. Zhao, Feng Liu, Ling Zhao, L. H. Wu, Lei Zhao, Z. Y. He, Z. L. Hou, Y. B. Zhao, Yang Yang, Wei Wu, A. Zhemchugov, Y. P. Chu, S. H. Zhang, X. Y. Shen, X. B. Ji, Z. Xue, T. Held, M. Destefanis, Y.N. Gao, J. C. Chen, Nasser Kalantar-Nayestanaki, W. B. Yan, G. M. Xu, C. Z. Yuan, C. J. Tang, Y. P. Lu, Kai Liu, P. L. Wang, C. Morales Morales, Qi-Wen Lü, Q. A. Malik, S. Pacetti, Zhiqiang Liu, Miao He, M. N. Achasov, L. P. Zhou, Y. M. Ma, Z. P. Mao, H. P. Cheng, J. Fang, Shou-hua Zhu, Ke Wang, M. Pelizaeus, X. Sun, B. S. Zou, V. V. Bytev, A. Calcaterra, C. S. Ji, Fenfen An, H. Liang, T. C. Zhao, Tao Luo, B. X. Yu, H. S. Chen, Shujun Zhao, H. L. Dai, Igor Boyko, X. T. Liao, Q. J. Xu, X. N. Li, Haiping Peng, G. R. Liao, F. F. Jing, W. L. Yuan, Q. Ouyang, S. S. Fang, Y. B. Liu, N. B. Li, Q. L. Xiu, and X. L. Luo
Subjects: Physics, Baryon, Nuclear and High Energy Physics, Branching fraction, Isospin, Electron–positron annihilation, Quark model, Hyperon, Analytical chemistry, Sigma, High Energy Physics::Experiment, Lambda
Abstract: Using a sample of (225.2 +/- 2.8) x 10(6) J/psi events collected with the BESIII detector, we present results of a study of J/psi -> gamma Lambda(Lambda) over bar and report the first observation of the isospin violating decay J/psi -> Lambda(Sigma) over bar (0) + c.c., in which (Sigma) over bar (0) decays to gamma (Lambda) over bar. The measured branching fractions are B(J/psi -> (Lambda) over bar Sigma(0)) = (1.46 +/- 0.11 +/- 0.12) x 10(-5) and B(J/psi -> Lambda(Sigma) over bar (0)) = (1.37 +/- 0.12 +/- 0.11) x 10(-5). We search for Lambda(1520) -> gamma Lambda decay, and find no evident signal, and an upper limit for the product branching fraction B(J/psi -> Lambda(Lambda) over bar (1520) + c.c) x B(Lambda(1520) -> gamma Lambda) Lambda in J/psi -> gamma eta(c), eta(c) -> Lambda(Lambda) over bar and measure the branching fraction B(eta(c) -> Lambda(Lambda) over bar) = (1.16 +/- 0.12(stat) +/- 0.19(syst) +/- 0.28(PDG)) x 10(-3).
Published: 2012

222. First Observation of theM1Transitionψ(3686)→γηc(2S)

Author: C. Q. Feng, L. Zhang, Z. Jiao, Z. A. Zhu, B. Q. Wang, M. Bertani, Y. Ma, C. P. Shen, B. Zhong, J. Q. Zhang, Zhe Sun, X. S. Qin, C. Nicholson, Qingming Ma, Zhiqing Liu, Y. B. Chen, Feng Liu, Chang Liu, J. Z. Zhang, M. Ullrich, X. D. Ruan, H. H. Liu, T. R. Zhang, K. Wang, Kun Liu, Shisong Fang, F. F. An, Y. H. Guan, X. H. Liu, X. H. Mo, M. H. Gu, L. Yu, X. R. Li, Q. J. Wang, J. P. Liu, Y. P. Guo, J. K. C. Leung, G. Li, A. Q. Guo, Jianping Zheng, W. L. Yuan, Ling Zhao, H. Loehner, J. B. Jiao, M. Lv, J. G. Zhang, X. T. Liao, Y. P. Chu, Junguang Lu, C. F. Qiao, J. Z. Bai, Y. T. Gu, J. C. Chen, Lei Zhao, Z. Y. He, G. Chelkov, Yang Yang, C. L. Ma, H. Xu, F. C. Ma, I. Boyko, Y. Zeng, J. Zhuang, L. H. Wu, M. X. Luo, Y. H. Yan, Z. Ning, X. L. Wang, X. S. Jiang, J. S. Huang, C. Geng, A. Zhemchugov, R. A. Briere, D. H. Zhang, H. B. Liu, S. L. Li, R. B. Ferroli, C. S. Ji, T. Yang, L. Y. Dong, L. K. Jia, I. Denysenko, E. Boger, B. X. Zhang, Y. J. Mao, Niklaus Berger, S. Pacetti, Zhiqiang Liu, Miao He, Q. An, B. X. Yu, D. P. Jin, W. Kuehn, J. F. Hu, X. L. Li, S. X. Wu, B. S. Zou, T. J. Min, Xiujuan Tang, X. N. Li, Brent J. Liu, M. Destefanis, Feng Li, G. M. Xu, H. M. Hu, H. Mao, Haiping Peng, X. Cai, Y. T. Liang, Zhihao Xu, Chuan Liu, Zong-Ping Zheng, Z. H. Qin, J. H. Zou, Xie-Yan Song, W. X. Gong, G. M. Huang, D. J. Ambrose, Chang-Zheng Yuan, P. Weidenkaff, J. Zhang, M. Kavatsyuk, A. Sarantsev, Tao Luo, B. Wang, Z. Y. Deng, Daniel P Cronin-Hennessy, Xingtao Huang, A. Denig, Q. Ouyang, Sai-Juan Chen, K. Li, Michael Werner, E. H. Thorndike, Chun S. J. Pun, V. Bytev, Li Yan, H. L. Ma, C. Motzko, S. L. Olsen, Y. Qin, M. Shao, Xian Lun Zhu, C. D. Fu, N. Yu. Muchnoi, Y. Nefedov, D. H. Sun, Hang Liu, J. S. Lange, L. B. Guo, M. G. Zhao, T. C. Zhao, J. L. Ping, X. D. Sun, R. Poling, G. R. Lu, X. F. Wang, Huihui Liu, Fu-Hu Liu, Y. H. Zhang, Q. W. Lu, H. X. Yang, K. J. Zhu, Jingwei Zhao, A. Calcaterra, X. W. Zhu, O. Bondarenko, Yu-Bin Liu, H. H. Zhang, Jiangchao Li, Z. G. Zhao, Yuanbo Chen, Q. J. Xu, J. G. Messchendorp, S. B. Liu, Joong-Won Park, Q. G. Wen, Xuantong Zhang, C. X. Liu, L. Fava, Y. X. Yang, S. H. Zhang, H. L. Dai, Jie Yu, D. H. Wei, Yao Wang, Y. Yuan, Q. L. Xiu, E. Prencipe, Z. Y. Wang, M. Maggiora, Lei Li, G. X. Sun, W. G. Li, M. Wang, S. X. Du, Guo-Ming Chen, Z. L. Hou, Y. B. Liu, Z. P. Zhang, B. D. Schaefer, Y. Ban, S. G. Wang, J. Schulze, M. Y. Dong, X. L. Ji, S. P. Yu, S. P. Wen, Y. F. Liang, Y. Z. Sun, Q. A. Malik, S. H. Zhu, J. M. Bian, Z. H. An, B. Spruck, Z. Xue, T. Ma, Q. Ji, C. X. Yu, Y. Ding, Haosheng Chen, Talib Hussain, P. L. Wang, G. F. Xu, S. Qian, J. F. Sun, M. R. Shepherd, F. Feldbauer, Hai Liang, P. L. Liu, Feng Xue, Cui Li, Hua-Bin Li, M. Qi, J. K. Becker, Y. Xu, N. B. Li, Q. J. Li, Q Zhao, H. M. Liu, M. Pelizaeus, H. Ye, G. S. Varner, Y. Zhang, Yulei Han, Yuehong Xie, Xing Lu, Wei Wu, F. E. Maas, J. Zhong, H. P. Cheng, X. Q. Li, Kunlun He, Kai Liu, Yang Gao, Ka-Yuet Liu, N. Wu, Y. Q. Wang, Zhibing Li, M. Ablikim, C. L. Luo, A. A. Zafar, W. B. Yan, L. L. Jiang, X. L. Luo, Fang Liu, Lei Zhou, X. K. Zhou, Xueyong Shen, Zujian Wang, Y. S. Zhang, H. S. Zhao, Zhi-Jun Sun, X. P. Xu, T. Held, H. J. Lu, D. M. Li, B. Y. Zhang, Y. H. Zheng, I. B. Nikolaev, F. F. Jing, M. N. Achasov, J. X. Zuo, Z. G. Wang, H. Y. Zhang, Guangyu Zhao, R. E. Mitchell, J. Y. Zhang, J. P. Dai, J. Min, Chunyan Zhu, D. Dedovich, Shaodan Ma, Shouguang Jin, Yi-Fang Zhao, Y. P. Huang, W. Gradl, W. Lai, Y. K. Heng, J. W. Zhang, X. Q. Hao, Tao Hu, B. Huang, Zhiyong Zhang, L. S. Wang, N. Kalantar-Nayestanaki, M. H. Ye, K. H. Rashid, X. Liu, C. Morales Morales, H. Y. Sheng, S. Spataro, M. Greco, U. Wiedner, Y. P. Lu, G. R. Liao, D. Toth, S. J. Zhao, L. L. Wang, X. Y. Zhang, M. L. Chen, R. G. Ping, S. S. Sun, X. B. Ji, K. Goetzen, Z. P. Mao, X. H. Zhao, W. M. Ding, J. Fang, J. F. Chang, G. F. Cao, G. Rong, Z. A. Liu, Y. M. Zhu, X. R. Zhou, J. L. Fu, Cheng Li, Z. J. Xiao, B. Zheng, Y. J. Sun, Wei Li, Qun-Yao Wang, K. Peters, A. Zallo, L. G. Xia, Y. S. Zhu, J. F. Qiu, Z. Wu, H. L. Tian, C. J. Tang, K. X. Zhao, Y. F. Wang, F. A. Harris, X. Y. Ma, Chunmei Zhang, and C. H. Li
Subjects: Physics, Branching fraction, Electron–positron annihilation, Excited state, Analytical chemistry, General Physics and Astronomy
Abstract: Using a sample of 106×10(6) ψ(3686) events collected with the BESIII detector at the BEPCII storage ring, we have made the first measurement of the M1 transition between the radially excited charmonium S-wave spin-triplet and the radially excited S-wave spin-singlet states: ψ(3686)→γη(c)(2S). Analyses of the processes ψ(3686)→γη(c)(2S) with η(c)(2S)→K(S)(0)K(±)π(∓) and K(+)K(-)π(0) give an η(c)(2S) signal with a statistical significance of greater than 10 standard deviations under a wide range of assumptions about the signal and background properties. The data are used to obtain measurements of the η(c)(2S) mass (M(η(c)(2S))=3637.6±2.9(stat)±1.6(syst) MeV/c(2)), width (Γ(η(c)(2S))=16.9±6.4(stat)±4.8(syst) MeV), and the product branching-fraction (B(ψ(3686)→γη(c)(2S))×B(η(c)(2S)→KKπ)=(1.30±0.20(stat)±0.30(syst))×10(-5)). Combining our result with a BABAR measurement of B(η(c)(2S)→KKπ), we find the branching fraction of the M1 transition to be B(ψ(3686)→γη(c)(2S))=(6.8±1.1(stat)±4.5(syst))×10(-4).
Published: 2012

223. Observation of two new N* resonances in the decay ψ(3686)→ppπ0

Author: M, Ablikim, M N, Achasov, D J, Ambrose, F F, An, Q, An, Z H, An, J Z, Bai, Y, Ban, J, Becker, N, Berger, M, Bertani, J M, Bian, E, Boger, O, Bondarenko, I, Boyko, R A, Briere, V, Bytev, X, Cai, A, Calcaterra, G F, Cao, J F, Chang, G, Chelkov, G, Chen, H S, Chen, J C, Chen, M L, Chen, S J, Chen, Y, Chen, Y B, Chen, H P, Cheng, Y P, Chu, D, Cronin-Hennessy, H L, Dai, J P, Dai, D, Dedovich, Z Y, Deng, A, Denig, I, Denysenko, M, Destefanis, W M, Ding, Y, Ding, L Y, Dong, M Y, Dong, S X, Du, J, Fang, S S, Fang, L, Fava, F, Feldbauer, C Q, Feng, R B, Ferroli, C D, Fu, J L, Fu, Y, Gao, C, Geng, K, Goetzen, W X, Gong, W, Gradl, M, Greco, M H, Gu, Y T, Gu, Y H, Guan, A Q, Guo, L B, Guo, Y P, Guo, Y L, Han, X Q, Hao, F A, Harris, K L, He, M, He, Z Y, He, T, Held, Y K, Heng, Z L, Hou, H M, Hu, J F, Hu, T, Hu, B, Huang, G M, Huang, J S, Huang, X T, Huang, Y P, Huang, T, Hussain, C S, Ji, Q, Ji, X B, Ji, X L, Ji, L K, Jia, L L, Jiang, X S, Jiang, J B, Jiao, Z, Jiao, D P, Jin, S, Jin, F F, Jing, N, Kalantar-Nayestanaki, M, Kavatsyuk, W, Kühn, W, Lai, J S, Lange, J K C, Leung, C H, Li, Cheng, Li, Cui, Li, D M, Li, F, Li, G, Li, H B, Li, J C, Li, K, Li, Lei, Li, N B, Li, Q J, Li, S L, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, X R, Li, Z B, Li, H, Liang, Y F, Liang, Y T, Liang, G R, Liao, X T, Liao, B J, Liu, C L, Liu, C X, Liu, C Y, Liu, F H, Liu, Fang, Liu, Feng, Liu, H, Liu, H B, Liu, H H, Liu, H M, Liu, H W, Liu, J P, Liu, K Y, Liu, Kai, Liu, Kun, Liu, P L, Liu, S B, Liu, X, Liu, X H, Liu, Y, Liu, Y B, Liu, Z A, Liu, Zhiqiang, Liu, Zhiqing, Liu, H, Loehner, G R, Lu, H J, Lu, J G, Lu, Q W, Lu, X R, Lu, Y P, Lu, C L, Luo, M X, Luo, T, Luo, X L, Luo, M, Lv, C L, Ma, F C, Ma, H L, Ma, Q M, Ma, S, Ma, T, Ma, X Y, Ma, Y, Ma, F E, Maas, M, Maggiora, Q A, Malik, H, Mao, Y J, Mao, Z P, Mao, J G, Messchendorp, J, Min, T J, Min, R E, Mitchell, X H, Mo, C, Morales Morales, C, Motzko, N Yu, Muchnoi, Y, Nefedov, C, Nicholson, I B, Nikolaev, Z, Ning, S L, Olsen, Q, Ouyang, S, Pacetti, J W, Park, M, Pelizaeus, K, Peters, J L, Ping, R G, Ping, R, Poling, E, Prencipe, C S J, Pun, M, Qi, S, Qian, C F, Qiao, X S, Qin, Y, Qin, Z H, Qin, J F, Qiu, K H, Rashid, G, Rong, X D, Ruan, A, Sarantsev, J, Schulze, M, Shao, C P, Shen, X Y, Shen, H Y, Sheng, M R, Shepherd, X Y, Song, S, Spataro, B, Spruck, D H, Sun, G X, Sun, J F, Sun, S S, Sun, X D, Sun, Y J, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, X, Tang, E H, Thorndike, H L, Tian, D, Toth, M, Ullrich, G S, Varner, B, Wang, B Q, Wang, J X, Wang, K, Wang, L L, Wang, L S, Wang, M, Wang, P, Wang, P L, Wang, Q, Wang, Q J, Wang, S G, Wang, X F, Wang, X L, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z Y, Wang, D H, Wei, P, Weidenkaff, Q G, Wen, S P, Wen, M, Werner, U, Wiedner, L H, Wu, N, Wu, S X, Wu, W, Wu, Z, Wu, L G, Xia, Z J, Xiao, Y G, Xie, Q L, Xiu, G F, Xu, G M, Xu, H, Xu, Q J, Xu, X P, Xu, Y, Xu, Z R, Xu, F, Xue, Z, Xue, L, Yan, W B, Yan, Y H, Yan, H X, Yang, T, Yang, Y, Yang, Y X, Yang, H, Ye, M, Ye, M H, Ye, B X, Yu, C X, Yu, J S, Yu, S P, Yu, C Z, Yuan, W L, Yuan, Y, Yuan, A A, Zafar, A, Zallo, Y, Zeng, B X, Zhang, B Y, Zhang, C C, Zhang, D H, Zhang, H H, Zhang, H Y, Zhang, J, Zhang, J G, Zhang, J Q, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, L, Zhang, S H, Zhang, T R, Zhang, X J, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Y S, Zhang, Z P, Zhang, Z Y, Zhang, G, Zhao, H S, Zhao, J W, Zhao, K X, Zhao, Lei, Zhao, Ling, Zhao, M G, Zhao, Q, Zhao, S J, Zhao, T C, Zhao, X H, Zhao, Y B, Zhao, Z G, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, Y H, Zheng, Z P, Zheng, B, Zhong, J, Zhong, L, Zhou, X K, Zhou, X R, Zhou, C, Zhu, K, Zhu, K J, Zhu, S H, Zhu, X L, Zhu, X W, Zhu, Y M, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, B S, Zou, J H, Zou, and J X, Zuo
Abstract: Based on 106×10(6)ψ(3686) events collected with the BESIII detector at the BEPCII facility, a partial wave analysis of ψ(3686)→ppπ0 is performed. The branching fraction of this channel has been determined to be B(ψ(3686)→ppπ0)=(1.65±0.03±0.15)×10(-4). In this decay, 7 N* intermediate resonances are observed. Among these, two new resonances, N(2300) and N(2570) are significant, one 1/2+ resonance with a mass of 2300(-30-0)(+40+109) MeV/c2 and width of 340(-30-58)(+30+110) MeV/c2, and one 5/2- resonance with a mass of 2570(-10-10)(+19+34) MeV/c2 and width of 250(-24-21)(+14+69) MeV/c2. For the remaining 5 N* intermediate resonances [N(1440), N(1520), N(1535), N(1650) and N(1720)], the analysis yields mass and width values that are consistent with those from established resonances.
Published: 2012

224. Two-photon widths of theχc0,2states and helicity analysis forχc2→γγ

Author: M. Maggiora, Ling Zhao, Tao Luo, Y. F. Wang, C. Nicholson, Z. Y. He, Z. L. Hou, Yang Yang, B. X. Yu, H. B. Li, X. Y. Ma, M. Ullrich, W. X. Gong, A. G. Denig, C. L. Luo, Zhiqing Liu, Yuanbo Chen, X. L. Luo, G. M. Xu, C. Z. Yuan, C. C. Zhang, H. J. Lu, J. G. Lu, B. Zhong, L. B. Guo, H. S. Chen, J. F. Chang, Lei Li, Y. Ding, Shujun Zhao, K. Goetzen, W. Kuehn, H. L. Dai, Igor Boyko, Shan Wang, F. E. Maas, Ulrich Wiedner, C. H. Li, G. F. Xu, T. Ma, Yanping Huang, S. Jin, W. B. Yan, S. Ma, G. R. Lu, X. Cai, X. R. Li, X. Y. Song, J. M. Bian, Zhenyu Zhang, W. Lai, D. Toth, T. Hu, M. Qi, Z. A. Zhu, Sanfeng Wu, G. S. Varner, Hang Liu, P. Wang, M. N. Achasov, E. H. Thorndike, X. L. Wang, B. Wang, X. T. Liao, Michael Werner, J. S. Huang, C. X. Liu, Xiangdong Ruan, S. Pacetti, D. H. Sun, H. L. Tian, F. Li, X. H. Liu, Lei Zhao, Guangming Huang, Z. Ning, Q. J. Xu, A. Calcaterra, Z. G. Zhao, L. S. Wang, C. S. Ji, F. C. Ma, J. C. Chen, M. L. Chen, Brent J. Liu, M. Z. Wang, J. P. Dai, X. Q. Li, Z. Wu, Z. J. Sun, M. Greco, L. G. Xia, H. Loehner, Yu-Bin Liu, H. Liang, Y. Nefedov, X. L. Ji, X. N. Li, L. Zhang, H. H. Liu, C. L. Ma, Y. X. Yang, J. C. Li, Kun Liu, Ke Wang, J. K. C. Leung, X. K. Zhou, T. Yang, J. Zhuang, Nasser Kalantar-Nayestanaki, C. Morales Morales, M. Pelizaeus, X. Sun, H. H. Zhang, M. X. Luo, Rinaldo Baldini Ferroli, J. F. Qiu, D. V. Dedovich, Q. P. Ji, N. B. Li, R. Poling, V. V. Bytev, H. X. Yang, H.S. Xu, M. R. Shepherd, S. H. Zhang, X. Y. Shen, Fenfen An, X. Q. Hao, X. Tang, J. F. Sun, Zhenli Xu, Q. Zhao, S. P. Yu, G. A. Chelkov, Talib Hussain, Y. Z. Sun, Chun S. J. Pun, S. B. Liu, C. Motzko, T. C. Zhao, K. Y. Liu, K. X. Zhao, C. Geng, Y. Zeng, M. Y. Dong, L. L. Jiang, Zhe Sun, Y. G. Xie, Y. F. Liang, D. P. Jin, S. J. Chen, Gang Zhao, J. Min, H. B. Liu, G. X. Sun, Li Yan, Julian Schulze, S. X. Du, F. A. Harris, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, O. Bondarenko, X. F. Wang, Xiao-Tong Lu, Joong-Won Park, M. G. Zhao, J. P. Liu, L. Fava, J. Q. Zhang, Y. M. Zhu, Z. Jiao, Fu-Hu Liu, D. H. Zhang, S. L. Olsen, R. A. Briere, P. L. Liu, J. H. Zou, X. S. Jiang, N. Wu, Krisztian Peters, Y. H. Zheng, H. L. Ma, Xiaobo Zhu, Cong-Feng Qiao, D. M. Li, Q. M. Ma, L. K. Jia, K. L. He, Z. G. Wang, H. Y. Zhang, N. Yu. Muchnoi, Yin Xu, P. L. Wang, Qi-Wen Lü, S. S. Sun, J. G. Messchendorp, Q. L. Xiu, B. Q. Wang, Heng-Yun Ye, C. P. Shen, J. X. Zuo, L. H. Wu, Shou-hua Zhu, Y. Yuan, Y. S. Zhu, Y. H. Zhang, G. F. Chen, J. Z. Bai, J. Y. Zhang, Q. G. Wen, Y. J. Mao, Y.N. Gao, Z. Y. Wang, M. Bertani, Jürgen Becker, B. S. Zou, G. R. Liao, R. E. Mitchell, Y. K. Heng, Zhiqiang Liu, Miao He, Zujian Wang, A. Q. Guo, Y. P. Chu, L. P. Zhou, K. Li, Y. M. Ma, Y. S. Zhang, Fang Liu, X. B. Ji, W. Gradl, Z. P. Mao, F. F. Jing, H. P. Cheng, J. Fang, I. Denysenko, B. Y. Zhang, Y. Zhang, Q. An, Z. H. Qin, B. Spruck, X. H. Zhao, Wei Wu, A. Zhemchugov, Chuan Liu, W. L. Yuan, Q. Ouyang, W. G. Li, S. Spataro, Y. Q. Wang, X. P. Xu, C. Zhu, H. M. Liu, J. F. Hu, S. S. Fang, G. F. Cao, G. Li, Y. B. Zhao, X. T. Huang, M. Ablikim, K. J. Zhu, Y. B. Liu, Xuantong Zhang, C. D. Fu, A. A. Zafar, G. Rong, C. Q. Feng, Z. Y. Deng, Xingguo Li, C. J. Tang, Y. P. Lu, Q. A. Malik, Kai Liu, Jie Yu, Z. P. Zheng, T. J. Min, F. Feldbauer, Feng Liu, Chang Liu, T. R. Zhang, Y. L. Han, Y. T. Liang, HongSheng Zhao, Q. J. Wang, Jianping Zheng, M. Lv, J. G. Zhang, Z. Xue, Z. B. Li, M. Destefanis, J. Zhang, M. Kavatsyuk, B. X. Zhang, H. Mao, J. B. Jiao, J. Zhong, Yao Wang, Zhiyong Zhang, X. Liu, Z. J. Xiao, Y. P. Guo, S. Qian, Jialun Ping, L. L. Wang, X. Y. Zhang, Y. J. Sun, E. Boger, D. J. Ambrose, M. H. Gu, H. Y. Sheng, C. X. Yu, B. Zheng, R. G. Ping, E. Prencipe, Qun-Yao Wang, W. D. Li, Feng Xue, Cui Li, Z. A. Liu, Y. Ban, P. Weidenkaff, S. L. Li, Y. H. Yan, J. W. Zhao, D. Cronin-Hennessy, S. P. Wen, X. S. Qin, T. Held, X. R. Zhou, J. L. Fu, Cheng Li, I. B. Nikolaev, K. H. Rashid, M. Shao, Y. T. Gu, Q. J. Li, Z. H. An, A. Sarantsev, D. H. Wei, J. S. Lange, B. Huang, X. H. Mo, M. H. Ye, L. Y. Dong, H. M. Hu, W. M. Ding, Nicolas Berger, J. W. Zhang, A. Zallo, Yang Qin, and Y. H. Guan
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Annihilation, Electron–positron annihilation, Lambda, Width ratio, Helicity, Event generator, Gamma gamma
Abstract: Based on a data sample of 106 X 10(6) psi' events collected with the BESIII detector, the decays psi' -> gamma chi(c0,2), chi(c0,2) -> gamma gamma are studied to determine the two-photon widths of the chi(c0,2) states. The two-photon decay branching fractions are determined to be B(chi(c0) -> gamma gamma) = (2.24 +/- 0.19 +/- 0.12 +/- 0.08) X 10(-4) and B(chi(c2) -> gamma gamma) = (3.21 +/- 0.18 +/- 0.17 +/- 0.13) X 10(-4) From these, the two-photon widths are determined to be Gamma(gamma gamma)(chi(c0)) = (2.33 +/- 0.20 +/- 0.13 +/- 0.17) keV, Gamma(gamma gamma)(chi(c2)) = (0.63 +/- 0.04 +/- 0.04 +/- 0.04) keV, and R = Gamma(gamma gamma)(chi(c2))/Gamma(gamma gamma)(chi(c0)) = 0.271 +/- 0.029 +/- 0.013 +/- 0.027, where the uncertainties are statistical, systematic, and those from the PDG B(psi' -> gamma chi(c0,2)) and Gamma(chi(c0,2)) errors, respectively. The ratio of the two-photon widths for helicity lambda = 0 and helicity lambda = 2 components in the decay chi -> gamma gamma is measured for the first time to be f(0/2) = Gamma(lambda=0)(gamma gamma)(chi(c2))/Gamma(lambda=2)(gamma gamma)(chi(c2)) = 0.00 +/- 0.02 +/- 0.02.
Published: 2012

225. Amplitude analysis ofD0→K+K−π+π−

Author: D. Riley, G. Tatishvili, Werner Sun, Lei Zhang, D. L. Hartill, D. Z. Besson, Ting Xiao, H. Muramatsu, V. E. Kuznetsov, Hans J. Vogel, Marina Artuso, P. U. E. Onyisi, Mark Smith, G. Wilkinson, Souvik Das, P. Naik, Anders Ryd, Ping Zhou, L. K. Gibbons, D. Cronin-Hennessy, K. Randrianarivony, J. Zhu, T. J. Gershon, D. H. Miller, S. Blusk, M. Kornicer, K. M. Ecklund, L. J. Pearson, C. S. Park, T. K. Pedlar, K. K. Seth, A. Powell, Jonas Rademacker, D. Peterson, R. Ehrlich, Juliet Ritchie Patterson, L. Martin, P. Spradlin, D. M. Asner, G. S. Adams, A. Lincoln, D. L. Kreinick, J. Insler, J. Napolitano, E. H. Thorndike, S. W. Gray, Xin Shi, John Yelton, J. Hietala, R. A. Briere, K. W. Edwards, S. Mehrabyan, S. Stone, G. Bonvicini, J. P. Alexander, T. Skwarnicki, Sean A Dobbs, Mats A Selen, S. Ricciardi, A. J. Sadoff, I. P. J. Shipsey, P. Rubin, J. Y. Ge, James E Wiss, Jonathan L. Rosner, R. E. Mitchell, B. K. Heltsley, Z. Metreveli, C. Thomas, B. Xin, D. G. Cassel, R. Mountain, N. Lowrey, D. Cinabro, J. Libby, and Amiran Tomaradze
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Amplitude, 010308 nuclear & particles physics, 0103 physical sciences, Analytical chemistry, Pi, CP violation, 010306 general physics, 01 natural sciences
Abstract: The first flavor-tagged amplitude analysis of the decay D0 to the self-conjugate final state K+K-pi+pi- is presented. Data from the CLEO II.V, CLEO III, and CLEO-c detectors are used, from which around 3000 signal decays are selected. The three most significant amplitudes, which contribute to the model that best fits the data, are phirho0, K1(1270)+-K-+, and non-resonant K+K-pi+pi-. Separate amplitude analyses of D0 and D0-bar candidates indicate no CP violation among the amplitudes at the level of 5% to 30% depending on the mode. In addition, the sensitivity to the CP-violating parameter gamma/phi3 of a sample of 2000 B+ -> D0-tilde(K+K-pi+pi-)K+ decays, where D0-tilde is a D0 or D0-bar, collected at LHCb or a future flavor facility, is estimated to be (11.3 +/- 0.3) degrees using the favored model.
Published: 2012

226. Measurements of the Mass and Width of theηcUsing the Decayψ(3686)→γηc

Author: P. L. Wang, X. L. Luo, HongSheng Zhao, Q. J. Wang, R. Poling, A. Calcaterra, C. S. Ji, X. L. Ji, Jianping Zheng, H. Liang, T. Yang, M. Lv, S. P. Yu, G. A. Chelkov, Z. Xue, Talib Hussain, Zong-Ping Zheng, M. Destefanis, Xiaobo Zhu, Xiangdong Ruan, J. Z. Bai, Meng Wang, N. Yu. Muchnoi, Qi-Wen Lü, Heng-Yun Ye, W. G. Li, S. X. Du, Y. H. Zhang, Kaihui Liu, Y. P. Guo, J. K. C. Leung, G. R. Liao, Z. A. Liu, D. Alberto, Q. A. Malik, K. J. Zhu, Xuantong Zhang, Q. G. Wen, M. H. Ye, Y. P. Chu, X. B. Ji, C. F. Qiao, F. F. Jing, Zhiqiang Liu, Miao He, Zhiyong Zhang, X. Liu, S. Spataro, X. P. Xu, C. Zhu, Z. Y. Wang, Ke Wang, M. Pelizaeus, Y. Ban, L. P. Zhou, W. L. Yuan, Q. Ouyang, Z. J. Xiao, X. Sun, J. M. Bian, E. H. Thorndike, L. Y. Dong, Z. P. Mao, Zhenyu Zhang, W. Lai, M. Y. Dong, Shan Wang, M. Bertani, Q. P. Ji, S. J. Zhao, H. P. Cheng, J. Fang, J. F. Hu, F. Li, F. C. Ma, X. H. Liu, Y. H. Guan, S. P. Wen, Y. B. Liu, X. S. Qin, V. V. Bytev, G. S. Varner, X. Q. Hao, Xiujuan Tang, G. F. Cao, S. Qian, Jialun Ping, Fenfen An, J. C. Chen, Hang Liu, S. H. Zhang, X. L. Li, N. B. Li, X. R. Zhou, J. L. Fu, J. P. Dai, Nasser Kalantar-Nayestanaki, M. Maggiora, M. L. Chen, Ling Zhao, T. C. Zhao, Cheng Li, C. L. Ma, I. B. Nikolaev, Y. Ding, J. F. Qiu, E. Boger, K. H. Rashid, H. X. Yang, M. Shao, Y. T. Gu, Shou-hua Zhu, Lei Zhao, Z. Y. He, Z. L. Hou, J. H. Zou, Tao Luo, G. R. Lu, J. S. Huang, T. J. Min, Chun S. J. Pun, Q. J. Li, J. B. Jiao, Yang Yang, J. Zhong, D. J. Ambrose, Z. H. An, Xian Lun Zhu, B. X. Yu, Y. Nefedov, Y. T. Liang, C. Geng, B. S. Zou, Q. L. Xiu, M. G. Zhao, Y. P. Lu, X. F. Wang, Huihui Liu, S. S. Sun, J. P. Liu, A. Sarantsev, D. H. Wei, Z. A. Zhu, J. S. Lange, Jiangchao Li, M. H. Gu, H. S. Chen, Z. G. Wang, H. Y. Sheng, J. G. Messchendorp, H. Y. Zhang, G. X. Sun, Li Yan, Huirun Chen, J. X. Zuo, Julian Schulze, Yi-Fang Zhao, D. H. Sun, Jürgen Becker, Xing Lu, Yong Liu, G. F. Chen, H. L. Dai, Igor Boyko, Joong-Won Park, J. F. Sun, Q. M. Ma, J. Y. Zhang, J. Min, G. M. Xu, Z. Jiao, Fu-Hu Liu, Z. B. Li, C. X. Yu, A. Q. Guo, R. E. Mitchell, X. T. Liao, H. Xu, C. Z. Yuan, J. Zhuang, Y. K. Heng, Y. Yuan, B. Huang, X. H. Mo, L. S. Wang, D. H. Zhang, H. M. Liu, G. Li, H. M. Hu, Sai-Juan Chen, Nicolas Berger, Q. J. Xu, W. B. Yan, B. Zheng, R. G. Ping, M. N. Achasov, J. W. Zhang, M. Qi, H. L. Tian, C. D. Fu, Zhihao Xu, C. Q. Feng, W. D. Li, Chuan Liu, L. L. Wang, Z. Y. Deng, X. N. Li, S. Pacetti, L. L. Jiang, A. Zallo, Y. J. Sun, Yang Gao, Y. S. Zhu, Cui Li, K. Li, S. B. Liu, Fang Liu, J. Zhang, M. Kavatsyuk, Q. Liu, Qun-Yao Wang, H. B. Liu, Xueyong Shen, H. Mao, B. Y. Zhang, Zujian Wang, Y. S. Zhang, Zhi-Jun Sun, Y. H. Zheng, D. Cronin-Hennessy, B. Spruck, X. H. Zhao, H. J. Lu, J. G. Lu, Yin Xu, H. L. Ma, D. M. Li, Yulei Han, C. J. Tang, Kunlun He, L. H. Wu, B. X. Zhang, G. F. Xu, T. Hu, S. Jin, B. Wang, Y. X. Yang, Feng Liu, Chang Liu, Guangming Huang, M. R. Shepherd, T. R. Zhang, Z. Wu, Xie-Yan Song, N. Wu, Q. Zhao, Krisztian Peters, Y. Z. Sun, Y. H. Yan, Z. G. Zhao, K. Goetzen, W. Kuehn, W. L. Ding, H. Loehner, L. Zhang, H. H. Liu, B. Q. Wang, Gang Zhao, Shisong Fang, H. H. Zhang, Y. J. Mao, C. P. Shen, Yao Wang, M. X. Luo, D. V. Dedovich, O. Bondarenko, Y. Zhang, J. Q. Zhang, Brent J. Liu, Q. An, Yuehong Xie, Wei Wu, A. Zhemchugov, H. B. Li, C. L. Luo, Yuanbo Chen, S. Ma, D. Toth, C. C. Zhang, B. Zhong, L. B. Guo, Y. Zeng, Zhe Sun, Lei Li, Ulrich Wiedner, T. Ma, Yanping Huang, Y. B. Chen, J. Z. Zhang, X. Q. Li, Y. Q. Wang, C. X. Liu, X. T. Huang, M. Ablikim, A. A. Zafar, G. Rong, Z. Ning, S. L. Li, R. B. Ferroli, Xiao-Yang Zhang, X. K. Zhou, Zhiqing Liu, J. F. Chang, X. L. Wang, X. Cai, X. R. Li, I. Denysenko, Y. F. Wang, Jingwei Zhao, Y. F. Liang, D. P. Jin, X. Y. Ma, W. X. Gong, F. A. Harris, C. H. Li, S. L. Olsen, R. A. Briere, X. S. Jiang, L. K. Jia, M. Greco, and K. Y. Liu
Subjects: Physics, Meson, Detector, Radiative transfer, General Physics and Astronomy, Singlet state, State (functional analysis), Atomic physics, Measure (mathematics), Storage ring, Line (formation)
Abstract: The mass and width of the lowest-lying S-wave spin singlet charmonium state, the η(c), are measured using a data sample of 1.06×10(8) ψ(3686) decays collected with the BESIII detector at the BEPCII storage ring. We use a model that incorporates full interference between the signal reaction, ψ(3686)→γη(c), and a nonresonant radiative background to describe the line shape of the η(c) successfully. We measure the η(c) mass to be 2984.3±0.6±0.6 MeV/c(2) and the total width to be 32.0±1.2±1.0 MeV, where the first errors are statistical and the second are systematic.
Published: 2012

227. Studies of the decaysD0→KS0K−π+andD0→KS0K+π−

Author: Anders Ryd, D. L. Kreinick, A. J. Sadoff, G. S. Adams, D. L. Hartill, Ian Shipsey, N. Lowrey, Xin Shi, H. Muramatsu, D. Cinabro, Jonathan L. Rosner, Tomasz Skwarnicki, Karl Matthew Ecklund, D. G. Cassel, M. Kornicer, Z. Metreveli, C. Thomas, Jonas Rademacker, J. Y. Ge, E. H. Thorndike, G. Tatishvili, Werner Sun, James E Wiss, K. W. Edwards, S. W. Gray, Hans J. Vogel, Lei Zhang, T. J. Gershon, P. Rubin, Mark Smith, Sean A Dobbs, G. Bonvicini, J. P. Alexander, Peter Onyisi, C. S. Park, J. Libby, R. A. Briere, D. Riley, David M. Asner, Peng Zhou, Jing Wang, R. E. Mitchell, D. Z. Besson, D. H. Miller, Ting Xiao, V. E. Kuznetsov, B. Xin, Kamal K. Seth, A. Powell, Amiran Tomaradze, S. Ricciardi, L. K. Gibbons, D. R. Johnson, R. Ehrlich, Mats A Selen, S. Malde, J. Napolitano, G. Wilkinson, S. Blusk, Souvik Das, Juliet Ritchie Patterson, John Yelton, J. Hietala, D. Cronin-Hennessy, Marina Artuso, K. Randrianarivony, L. J. Pearson, T. K. Pedlar, J. Insler, L. Martin, R. Mountain, D. Peterson, Sheldon Stone, S. Mehrabyan, and P. Naik
Subjects: Combinatorics, Physics, Nuclear and High Energy Physics, Coherence factor, Meson, 010308 nuclear & particles physics, Branching fraction, Partial wave analysis, 0103 physical sciences, 010306 general physics, 01 natural sciences
Abstract: The first measurements of the coherence factor ${R}_{{K}_{S}^{0}K\ensuremath{\pi}}$ and the average strong-phase difference ${\ensuremath{\delta}}_{D}^{{K}_{S}^{0}K\ensuremath{\pi}}$ in ${D}^{0}\ensuremath{\rightarrow}{K}_{S}^{0}{K}^{\ensuremath{\mp}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ decays are reported. These parameters can be used to improve the determination of the unitary triangle angle $\ensuremath{\gamma}$ in ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}\stackrel{\texttildelow{}}{D}{K}^{\ensuremath{-}}$ decays, where $\stackrel{\texttildelow{}}{D}$ is either a ${D}^{0}$ or a ${\overline{D}}^{0}$ meson decaying to the same final state, and also in studies of charm mixing. The measurements of the coherence factor and strong-phase difference are made using quantum-correlated, fully reconstructed ${D}^{0}{\overline{D}}^{0}$ pairs produced in ${e}^{+}{e}^{\ensuremath{-}}$ collisions at the $\ensuremath{\psi}(3770)$ resonance. The measured values are ${R}_{{K}_{S}^{0}K\ensuremath{\pi}}=0.73\ifmmode\pm\else\textpm\fi{}0.08$ and ${\ensuremath{\delta}}_{D}^{{K}_{S}^{0}K\ensuremath{\pi}}=(8.3\ifmmode\pm\else\textpm\fi{}15.2)\ifmmode^\circ\else\textdegree\fi{}$ for an unrestricted kinematic region and ${R}_{{K}^{*}K}=1.00\ifmmode\pm\else\textpm\fi{}0.16$ and ${\ensuremath{\delta}}_{D}^{{K}^{*}K}=(26.5\ifmmode\pm\else\textpm\fi{}15.8)\ifmmode^\circ\else\textdegree\fi{}$ for a region where the combined ${K}_{S}^{0}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ invariant mass is within $100\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ of the ${K}^{*}(892{)}^{\ifmmode\pm\else\textpm\fi{}}$ mass. These results indicate a significant level of coherence in the decay. In addition, isobar models are presented for the two decays, which show the dominance of the ${K}^{*}(892{)}^{\ifmmode\pm\else\textpm\fi{}}$ resonance. The branching ratio $\mathcal{B}({D}^{0}\ensuremath{\rightarrow}{K}_{S}^{0}{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})/\phantom{\rule{0ex}{0ex}}\mathcal{B}({D}^{0}\ensuremath{\rightarrow}{K}_{S}^{0}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+})$ is determined to be $0.592\ifmmode\pm\else\textpm\fi{}0.044(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.018(\mathrm{syst})$, which is more precise than previous measurements.
Published: 2012

228. Search for a light exotic particle inJ/ψradiative decays

Author: P. L. Wang, Z. A. Liu, X. L. Luo, J. Y. Zhang, J. Min, Z. Jiao, X. L. Wang, D. Dedovich, Z. Ning, X. K. Zhou, S. L. Li, R. B. Ferroli, Y. P. Guo, J. K. C. Leung, J. H. Zou, D. P. Jin, Y. S. Zhang, G. X. Sun, W. G. Li, X. T. Liao, J. B. Jiao, Y. P. Chu, Shouguang Jin, X. R. Zhou, Junguang Lu, C. F. Qiao, J. L. Fu, H. S. Zhao, Cheng Li, Y. P. Huang, H. Xu, X. H. Mo, B. Wang, Z. Y. Deng, Michael Werner, G. M. Huang, Q. J. Wang, J. P. Liu, X. Cai, T. Held, H. J. Lu, Yi-Fang Zhao, F. C. Ma, J. C. Chen, Q. J. Li, Zhiqing Liu, H. M. Liu, X. Q. Hao, Y. J. Sun, Y. Xu, N. B. Li, Y. X. Yang, H. P. Cheng, G. S. Varner, Q Zhao, S. Spataro, Y. J. Mao, F. F. An, Y. H. Guan, A. Q. Guo, B. Huang, X. H. Liu, S. H. Zhang, A. Zhemchugov, Y. Q. Wang, Wei Li, H. Ye, Jianping Zheng, L. S. Wang, N. Kalantar-Nayestanaki, X. N. Li, M. H. Ye, Jie Yu, K. H. Rashid, Hang Liu, H. Y. Sheng, X. S. Qin, Guo-Ming Chen, M. Ablikim, A. A. Zafar, D. H. Zhang, Fang Liu, X. Liu, J. F. Hu, Xing Lu, W. L. Yuan, M. Lv, H. H. Zhang, Lei Zhou, J. Zhong, Z. L. Hou, K. J. Zhu, M. Greco, K. Y. Liu, K. Li, U. Wiedner, Chun S. J. Pun, Y. P. Lu, G. R. Liao, Qun-Yao Wang, Z. A. Zhu, Chang-Zheng Yuan, C. L. Ma, Ling Zhao, X. D. Ruan, Zhibing Li, D. Toth, M. Pelizaeus, M. G. Zhao, E. H. Thorndike, Yao Wang, W. Gradl, X. F. Wang, Huihui Liu, R. E. Mitchell, Xie-Yan Song, X. P. Xu, Zhenyu Zhang, W. Lai, Z. J. Xiao, D. M. Li, S. G. Wang, B. Y. Zhang, C. L. Luo, L. Zhang, J. Q. Zhang, Lei Zhao, Z. Y. He, J. P. Dai, H. M. Hu, Q. J. Xu, Q. Ouyang, Yuanbo Chen, Tao Hu, Y. H. Zheng, C. X. Yu, I. B. Nikolaev, Sai-Juan Chen, Chunyan Zhu, S. J. Zhao, Yang Yang, J. G. Messchendorp, A. Sarantsev, S. B. Liu, J. S. Lange, J. S. Huang, Y. Z. Sun, S. P. Wen, Y. F. Liang, Jingwei Zhao, K. Peters, D. H. Wei, D. H. Sun, L. B. Guo, Lei Li, Z. P. Zheng, M. Bertani, J. F. Sun, Z. Xue, Q. L. Xiu, H. Loehner, Shaodan Ma, Tao Luo, B. Zhong, Z. P. Zhang, T. Ma, A. Zallo, Y. Nefedov, J. Zhuang, Y. B. Liu, X. D. Sun, L. H. Wu, O. Bondarenko, H. X. Yang, L. Fava, M. X. Luo, E. Prencipe, Xian Lun Zhu, C. D. Fu, Y. Yuan, Qingming Ma, H. H. Liu, J. C. Li, Shisong Fang, L. G. Xia, Y. S. Zhu, J. F. Qiu, Q. Ji, Chang Liu, X. L. Ji, Feng Liu, L. L. Wang, B. X. Zhang, Xuantong Zhang, X. Y. Zhang, M. Wang, H. L. Dai, A. Calcaterra, L. Y. Dong, B. Zheng, S. H. Zhu, M. L. Chen, S. X. Du, X. B. Ji, G. M. Xu, Niklaus Berger, N. Wu, T. R. Zhang, H. S. Chen, K. Goetzen, M. H. Gu, S. P. Yu, Y. Ban, Hua-Bin Li, Q. A. Malik, Zhihao Xu, Chuan Liu, Yong Liu, J. Schulze, F. F. Jing, G. Li, G. Chelkov, Zhiqiang Liu, Miao He, J. M. Bian, C. Geng, X. L. Li, Y. T. Liang, M. R. Shepherd, Feng Xue, Cui Li, W. M. Ding, G. F. Xu, T. C. Zhao, Y. Ding, Q. An, R. G. Ping, C. Morales, M. N. Achasov, J. X. Zuo, J. L. Ping, R. Poling, Talib Hussain, S. Qian, S. S. Sun, Y. Zhang, Yuehong Xie, J. Zhang, Wei Wu, M. Kavatsyuk, Xiang Li, Y. H. Yan, W. Kuehn, T. J. Min, S. X. Wu, Z. P. Mao, X. H. Zhao, Xiaobo Zhu, Z. H. Qin, Xiujuan Tang, N. Yu. Muchnoi, G. Rong, H. L. Ma, M. Shao, Y. H. Zhang, Q. W. Lu, C. S. Ji, Xingtao Huang, Q. G. Wen, Z. G. Zhao, T. Yang, Z. Y. Wang, M. Maggiora, A. Denig, X. R. Li, V. Bytev, Y. Qin, I. Denysenko, E. Boger, S. Pacetti, C. X. Liu, B. X. Yu, M. U. Ulrich, Y. M. Zhu, Guangyu Zhao, Y. K. Heng, J. W. Zhang, J. Fang, J. F. Chang, G. F. Cao, X. S. Jiang, H. B. Liu, B. S. Zou, H. Mao, P. Weidenkaff, Daniel P Cronin-Hennessy, Z. H. An, B. Spruck, F. Feldbauer, M. Qi, J. K. Becker, Yang Gao, Z. Wu, D. J. Ambrose, H. L. Tian, C. J. Tang, C. Motzko, S. L. Olsen, G. R. Lu, K. X. Zhao, Joong-Won Park, W. B. Yan, L. L. Jiang, Y. F. Wang, F. A. Harris, X. Y. Ma, Chunmei Zhang, Xueyong Shen, Zujian Wang, Zhi-Jun Sun, C. H. Li, J. Z. Bai, Y. T. Gu, R. A. Briere, Li Yan, L. K. Jia, Fu-Hu Liu, M. Y. Dong, Feng Li, Hai Liang, Yulei Han, Kunlun He, I. Boyko, Y. Zeng, Brent J. Liu, M. Destefanis, W. X. Gong, C. Q. Feng, B. Q. Wang, Y. Ma, C. P. Shen, Zhe Sun, Y. B. Chen, J. Z. Zhang, K. Wang, F. E. Maas, Z. G. Wang, H. Y. Zhang, and KVI - Center for Advanced Radiation Technology
Subjects: BOSONS, Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), ENERGIES, Electron–positron annihilation, GRAVITINO, FOS: Physical sciences, Supersymmetry, High Energy Physics - Experiment, law.invention, Nuclear physics, Pseudoscalar, High Energy Physics - Experiment (hep-ex), law, Sgoldstino, Radiative transfer, High Energy Physics::Experiment, Collider, Boson
Abstract: Using a data sample containing 1.06x10^8 psi' events collected with the BESIII detector at the BEPCII electron-positron collider, we search for a light exotic particle X in the process psi' -> pi^+ pi^- J/psi, J/psi -> gamma X, X -> mu^+ mu^-. This light particle X could be a Higgs-like boson A^0, a spin-1 U boson, or a pseudoscalar sgoldstino particle. In this analysis, we find no evidence for any mu^+mu^- mass peak between the mass threshold and 3.0 GeV/c^2. We set 90%-confidence-level upper limits on the product-branching fractions for J/psi -> gamma A^0, A^0 -> mu^+ mu^- which range from 4x10^{-7} to 2.1x10^{-5}, depending on the mass of A^0, for M(A^0), 7 pages, 3 figures, submitted to Physical Review D
Published: 2012

229. First Observation ofη(1405)Decays intof0(980)π0

Author: C. S. Ji, H. Liang, T. Yang, X. D. Ruan, M. Y. Dong, J. H. Zou, N. B. Li, M. Qi, H. L. Tian, S. S. Sun, Xiao-Tong Lu, J. M. Bian, Yin Xu, L. Y. Dong, L. H. Wu, Jürgen Becker, Z. Ning, X. L. Ji, S. P. Yu, G. A. Chelkov, J. B. Jiao, S. J. Zhao, W. Lai, R. E. Mitchell, Shan Wang, Talib Hussain, G. S. Varner, Hang Liu, Y. G. Xie, Y. F. Wang, H. L. Ma, M. H. Gu, S. X. Du, J. Zhong, Q. J. Xu, J. C. Chen, Q. L. Xiu, J. Z. Bai, H. Y. Sheng, D. M. Li, Y. H. Zheng, X. Wan, C. X. Yu, X. Y. Ma, W. X. Gong, Xiaobo Zhu, Cong-Feng Qiao, Zhiqiang Liu, Miao He, N. Yu. Muchnoi, Nasser Kalantar-Nayestanaki, B. Zheng, R. G. Ping, L. P. Zhou, Heng-Yun Ye, Y. H. Zhang, G. R. Liao, Q. G. Wen, C. H. Li, I. B. Nikolaev, K. H. Rashid, M. Bertani, Zhiqing Liu, Z. A. Liu, Z. P. Mao, H. J. Lu, M. Shao, Y. T. Gu, W. B. Yan, Y. X. Yang, Y. P. Chu, X. B. Ji, H. P. Cheng, J. Fang, S. B. Liu, Y. Nefedov, F. F. Jing, Z. Y. Wang, J. G. Lu, F. Li, M. N. Achasov, W. L. Yuan, B. Spruck, E. H. Thorndike, Y. Ban, J. F. Chang, S. Qian, Q. An, Jialun Ping, Q. Ouyang, Q. J. Li, Q. P. Ji, Y. T. Liang, S. P. Wen, X. H. Liu, S. S. Fang, X. Q. Li, X. Tang, Q. M. Ma, M. R. Shepherd, S. Pacetti, Y. B. Zhao, N. Wu, Krisztian Peters, Y. B. Liu, L. L. Wang, X. Y. Zhang, X. S. Qin, X. R. Zhou, J. P. Dai, A. Zallo, F. C. Ma, J. L. Fu, X. Cai, P. L. Wang, Z. H. An, M. G. Zhao, Y. Q. Wang, S. H. Zhang, M. Greco, X. Y. Shen, A. Sarantsev, Cheng Li, Shou-hua Zhu, M. Maggiora, Ling Zhao, C. L. Ma, X. R. Li, A. Zhemchugov, X. T. Huang, Q. Zhao, X. L. Luo, D. H. Wei, Y. Z. Sun, J. S. Lange, Lei Zhao, Z. Y. He, Z. L. Hou, Y. Yuan, Y. J. Sun, E. Boger, Y. S. Zhu, Y. Ding, A. A. Zafar, Z. G. Wang, H. Y. Zhang, K. Y. Liu, Z. B. Li, G. Rong, Yang Yang, Y. H. Guan, C. Geng, J. X. Zuo, G. F. Chen, J. F. Qiu, K. Li, T. Hu, G. R. Lu, J. Zhang, Fang Liu, J. Min, B. S. Zou, Z. A. Zhu, H. B. Liu, S. L. Olsen, R. A. Briere, J. Y. Zhang, X. S. Jiang, B. Huang, G. M. Xu, I. Denysenko, X. H. Mo, L. S. Wang, M. Kavatsyuk, C. J. Tang, D. H. Sun, Gang Zhao, T. J. Min, K. J. Zhu, L. K. Jia, Y. K. Heng, M. H. Ye, C. Z. Yuan, K. L. He, L. L. Jiang, Q. Liu, Qun-Yao Wang, Zhiyong Zhang, B. Wang, B. Y. Zhang, X. Liu, Xuantong Zhang, Y. P. Lu, M. Z. Wang, Y. P. Guo, S. J. Chen, B. X. Zhang, Q. A. Malik, F. A. Harris, Guangming Huang, G. Li, O. Bondarenko, Y. N. Gao, Y. Zhang, Z. Wu, C. D. Fu, C. Q. Feng, Z. P. Zheng, Wei Wu, Z. Y. Deng, Xingguo Li, B. Q. Wang, Y. L. Han, X. K. Zhou, HongSheng Zhao, Q. J. Wang, J. K. C. Leung, Jianping Zheng, M. Lv, Z. Xue, M. Destefanis, C. P. Shen, Feng Liu, Chang Liu, J. Q. Zhang, Z. P. Zhang, M. Ablikim, T. R. Zhang, S. L. Li, Y. H. Yan, H. M. Hu, Zujian Wang, D. Cronin-Hennessy, H. Mao, Nicolas Berger, J. W. Zhang, Y. S. Zhang, Yao Wang, X. Q. Hao, X. H. Zhao, Brent J. Liu, D. J. Ambrose, J. F. Sun, Y. Zeng, Zhe Sun, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, G. X. Sun, Li Yan, W. D. Li, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Cui Li, Jingwei Zhao, Y. F. Liang, D. P. Jin, H. B. Li, C. L. Luo, Y. J. Mao, Z. J. Xiao, H. X. Yang, H.S. Xu, Yuanbo Chen, Chun S. J. Pun, C. C. Zhang, B. Zhong, L. B. Guo, X. L. Wang, X. F. Wang, Huihui Liu, J. P. Liu, M. L. Chen, Lei Li, W. L. Ding Ding, J. G. Messchendorp, Ulrich Wiedner, A. Q. Guo, T. Ma, Yanping Huang, H. H. Liu, J. C. Li, J. Zhuang, M. X. Luo, D. V. Dedovich, Chuan Liu, W. G. Li, S. Spataro, X. P. Xu, C. Zhu, Zhenli Xu, K. Goetzen, W. Kuehn, H. M. Liu, J. F. Hu, G. F. Cao, A. Calcaterra, Z. G. Zhao, Tao Luo, H. H. Zhang, Z. J. Sun, B. X. Yu, H. Loehner, L. Zhang, S. Ma, D. Toth, H. S. Chen, J. S. Huang, Yong Liu, H. L. Dai, Igor Boyko, C. X. Liu, Ke Wang, G. F. Xu, M. Pelizaeus, S. Jin, X. Sun, R. Poling, V. V. Bytev, Julian Schulze, Joong-Won Park, X. Y. Song, Fenfen An, T. C. Zhao, Qi-Wen Lü, X. T. Liao, D. Alberto, R. Baldini Ferroli, and X. N. Li
Subjects: Nuclear physics, Physics, Particle physics, Meson, Isospin, Electron–positron annihilation, Mass spectrum, Pi, General Physics and Astronomy, High Energy Physics::Experiment
Abstract: The decays J/psi -> gamma pi(+)pi(-)pi(0) and J/psi ->gamma pi(0)pi(0)pi(0) are analyzed using a sample of 225 X 10(6) J/psi events collected with the BESIII detector. The decay of eta(1405) -> f(0)(980)pi(0) with a large isospin violation is observed for the first time. The width of the f(0)(980) observed in the dipion mass spectra is anomalously narrower than the world average. Decay rates for three-pion decays of the eta' are also measured precisely.
Published: 2012

230. Evidence for the direct two-photon transition from ψ(3686) to J/ψ

Author: M, Ablikim, M N, Achasov, D J, Ambrose, F F, An, Q, An, Z H, An, J Z, Bai, R B, Ferroli, Y, Ban, J, Becker, N, Berger, M B, Bertani, J M, Bian, E, Boger, O, Bondarenko, I, Boyko, R A, Briere, V, Bytev, X, Cai, A C, Calcaterra, G F, Cao, J F, Chang, G, Chelkov, G, Chen, H S, Chen, J C, Chen, M L, Chen, S J, Chen, Y, Chen, Y B, Chen, H P, Cheng, Y P, Chu, D, Cronin-Hennessy, H L, Dai, J P, Dai, D, Dedovich, Z Y, Deng, A, Denig, I, Denysenko, M, Destefanis, W M, Ding, Y, Ding, L Y, Dong, M Y, Dong, S X, Du, J, Fang, S S, Fang, L, Fava, F, Feldbauer, C Q, Feng, C D, Fu, J L, Fu, Y, Gao, C, Geng, K, Goetzen, W X, Gong, W, Gradl, M, Greco, M H, Gu, Y T, Gu, Y H, Guan, A Q, Guo, L B, Guo, Y P, Guo, Y L, Han, X Q, Hao, F A, Harris, K L, He, M, He, Z Y, He, T, Held, Y K, Heng, Z L, Hou, H M, Hu, J F, Hu, T, Hu, B, Huang, G M, Huang, J S, Huang, X T, Huang, Y P, Huang, T, Hussain, C S, Ji, Q, Ji, X B, Ji, X L, Ji, L K, Jia, L L, Jiang, X S, Jiang, J B, Jiao, Z, Jiao, D P, Jin, S, Jin, F F, Jing, N, Kalantar-Nayestanaki, M, Kavatsyuk, W, Kuehn, W, Lai, J S, Lange, J K C, Leung, C H, Li, Cheng, Li, Cui, Li, D M, Li, F, Li, G, Li, H B, Li, J C, Li, K, Li, Lei, Li, N B, Li, Q J, Li, S L, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, X R, Li, Z B, Li, H, Liang, Y F, Liang, Y T, Liang, G R, Liao, X T, Liao, B J, Liu, C L, Liu, C X, Liu, C Y, Liu, F H, Liu, Fang, Liu, Feng, Liu, H, Liu, H B, Liu, H H, Liu, H M, Liu, H W, Liu, J P, Liu, Kun, Liu, Kai, Liu, K Y, Liu, P L, Liu, S B, Liu, X, Liu, X H, Liu, Y B, Liu, Y, Liu, Z A, Liu, Zhiqiang, Liu, Zhiqing, Liu, H, Loehner, G R, Lu, H J, Lu, J G, Lu, Q W, Lu, X R, Lu, Y P, Lu, C L, Luo, M X, Luo, T, Luo, X L, Luo, M, Lv, C L, Ma, F C, Ma, H L, Ma, Q M, Ma, S, Ma, T, Ma, X Y, Ma, Y, Ma, F E, Maas, M, Maggiora, Q A, Malik, H, Mao, Y J, Mao, Z P, Mao, J G, Messchendorp, J, Min, T J, Min, R E, Mitchell, X H, Mo, C, Morales Morales, C, Motzko, N Yu, Muchnoi, Y, Nefedov, C, Nicholson, I B, Nikolaev, Z, Ning, S L, Olsen, Q, Ouyang, S P, Pacetti, J W, Park, M, Pelizaeus, K, Peters, J L, Ping, R G, Ping, R, Poling, E, Prencipe, C S J, Pun, M, Qi, S, Qian, C F, Qiao, X S, Qin, Y, Qin, Z H, Qin, J F, Qiu, K H, Rashid, G, Rong, X D, Ruan, A, Sarantsev, J, Schulze, M, Shao, C P, Shen, X Y, Shen, H Y, Sheng, M R, Shepherd, X Y, Song, S, Spataro, B, Spruck, D H, Sun, G X, Sun, J F, Sun, S S, Sun, X D, Sun, Y J, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, X, Tang, E H, Thorndike, H L, Tian, D, Toth, M U, Ulrich, G S, Varner, B, Wang, B Q, Wang, K, Wang, L L, Wang, L S, Wang, M, Wang, P, Wang, P L, Wang, Q, Wang, Q J, Wang, S G, Wang, X F, Wang, X L, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z Y, Wang, D H, Wei, P, Weidenkaff, Q G, Wen, S P, Wen, M W, Werner, U, Wiedner, L H, Wu, N, Wu, S X, Wu, W, Wu, Z, Wu, L G, Xia, Z J, Xiao, Y G, Xie, Q L, Xiu, G F, Xu, G M, Xu, H, Xu, Q J, Xu, X P, Xu, Y, Xu, Z R, Xu, F, Xue, Z, Xue, L, Yan, W B, Yan, Y H, Yan, H X, Yang, T, Yang, Y, Yang, Y X, Yang, H, Ye, M, Ye, M H, Ye, B X, Yu, C X, Yu, J S, Yu, S P, Yu, C Z, Yuan, W L, Yuan, Y, Yuan, A A, Zafar, A Z, Zallo, Y, Zeng, B X, Zhang, B Y, Zhang, C C, Zhang, D H, Zhang, H H, Zhang, H Y, Zhang, J, Zhang, J G, Zhang, J Q, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, L, Zhang, S H, Zhang, T R, Zhang, X J, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Y S, Zhang, Z P, Zhang, Z Y, Zhang, G, Zhao, H S, Zhao, J W, Zhao, K X, Zhao, Lei, Zhao, Ling, Zhao, M G, Zhao, Q, Zhao, S J, Zhao, T C, Zhao, X H, Zhao, Y B, Zhao, Z G, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, Y H, Zheng, Z P, Zheng, B, Zhong, J, Zhong, L, Zhou, X K, Zhou, X R, Zhou, C, Zhu, K, Zhu, K J, Zhu, S H, Zhu, X L, Zhu, X W, Zhu, Y M, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, B S, Zou, J H, Zou, and J X, Zuo
Subjects: Physics, Particle physics, Branching fraction, Electron–positron annihilation, General Physics and Astronomy
Abstract: The two-photon transition ψ(3686)→γγJ/ψ is studied in a sample of 1.06×10(8) ψ(3686) decays collected by the BESIII detector. The branching fraction is measured to be (3.1±0.6(stat)(-1.0)(+0.8)(syst))×10(-4) using J/ψ→e(+)e(-) and J/ψ→μ(+)μ(-) decays, and its upper limit is estimated to be 4.5×10(-4) at the 90% confidence level. This work represents the first measurement of a two-photon transition among charmonium states. The orientation of the ψ(3686) decay plane and the J/ψ polarization in this decay are also studied. In addition, the product branching fractions of sequential E1 transitions ψ(3686)→γχ(cJ) and χ(cJ)→γJ/ψ(J=0,1,2) are reported.
Published: 2012

231. Spin-Parity Analysis ofpp¯Mass Threshold Structure inJ/ψandψ(3686)Radiative Decays

Author: N. Wu, Krisztian Peters, M. Bertani, Z. P. Zheng, K. Goetzen, W. Kuehn, Shou-hua Zhu, B. Q. Wang, C. P. Shen, Feng Liu, Chang Liu, O. Bondarenko, Jingwei Zhao, T. R. Zhang, Yin Xu, L. H. Wu, J. K. C. Leung, L. Zhang, B. S. Zou, H. M. Hu, H. L. Ma, D. M. Li, F. Li, Shan Wang, H. Mao, Tao Luo, Nicolas Berger, Z. G. Wang, H. Y. Zhang, Y. F. Liang, D. P. Jin, Y. Q. Wang, X. T. Huang, M. Ablikim, A. A. Zafar, G. Rong, J. W. Zhang, D. J. Ambrose, P. L. Wang, M. H. Gu, A. Q. Guo, Y. H. Guan, G. F. Xu, J. B. Jiao, J. X. Zuo, G. F. Chen, F. C. Ma, Yao Wang, S. Jin, Y. J. Mao, H. Y. Sheng, Brent J. Liu, M. Qi, J. Z. Bai, X. L. Luo, J. Zhong, X. Q. Hao, H. L. Tian, J. Y. Zhang, G. S. Varner, Y. H. Zheng, Xiaobo Zhu, Cong-Feng Qiao, B. X. Yu, Zujian Wang, Y. S. Zhang, C. X. Yu, X. Y. Song, S. Ma, Hang Liu, B. Huang, H. H. Liu, B. Spruck, B. Zheng, R. G. Ping, Z. Ning, W. D. Li, M. Maggiora, Ling Zhao, Y. T. Liang, Q. A. Malik, X. H. Mo, D. Toth, L. S. Wang, X. H. Zhao, X. K. Zhou, Y. Zhang, H. S. Chen, Q. P. Ji, X. Q. Li, M. Greco, Meng Wang, N. Yu. Muchnoi, Y. K. Heng, Q. An, Y. Nefedov, Z. A. Liu, M. H. Ye, Q. M. Ma, Zhihao Xu, Chuan Liu, Heng-Yun Ye, Yuehong Xie, J. F. Sun, S. H. Zhang, Lei Zhao, Z. Y. He, Z. L. Hou, Yang Yang, Z. B. Li, H. X. Yang, H.S. Xu, A. Zallo, X. Y. Shen, J. M. Bian, Zhenyu Zhang, W. Lai, Y. P. Chu, Y. H. Zhang, Y. Ban, J. S. Huang, Yang Gao, Chun S. J. Pun, X. B. Ji, Wei Wu, A. Zhemchugov, J. Zhang, Shujun Zhao, Yong Liu, M. Kavatsyuk, J. Q. Zhang, C. X. Liu, H. L. Dai, Igor Boyko, Y. Ding, J. C. Li, Shisong Fang, Q. G. Wen, Cui Li, S. P. Wen, Y. Zeng, Zhe Sun, Y. Yuan, Y. S. Zhu, G. M. Xu, C. Z. Yuan, X. S. Qin, X. F. Wang, Huihui Liu, X. R. Zhou, G. R. Lu, J. P. Liu, J. F. Qiu, J. L. Fu, Zhiqing Liu, Cheng Li, Zhiyong Zhang, J. G. Messchendorp, Z. Y. Wang, Z. A. Zhu, X. L. Ji, Xiangdong Ruan, G. X. Sun, Li Yan, S. P. Yu, J. F. Chang, Y. B. Chen, J. Zhuang, B. X. Zhang, G. A. Chelkov, Z. Jiao, Fu-Hu Liu, D. H. Zhang, J. C. Chen, Y. X. Yang, E. H. Thorndike, W. G. Li, Xiaofeng Zhu, J. Z. Zhang, X. Liu, L. Y. Dong, Talib Hussain, Y. B. Zhao, S. B. Liu, S. L. Li, D. H. Sun, Xing Lu, Y. H. Yan, H. J. Lu, J. G. Lu, S. Spataro, X. P. Xu, G. R. Liao, H. H. Zhang, Nasser Kalantar-Nayestanaki, HongSheng Zhao, M. X. Luo, X. H. Liu, Q. J. Wang, R. Poling, C. Zhu, Ke Wang, D. Cronin-Hennessy, F. F. Jing, X. Cai, X. R. Li, J. Min, Z. J. Xiao, H. M. Liu, G. Li, Yulei Han, Q. Liu, Qun-Yao Wang, Jianping Zheng, H. B. Liu, J. F. Hu, M. Pelizaeus, C. J. Tang, X. Sun, M. R. Shepherd, Y. P. Guo, J. P. Dai, G. F. Cao, D. V. Dedovich, C. L. Ma, W. L. Yuan, Q. Ouyang, Julian Schulze, K. L. He, Sai-Juan Chen, T. Hu, Q. Zhao, M. Lv, K. Y. Liu, Joong-Won Park, M. G. Zhao, L. L. Jiang, Y. Z. Sun, C. Geng, S. X. Du, Y. B. Liu, C. D. Fu, Y. P. Lu, B. Wang, V. V. Bytev, Z. Xue, Fenfen An, N. B. Li, M. Destefanis, C. Q. Feng, Guangming Huang, F. A. Harris, Z. Wu, Qi-Wen Lü, S. Qian, Jialun Ping, I. B. Nikolaev, D. Alberto, L. L. Wang, T. C. Zhao, X. Y. Zhang, Q. L. Xiu, Z. Y. Deng, K. H. Rashid, M. Shao, Y. T. Gu, Y. J. Sun, E. Boger, Gang Zhao, Xingguo Li, Q. J. Li, X. T. Liao, Zhiqiang Liu, Miao He, L. P. Zhou, Z. P. Mao, Z. H. An, R. Baldini Ferroli, H. P. Cheng, Z. G. Zhao, J. Fang, K. J. Zhu, Xuantong Zhang, Xiujuan Tang, A. Sarantsev, D. H. Wei, J. S. Lange, Y. F. Wang, A. Calcaterra, C. S. Ji, Q. J. Xu, H. Liang, T. Yang, X. L. Wang, T. J. Min, Z. J. Sun, H. Loehner, X. N. Li, H. B. Li, C. L. Luo, Yuanbo Chen, K. Li, C. C. Zhang, M. L. Chen, B. Zhong, L. B. Guo, X. Y. Ma, Lei Li, W. L. Ding Ding, W. X. Gong, Ulrich Wiedner, Fang Liu, T. Ma, Yanping Huang, I. Denysenko, B. Y. Zhang, C. H. Li, M. Y. Dong, J. H. Zou, S. L. Olsen, R. A. Briere, S. S. Sun, X. S. Jiang, L. K. Jia, Jürgen Becker, R. E. Mitchell, W. B. Yan, M. N. Achasov, and S. Pacetti
Subjects: Physics, Branching fraction, Electron–positron annihilation, Partial wave analysis, Analytical chemistry, Radiative transfer, General Physics and Astronomy, Parity (physics), Atomic physics, Quantum number, Production rate, Gamma gamma
Abstract: A partial wave analysis of the p (p) over bar mass-threshold enhancement in the reaction J/psi -> gamma p (p) over bar is used to determine its J(PC) quantum numbers to be 0(-+), its peak mass to be below threshold at M 1832(-5)(+19)(stat)(-17)(+18)(syst) +/- 19(model) MeV/c(2), and its total width to be Gamma gamma X(p)]BR[X(p (p) over bar) -> p (p) over bar] = [9:0(-1.1)(+0.4)(stat)(-5.0)(+1:5)(syst) +/- 2: 3(model)] x 10(-5). A similar analysis performed on psi(3686) -> gamma p (p) over bar decays shows, for the first time, the presence of a corresponding enhancement with a production rate relative to that for J/psi decays of R = [5.08(-0.45)(+0: 71)(stat)(-058)(+0: 67) (syst) +/- 0: 12(model)%.
Published: 2012

232. Observation of D1 (2420)+ and D2∗(2460)+

Author: F. Wappler, S. Henderson, C. D. Jones, Y. Kwon, D. S. Crowcroft, J. K. Nelson, B. Geiser, D. Z. Besson, R. Mountain, M. Goldberg, Jungil Lee, W. S. Brower, D. Cinabro, K. K. Gan, Anders Ryd, M. Athanas, G. Crawford, D. H. Miller, S. Patton, P. Pomianowski, P. Zadorozhny, F. Muheim, M. Lohner, T. Liu, J. Masui, B. Spaan, Vivek Jain, Ilya Kravchenko, H. Kagan, S. Salman, C. Bebek, Kenneth Bloom, P. Gaidarev, Michael Wood, K. Lingel, X. Fu, J. W. Hinson, N. Katayama, J. Urheim, D. G. Cassel, Ian Shipsey, D. He, A. P. Freyberger, G. Eigen, R. Davis, Ha Lam, B. C. Barish, Daniel Johnson, S. Nakanishi, E. H. Thorndike, B. Ong, A. H. Mahmood, T. E. Browder, Z. Ling, George D Gollin, R. J. Morrison, S. Playfer, P. S. Drell, Mats A Selen, D. Coppage, D. L. Kreinick, D. J. Dumas, Alain Bellerive, T. Miao, S. E. Csorna, A. J. Sadoff, N. Copty, Jorge Luis Rodriguez, M. Saulnier, S. Kotov, J. P. Alexander, Sheldon Stone, Paul Avery, Karl Berkelman, K. Kinoshita, B. I. Eisenstein, K. Cho, M. L. Kelly, P. Skubic, S. Roberts, P. M. Patel, B. Nemati, J. Fast, F. Butler, N. B. Mistry, L. Gibbons, M. Battle, J. J. Thaler, J. Gronberg, S. W. Gray, N. Horwitz, B. Gittelman, M. Ogg, D. B. MacFarlane, A. J. Weinstein, D. Riley, G. C. Moneti, Christopher G. White, M. S. Alam, M. Chadha, M. Modesitt, Maurice Garcia-Sciveres, R. Ammar, R. Malchow, I. J. Kim, J. Mevissen, H. N. Nelson, C. M. Daubenmier, Ryszard Stroynowski, J. Bartelt, J. Kandaswamy, T. K. Nelson, H. Severini, S. Chan, J. Ernst, G. Zhu, X. Xing, M. Sung, M. Momayezi, H. Tajima, M. Sapper, C. O'Grady, E. I. Shibata, John Yelton, M. Lambrecht, P. Rankin, E. R.F. Hyatt, M. Lattery, J. G. Smith, Alice Bean, D. Peterson, M. Gao, C. R. Sun, W. T. Ford, H. P. Paar, R. Fulton, N. Kwak, R. Kutschke, M. Bishai, D. Fujino, J. J. O'Neill, Yuichi Kubota, M. M. Zoeller, R. D. Kass, R. Balest, Chunjie Wang, K. Honscheid, W. R. Ross, Richard Wilson, D. Gibaut, S. Menary, Dave Britton, R. L. McIlwain, E. Gerndt, I. Volobouev, Shengfeng Yang, Yurii V. Mukhin, K. W. Edwards, V. Shelkov, S. Schrenk, S. Sanghera, Z. Egyed, T. Skwarnicki, P. C. Kim, E. Nordberg, Jeffrey Richman, D. F. Cowen, D. Sperka, G. S. Ludwig, Ruifang Wang, N. Hancock, T. Bergfeld, C. Qiao, Pu Wang, Marina Artuso, H. Yamamoto, M.A. Palmer, J. S. Miller, R. Ehrlich, S. L. Jones, J. Dominick, V. Savinov, Yoram Rozen, F. Würthwein, Philip Baringer, D. Payne, H. A. Cho, D. L. Hartill, R. Poling, C. R. Ng, D. M. Coffman, Michael S. Witherell, B. K. Heltsley, G. Wei, G. Masek, and Juliet Ritchie Patterson
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Electron–positron annihilation, Isospin, State (functional analysis)
Abstract: Using the CLEO II detector at CESR, we have observed two charmed states, where the higher mass state decays to D0π+ and to D ∗0 π + , while the lower mass state decays to D ∗0 π + , but not to D0π+. The masses and widths were measured to be 2425±2±2 MeV/c2 and 26−7−4+8+4 MeV/c2 for the lower mass state, and 2463±3±3 MeV/c2 and 27−8−5+11+5 MeV/c2 for the higher mass state. Properties of these states, including their decay angular distributions and spin-parity assignments have been studied. The results of this analysis support the identification of these states as the charged L = 1 D 1 (2420) + and D 2 ∗ (2460) + , respectively. The isospin mass splittings between these states and their neutral partners have also been measured. This is the first full reconstruction of any decay mode of the D1 (2420)+ and the first observation of the decay of D 2 ∗ (2460) + to D ∗0 π + .
Published: 1994

233. Measurement of the cross section for γγ→pp¯

Author: J. Whitmore, K. Lingel, C. Bebek, Jungil Lee, M. Sivertz, T. E. Browder, Robert Wilson, David Sperka, H. Tajima, R. Ehrlich, J. S. Miller, S. L. Jones, H. Worden, M. Thulasidas, H. A. Cho, M. Kelly, D. G. Cassel, J. Dominick, Sheldon Stone, J. Mevissen, V. Shelkov, K. Sparks, S. J. Patton, Paul Avery, D. Cinabro, R. Kennett, Yoram Rozen, J. Kandaswamy, N. Horwitz, J. Masui, M. Chadha, Philip Baringer, S. Ball, V. Savinov, Cong Wang, Shengfeng Yang, J. A. Ernst, B. Gittelman, C. R. Ng, Shawn W. Henderson, Michael S. Witherell, J. Gronberg, H. P. Paar, R. Fulton, D. Peterson, X. Fu, Daniela Bortoletto, M. S. Alam, D. F. Cowen, M.K. Sung, I. J. Kim, D. H. Miller, J. Urheim, N. Katayama, Marina Artuso, R. Poling, D. S. Akerib, E. H. Thorndike, N. Hancock, Y. Skovpen, R. Davis, John Yelton, John E. Bartelt, G.R. Kalbfleisch, Robert K. Kutschke, G. Eigen, D. Z. Besson, P. Zadorozhny, R. L. Malchow, Christopher G. White, D. Coppage, Karl Berkelman, B. Ong, M. Daoudi, J. P. Alexander, M. Garcia-Sciveres, F. Muheim, D. L. Hartill, C. R. Sun, W. T. Ford, S. Sanghera, Pu Wang, J. L. Rodriguez, M. Sapper, S. Roberts, R. D. Kass, Anders Ryd, M. Athanas, R. Stephens, E. Nordberg, S. E. Csorna, Darin Acosta, Daniel Schmidt, G. S. Ludwig, D. R. Johnson, R. Balest, Frank Würthwein, Vipul Jain, K. Cho, G. Vasseur, J. Fast, B. Geiser, N. B. Mistry, F. Butler, B. Nemati, S. Schrenk, K. Kinoshita, R. S. Galik, N. Copty, Ryszard Stroynowski, W. R. Ross, D. Fujino, K. Honscheid, D. He, N. Kwak, G. Masek, Juliet Ritchie Patterson, P. Skubic, S. Nakanishi, T. Liu, M. Modesitt, E. I. Shibata, C. O'Grady, P. Rankin, Glen D. Crawford, Alice Bean, M. Procario, R. L. McIlwain, H. Kagan, M. Battle, H. N. Nelson, A. P. Freyberger, F. Shen, Horst Severini, A. J.R. Weinstein, S. Playfer, Ha Lam, J. D. Richman, M. Ogg, D. Riley, M. Lohner, J. J. O'Neill, R. J. Morrison, G. Zhu, Hubert Kroha, Mats A Selen, T. Miao, A. J. Sadoff, D. M. Coffman, M. Lattery, B. C. Barish, B. K. Heltsley, J. Snow, Paul Sheldon, Yuichi Kubota, H. Yamamoto, R. Ammar, P. L. Wang, T. K. Nelson, R. Wang, P. S. Drell, S. Chan, M. Saulnier, F. Morrow, Z. Egyed, Igor Volobouev, M. M. Zoeller, P. Wilson, K. K. Gan, T. Skwarnicki, P. C. Kim, S. Menary, M. Goldberg, G. C. Moneti, S.F. Schaffner, Yurii V. Mukhin, S. W. Gray, D. Perticone, M. Lambrecht, D. N. Brown, I. P. J. Shipsey, S. Salman, Janice Nelson, C. D. Jones, Michael Wood, J. G. Smith, C. M. Daubenmier, and D. L. Kreinick
Subjects: Nuclear physics, Physics, Cross section (physics), Particle physics
Published: 1994

234. Measurement of the ratios of form factors in the decay Ds+ → φe+ve

Author: D. M. Coffman, B. K. Heltsley, B. Geiser, K. Cho, N. B. Mistry, D. He, R. J. Morrison, Mats A Selen, A. J. Sadoff, T. E. Browder, M. Lohner, V. Savinov, Yoram Rozen, F. Würthwein, J. Masui, D. Cinabro, D. Fujino, S. Sanghera, R. Davis, George D Gollin, J. J. O'Neill, Alice Bean, B. Spaan, D. Gibaut, T. Skwarnicki, N. Hancock, J. K. Nelson, M. Momayezi, Yurii V. Mukhin, R. Kutschke, S. Patton, Philip Baringer, Xiangjun Xing, P. C. Kim, D. S. Crowcroft, Sheldon Stone, Paul Avery, P. Skubic, M. Sapper, R. Mountain, M. Sung, Anders Ryd, P. S. Drell, J. Mevissen, Vivek Jain, M. Athanas, Pu Wang, J. Kandaswamy, Jorge Luis Rodriguez, Shawn W. Henderson, N. Copty, Y. Kwon, T. K. Nelson, Daniel Johnson, M. Saulnier, G. Masek, Juliet Ritchie Patterson, G. C. Moneti, C. Qiao, R. Ehrlich, G. Crawford, Shengfeng Yang, M. L. Kelly, Z. Ling, Marina Artuso, D. Z. Besson, M. M. Zoeller, J. Urheim, D. H. Miller, S. W. Gray, Jon J Thaler, E. I. Shibata, I. P.J. Shipsey, D. Peterson, M. Modesitt, C. R. Sun, W. T. Ford, R. D. Kass, D. B. MacFarlane, S. L. Jones, R. Balest, P. Gaidarev, B. Nemati, Maurice Garcia-Sciveres, G. Zhu, K. K. Gan, S. Kotov, Y. Skovpen, A. J. Weinstein, X. Fu, D. L. Kreinick, B. Gittelman, M. S. Alam, D. J. Dumas, J. Dominick, F. Butler, D. F. Cowen, S. Nakanishi, E. H. Thorndike, R. Malchow, H. N. Nelson, T. Liu, H. Hagan, J. Ernst, I. J. Kim, J. G. Smith, W. R. Ross, F. R. Wappler, E. Gerndt, K. W. Edwards, Karl Berkelman, D. G. Cassel, Jungil Lee, John Yelton, M. Lambrecht, D. Coppage, J. S. Miller, C. Bebek, L. Gibbons, S. Roberts, C. D. Jones, E. R.F. Hyatt, Kenneth Bloom, M. Lattery, T. Miao, M. Battle, I. Volobouev, W. S. Brower, A. H. Mahmood, N. Katayama, J. Gronberg, P. Pomianowski, D. Payne, J. P. Alexander, H. A. Cho, Richard Wilson, S. E. Csorna, A. P. Freyberger, N. Horwitz, Z. Egyed, M. Chadha, N. Kwak, R. Ammar, K. Honscheid, M. Bishai, Ilya Kravchenko, S. Salman, G. Eigen, Michael Wood, M. Gao, H. P. Paar, R. Fulton, H. Tajima, M. Ogg, H. Severini, B. I. Eisenstein, M.A. Palmer, M. Goldberg, S. Chan, D. L. Hartill, D. Sperka, R. Poling, S. Menary, Dave Britton, C. O'Grady, C. M. Daubenmier, C. R. Ng, Ryszard Stroynowski, R. L. McIlwain, E. Nordberg, Jeffrey Richman, V. Shelkov, S. Schrenk, K. Kinoshita, Michael S. Witherell, G. S. Ludwig, P. Zadorozhny, F. Muheim, K. Lingel, P. Rankin, Ruifang Wang, Ha Lam, S. Playfer, T. Bergfeld, D. Riley, Chunjie Wang, B. C. Barish, G. Wei, H. Yamamoto, J. Bartelt, B. Ong, Yuichi Kubota, J. Fast, Christopher G. White, Alain Bellerive, and P. M. Patel
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Detector, Form factor (quantum field theory), Atomic physics, Pseudovector, Sample (graphics)
Abstract: The dynamics of the decay D s + → φe + v e are studied using a sample of 474 events recorded by the CLEO II detector. A three dimensional fit to the decay angles and q 2 is performed to extract the ratios of form factors R 2 = A 2 (0)/ A 1 (0) and R v = V (0 )/ A 1 (0), where A 1 (0) and A 2 (0) are the two axial vector form factors and V (0) is the vector form factor evaluated at q 2 =0. By assuming the single pole parameterization for the form factors, we obtain: R 2 =1.4±0.5±0.3 and R v =0.9±0.6±0.3.
Published: 1994

235. Measurement of two-photon production of theχc2

Author: T. Liu, M. Modesitt, A. P. Freyberger, H. N. Nelson, J. Snow, S. Roberts, N. Katayama, M. Garcia-Sciveres, Vipul Jain, D. S. Akerib, J. G. Smith, K. Lingel, M. Sivertz, G. Eigen, N. Kwak, Ryszard Stroynowski, D. Fujino, D. L. Kreinick, C. Bebek, H. Worden, D. G. Cassel, T. K. Nelson, Robert Wilson, K. Sparks, S. J. Patton, D. Perticone, P. Rankin, T. E. Browder, R. L. Malchow, D. Z. Besson, R. Poling, Igor Volobouev, M. M. Zoeller, J. Urheim, Marina Artuso, J. Dominick, M. Lambrecht, D. N. Brown, Christopher G. White, R. L. McIlwain, P. Zadorozhny, M. Daoudi, J. L. Rodriguez, J. Gronberg, I. P. J. Shipsey, V. Savinov, H. P. Paar, R. Fulton, B. Nemati, S. Menary, C. R. Sun, F. Shen, W. T. Ford, D. H. Miller, R. D. Kass, Anders Ryd, M. Athanas, S. Salman, Janice Nelson, C. D. Jones, Michael Wood, David Sperka, Frank Würthwein, K. Cho, P. S. Drell, M. Battle, R. Balest, A. J.R. Weinstein, N. B. Mistry, M. Daubenmeir, Shengfeng Yang, E. Nordberg, Ha Lam, J. D. Richman, M. S. Alam, W. R. Ross, S. Schrenk, G. S. Ludwig, M. Saulnier, F. Morrow, P. Wilson, D. F. Cowen, H. Kagan, R. Davis, D. He, M. Lattery, E. I. Shibata, M. Kelly, J. Mevissen, John E. Bartelt, G.R. Kalbfleisch, B. C. Barish, H. Yamamoto, E. H. Thorndike, D. M. Coffman, F. Muheim, D. R. Johnson, D. Cinabro, R. Kennett, B. K. Heltsley, J. Masui, J. Kandaswamy, J. A. Ernst, D. Peterson, D. Coppage, J. P. Alexander, B. Gittelman, T. Miao, R. Stephens, S. E. Csorna, D. Riley, S. Playfer, R. Wang, F. Butler, K. Kinoshita, I. J. Kim, N. Hancock, Y. Skovpen, Sheldon Stone, Paul Avery, R. Ammar, K. K. Gan, R. S. Galik, T. Skwarnicki, S. W. Gray, M. Sapper, S. Chan, R. J. Morrison, B. Geiser, Paul Sheldon, P. C. Kim, Yuichi Kubota, S. Sanghera, Pu Wang, M. Lohner, Darin Acosta, J. Whitmore, Jungil Lee, J. J. O'Neill, Mats A Selen, A. J. Sadoff, M. Goldberg, G. C. Moneti, N. Horwitz, M. Chadha, S.F. Schaffner, V. Shelkov, Cong Wang, John Yelton, M. Ogg, G. Zhu, Robert K. Kutschke, D. L. Hartill, Daniel Schmidt, J. Fast, Karl Berkelman, N. Copty, Glen D. Crawford, Z. Egyed, Shawn W. Henderson, X. Fu, B. Ong, G. Vasseur, Yurii V. Mukhin, P. Skubic, S. Nakanishi, G. Masek, Juliet Ritchie Patterson, M. Procario, K. Honscheid, P. L. Wang, Horst Severini, Hubert Kroha, H. A. Cho, Daniela Bortoletto, C. R. Ng, Michael S. Witherell, M.K. Sung, Yoram Rozen, Philip Baringer, S. Ball, H. Tajima, R. Ehrlich, S. L. Jones, J. S. Miller, M. Thulasidas, Alice Bean, and C. O'Grady
Subjects: Physics, Statistics::Theory, Particle physics, Particle decay, Muon, Statistics::Applications, Meson, Hadron, Perturbative QCD, High Energy Physics::Experiment, Production (computer science), Elementary particle, Quarkonium
Abstract: The CLEO II detector is used to search for the production of ${\mathrm{\ensuremath{\chi}}}_{\mathit{c}2}$ states in two-photon interactions. We use the signature ${\mathrm{\ensuremath{\chi}}}_{\mathit{c}2}$\ensuremath{\rightarrow}\ensuremath{\gamma}J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\gamma}${\mathit{l}}^{+}$${\mathit{l}}^{\mathrm{\ensuremath{-}}}$ with l=e,\ensuremath{\mu}. Using 1.49 ${\mathrm{fb}}^{\mathrm{\ensuremath{-}}1}$ of data taken with beam energies near 5.29 GeV, the two-photon width of the ${\mathrm{\ensuremath{\chi}}}_{\mathit{c}2}$ is determined to be \ensuremath{\Gamma}(${\mathrm{\ensuremath{\chi}}}_{\mathit{c}2}$\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\gamma})=1.08\ifmmode\pm\else\textpm\fi{}0.30(stat)\ifmmode\pm\else\textpm\fi{}0.26(syst) keV, in agreement with predictions from perturbative QCD.
Published: 1994

236. Observation of InclusiveBDecays to the Charmed BaryonsΣc++andΣc0

Author: D. G. Cassel, Ron Poling, Daniel Schmidt, Kenneth Bloom, P.M. Patel, J. Mevissen, J. Kandaswamy, N. Katayama, D. S. Akerib, T. K. Nelson, G. Eigen, D. Peterson, G. Crawford, B. I. Eisenstein, D. B. MacFarlane, A. J. Weinstein, H. N. Nelson, D. L. Kreinick, P. Baringer, M. L. Kelly, S. W. Gray, Ha Lam, H. Kagan, S. Roberts, J. Urheim, H. P. Paar, R. Fulton, N. Kwak, J. K. Nelson, T. Liu, C. Bebek, Richard Wilson, D. He, E. Nordberg, Jeffrey Richman, G. S. Ludwig, M. Battle, W. R. Ross, P. S. Drell, G. Vasseur, C. Qiao, Jorge Luis Rodriguez, R. Mountain, B. Nemati, F. Morrow, A. P. Freyberger, George R. Kalbfleisch, M. Procario, M. Saulnier, T. E. Browder, R. Davis, I. Volobouev, H. Yamamoto, Shengfeng Yang, B. C. Barish, S. Menary, Dave Britton, R. L. McIlwain, R. Ammar, J. Masui, V. Shelkov, S. Schrenk, D. F. Cowen, Maurice Garcia-Sciveres, George D Gollin, S. Salman, Karl Berkelman, R. J. Morrison, Mats A Selen, A. J. Sadoff, Michael Wood, R. Stephens, Vivek Jain, S. E. Csorna, Alice Bean, Y. Kwon, G. C. Moneti, M. S. Alam, R. Kennett, B. Gittelman, J. Ernst, H. Severini, S. Chan, P. Skubic, J. Snow, J. S. Miller, D. Riley, Anders Ryd, M. Athanas, D. Z. Besson, D. M. Coffman, M. Modesitt, M. Daoudi, K. Cho, S. Sanghera, B. K. Heltsley, M. Thulasidas, I. J. Kim, E. R.F. Hyatt, M. Lattery, R. Kutschke, C. M. Daubenmier, N. B. Mistry, Ryszard Stroynowski, N. Hancock, M.A. Palmer, F. Butler, J. Bartelt, I. P.J. Shipsey, C. D. Jones, K. K. Gan, Sheldon Stone, P. Zadorozhny, F. Muheim, K. Kinoshita, C. O'Grady, Paul Avery, E. I. Shibata, J. G. Smith, P. Rankin, Y. Skovpen, R. Malchow, John Yelton, M. Lambrecht, J. J. Thaler, M. Goldberg, R. Ehrlich, D. N. Brown, Marina Artuso, Chunjie Wang, D. Cinabro, S. Playfer, Yuichi Kubota, S. L. Jones, J. Gronberg, N. Horwitz, M. Chadha, J. Dominick, D. Perticone, V. Savinov, S. Patton, M. Sapper, C. R. Sun, Yoram Rozen, F. Würthwein, W. T. Ford, R. D. Kass, G. Zhu, R. Balest, S. Ball, D. Acosta, M. Sung, H. Tajima, Daniel Johnson, T. Skwarnicki, D. Fujino, P. C. Kim, J. J. O'Neill, S. Henderson, D. H. Miller, X. Fu, B. Geiser, Pu Wang, Jungil Lee, Yurii V. Mukhin, M. M. Zoeller, S. Nakanishi, E. H. Thorndike, D. Coppage, J. P. Alexander, M. Lohner, T. Miao, M. Ogg, R. S. Galik, K. W. Edwards, Z. Egyed, D. Sperka, Ruifang Wang, T. Bergfeld, P. L. Wang, B. Ong, J. Fast, Christopher G. White, D. Payne, H. A. Cho, D. L. Hartill, C. R. Ng, Michael S. Witherell, N. Copty, K. Honscheid, G. Wei, G. Masek, Juliet Ritchie Patterson, and K. Lingel
Subjects: Physics, Charmed baryons, Stereochemistry, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, General Physics and Astronomy, Cornell Electron Storage Ring, Atomic physics
Abstract: Using data collected in the region of the [Upsilon](4[ital S]) resonance with the CLEO II detector operating at the Cornell Electron Storage Ring, we report on evidence for the production of [Sigma][sub [ital c]][sup ++] and [Sigma][sub [ital e]][sup 0] baryons in [ital B] decays, with [Sigma][sub [ital c]][r arrow][Lambda][sub [ital c]][sup +][pi]. This observation is based on 77[plus minus]19[Sigma][sub [ital c]][sup ++] and 76[plus minus]21[Sigma][sub [ital c]][sup 0] candidates from [ital B] decays. We find the product branching fractions [ital scrB]([ital [bar B]][r arrow][Sigma][sub [ital c]][ital X])[ital scrB]([Lambda][sub [ital c]][sup +][r arrow][ital pK][sup [minus]][pi][sup +]) for [Sigma][sub [ital c]]=[Sigma][sub [ital c]][sup ++], [Sigma][sub [ital c]][sup 0], and [Sigma][sub [ital c]][sup +] to be (2.1[plus minus]0.8[plus minus]0.7)[times]10[sup [minus]4], (2.3[plus minus]0.8[plus minus]0.7)[times]10[sup [minus]4], and less than 4.8[times]10[sup [minus]4] at 90% confidence level, respectively. A study of the [Sigma][sub [ital c]][sup ++] and [Sigma][sub [ital c]][sup 0] momentum spectra indicates that [ital B] decays to two-body final states with [Sigma][sub [ital c]] are suppressed.
Published: 1994

237. Two-photon production of charged pion and kaon pairs

Author: H. P. Paar, R. Fulton, G. Wei, Shawn W. Henderson, N. Horwitz, X. Fu, M. Chadha, D. L. Hartill, Z. Egyed, James E. Fast, E. Nordberg, P. Zadorozhny, R. Stephens, W. R. Ross, G. S. Ludwig, K. Honscheid, M. S. Alam, S. E. Csorna, N. Copty, Shengfeng Yang, F. Butler, J. G. Smith, D. Perticone, K. Lingel, M. Lambrecht, C. M. Daubenmier, D. N. Brown, M. Sivertz, S. Salman, Janice Nelson, C. D. Jones, Michael Wood, T. Bergfeld, T. Liu, M. Modesitt, E.R.F. Hyatt, K. W. Edwards, Glen D. Crawford, K. Kinoshita, Ian Shipsey, D. F. Cowen, J. J. Thaler, N. Hancock, A. P. Freyberger, M.A. Palmer, D. Z. Besson, Y. I. Skovpen, B. Ong, D. Riley, M. Daoudi, Yoram Rozen, M. Garcia-Sciveres, Robert K. Kutschke, V.G. Shelkov, R. L. Malchow, Christopher G. White, D. J. Payne, Vipul Jain, Karl Berkelman, N. Kwak, C. R. Sun, Cong Wang, S. W. Gray, W. T. Ford, Philip Baringer, S. Ball, R. D. Kass, H. Tajima, J. L. Rodriguez, Frank Würthwein, K. Cho, M. Sapper, P. Skubic, G. Masek, Juliet Ritchie Patterson, N. B. Mistry, J. Snow, Ryszard Stroynowski, D. Fujino, P. Rankin, S. Schrenk, Dave Britton, R. L. McIlwain, R. Ehrlich, S. L. Jones, Y. J. Kwon, Yuichi Kubota, S. Sanghera, Pu Wang, Darin Acosta, M. Procario, Jungil Lee, Anders Ryd, M. Athanas, S. Nakanishi, Harris Kagan, John Yelton, S. Playfer, C. P. O'Grady, R. J. Morrison, Mats A Selen, T. Skwarnicki, P. C. Kim, M. Goldberg, G. C. Moneti, E. H. Thorndike, A. J. Sadoff, H. Yamamoto, D. Coppage, T. Miao, D. R. Johnson, J. S. Miller, J. P. Alexander, D. H. Miller, T. K. Nelson, Richard Wilson, R. Wang, Horst Severini, M. Thulasidas, Alice Bean, D. B. MacFarlane, P. L. Wang, D. He, Barry C. Barish, E. I. Shibata, M. Ogg, G. Zhu, H. N. Nelson, G. Vasseur, Igor Volobouev, M. M. Zoeller, R. Davis, Yurii V. Mukhin, George D Gollin, R. S. Galik, Kenneth Bloom, K. K. Gan, N. Katayama, D. S. Akerib, F. Muheim, David Sperka, G. Eigen, D. M. Coffman, P. M. Patel, B. K. Heltsley, R. Mountain, C. Qiao, D. L. Kreinick, C. Bebek, J. Urheim, D. G. Cassel, T. E. Browder, J. Dominick, B. Nemati, V. Savinov, H. A. Cho, M. Battle, A. J.R. Weinstein, C. R. Ng, R. Ammar, Michael S. Witherell, M.K. Sung, S. Chan, P. Gaiderev, S. J. Patton, R. Balest, Marina Artuso, Sheldon Stone, Paul Avery, John E. Bartelt, M. Kelly, S. Menary, J. Mevissen, G.R. Kalbfleisch, J. Kandaswamy, Ha Lam, J. D. Richman, M. Lattery, J. Masui, J. A. Ernst, S. Roberts, D. Peterson, P. S. Drell, R. Poling, M. Saulnier, D. Cinabro, R. Kennett, B. I. Eisenstein, B. Gittelman, I. J. Kim, B. Geiser, M. Lohner, J. J. O'Neill, and J. Gronberg
Subjects: Physics, Quantum chromodynamics, Particle physics, Meson, FOS: Physical sciences, Elementary particle, High Energy Physics - Experiment, Massless particle, Nuclear physics, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Pair production, Pion, High Energy Physics::Experiment, Invariant mass, Cornell Electron Storage Ring
Abstract: A measurement of the cross section for the combined two-photon production of charged pion and kaon pairs is performed using 1.2~$\rm fb^{-1}$ of data collected by the CLEO~II detector at the Cornell Electron Storage Ring. The cross section is measured at invariant masses of the two-photon system between 1.5 and 5.0 GeV/$c^2$, and at scattering angles more than $53^\circ$ away from the $\gamma\gamma$ collision axis in the $\gamma\gamma$ center-of-mass frame. The large background of leptonic events is suppressed by utilizing the CsI calorimeter in conjunction with the muon chamber system. The reported cross section is compared with leading order QCD models as well as previous experiments. In particular, although the functional dependence of the measured cross section disagrees with leading order QCD at small values of the two-photon invariant mass, the data show a transition to perturbative behavior at an invariant mass of approximately 2.5 GeV/$c^2$. hardcopies with figures can be obtained by writing to to: Pam Morehouse preprint secretary Newman Lab Cornell University Ithaca, NY 14853 or by sending mail to: preprints@lns62.lns.cornell.edu, Comment: 15 pages (in REVTEX format)
Published: 1994

238. Measurement of Cabibbo-Suppressed Decays of theτLepton

Author: F. Butler, R. Malchow, D. M. Coffman, John Yelton, M. Lambrecht, P. Gaiderev, B. K. Heltsley, G. C. Moneti, C. M. Daubenmier, Ryszard Stroynowski, Barry C. Barish, C. D. Jones, N. Kwak, E. I. Shibata, M. Sapper, S. Menary, Dave Britton, R. L. McIlwain, P. S. Drell, Jorge Luis Rodriguez, V. Shelkov, S. Schrenk, P. Rankin, G. D. Gollin, M. Saulnier, D. Payne, H. A. Cho, D. Fujino, P. M. Patel, J. S. Miller, M. Goldberg, J. J. O'Neill, B. Nemati, M. Thulasidas, D. Riley, R. Kennett, R. Ammar, Chunjie Wang, D. He, Pu Wang, D. H. Miller, Y. Kwon, T. E. Browder, G. Crawford, H. Kagan, D. Cinabro, N. Copty, W. R. Ross, B. Gittelman, H. Yamamoto, Maurice Garcia-Sciveres, P. L. Wang, J. Bartelt, D. Z. Besson, Jungil Lee, H. Severini, S. Chan, R. Davis, M. Daoudi, B. Ong, R. Ehrlich, I. P.J. Shipsey, Ha Lam, I. Volobouev, S. Patton, C. O'Grady, K. K. Gan, M. L. Kelly, J. Fast, D. G. Cassel, Christopher G. White, Y. Skovpen, S. L. Jones, P. Skubic, X. Fu, G. Vasseur, Yuichi Kubota, S. W. Gray, R. J. Morrison, I. J. Kim, H. Tajima, Marina Artuso, J. Dominick, D. Acosta, K. W. Edwards, Mats A Selen, Z. Egyed, Daniel Johnson, M. Procario, D. Perticone, V. Savinov, D. Sperka, Ruifang Wang, Shengfeng Yang, A. J. Sadoff, Richard Wilson, Yoram Rozen, F. Würthwein, T. Bergfeld, J. Masui, Philip Baringer, D. L. Kreinick, S. Salman, S. Ball, K. Honscheid, D. F. Cowen, B. I. Eisenstein, M. M. Zoeller, Michael Wood, J. Urheim, B. Geiser, C. R. Sun, W. T. Ford, Vivek Jain, M. Modesitt, J. K. Nelson, T. Liu, R. D. Kass, R. Balest, T. Miao, R. Mountain, D. L. Hartill, J. G. Smith, Jon J Thaler, K. Cho, M.A. Palmer, C. Bebek, Sheldon Stone, Paul Avery, R. Poling, N. B. Mistry, S. Roberts, M. Battle, C. R. Ng, M. Lohner, A. P. Freyberger, J. Mevissen, J. Kandaswamy, George R. Kalbfleisch, Michael S. Witherell, D. Peterson, J. Snow, G. Zhu, G. Masek, Juliet Ritchie Patterson, T. Skwarnicki, P. C. Kim, S. Henderson, T. K. Nelson, S. Sanghera, N. Hancock, G. Wei, K. Lingel, M. Sivertz, Alice Bean, H. P. Paar, R. Fulton, R. Kutschke, M. S. Alam, J. Ernst, E. R.F. Hyatt, M. Lattery, P. Zadorozhny, F. Muheim, D. N. Brown, S. Playfer, C. Qiao, E. Nordberg, Jeffrey Richman, Kenneth Bloom, S. Nakanishi, E. H. Thorndike, G. S. Ludwig, N. Katayama, D. B. MacFarlane, D. S. Akerib, A. J. Weinstein, D. Coppage, J. P. Alexander, G. Eigen, H. N. Nelson, M. Ogg, R. S. Galik, Y. Muheim, J. Gronberg, N. Horwitz, M. Chadha, M. Sung, R. Stephens, S. E. Csorna, Karl Berkelman, K. Kinoshita, Anders Ryd, and M. Athanas
Subjects: Physics, Semileptonic decay, High Energy Physics - Phenomenology, Particle decay, Particle physics, Meson, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, Elementary particle, Cornell Electron Storage Ring, High Energy Physics - Experiment
Abstract: Branching ratios for the dominant Cabibbo-suppressed decays of the $\tau$ lepton have been measured by CLEO~II in $e^+ e^-$ annihilation at CESR ($\sqrt{s} \sim 10.6$~GeV) using kaons with momenta below $0.7\ \rm GeV/c$. The inclusive branching ratio into one charged kaon is $(1.60 \pm 0.12 \pm 0.19)\%$. For the exclusive decays, $B(\tau \to K^-) = (0.66 \pm 0.07 \pm 0.09)\%$, $B(\tau \to K^- \pi^0) = (0.51 \pm 0.10 \pm 0.07)\%$, and, based on three events, $B(\tau \to K^- \pi^0 \pi^0) < 0.3\%$ at the 90\% confidence level. These represent significant improvements over previous results. $B(\tau\to K^- \pi^0)$ is measured for the first time with exclusive $\pi^0$ reconstruction., Comment: 11 pages uuencoded compressed postscript (process with uudecode then gunzip). hardcopies with figures can be obtained by sending mail to: preprints@lns62.lns.cornell.edu
Published: 1994

239. Study of the five-charged-pion decay of the τ lepton

Author: J. J. Thaler, Anders Ryd, M. Athanas, N. Hancock, D. R. Johnson, J. Urheim, T. K. Nelson, B. Nemati, M. Battle, A. J.R. Weinstein, R. Ammar, G. Vasseur, Igor Volobouev, M. M. Zoeller, E. H. Thorndike, R. Stephens, M. Sapper, S. E. Csorna, D. Cinabro, R. Kennett, S. Chan, Shawn W. Henderson, K. Lingel, D. Coppage, F. Butler, X. Fu, J. P. Alexander, B. Gittelman, S. Schrenk, S. Roberts, T. Liu, M. Modesitt, H. A. Cho, K. Kinoshita, N. Kwak, John E. Bartelt, Cong Wang, M. Garcia-Sciveres, G.R. Kalbfleisch, W. R. Ross, Y. J. Kwon, K. Honscheid, D. Riley, H. Yamamoto, S. Sanghera, Pu Wang, I. J. Kim, N. Horwitz, M. Chadha, Darin Acosta, A. P. Freyberger, S. Menary, E.R.F. Hyatt, K. W. Edwards, R. J. Wilson, Vipul Jain, J. Masui, R. Wang, James E. Fast, D. G. Cassel, Dave Britton, R. S. Galik, John Yelton, D. Z. Besson, C. R. Ng, R. L. McIlwain, Yurii V. Mukhin, P. Skubic, D. H. Miller, D. L. Kreinick, C. Bebek, D. L. Hartill, T. Miao, Ryszard Stroynowski, D. Fujino, M. Daoudi, T. E. Browder, R. L. Malchow, Michael S. Witherell, M.K. Sung, F. Muheim, M.A. Palmer, P. Gaidarev, R. Poling, Robert K. Kutschke, David Sperka, J. Dominick, Christopher G. White, V.G. Shelkov, D. S. Crowcroft, Alice Bean, Yuichi Kubota, V. Savinov, Karl Berkelman, N. Copty, D. He, Barry C. Barish, C. R. Sun, P. Rankin, E. I. Shibata, W. T. Ford, R. D. Kass, D. B. MacFarlane, Ha Lam, J. D. Richman, R. Balest, P. S. Drell, Y. I. Skovpen, C. Qiao, B. Spaan, B. I. Eisenstein, Glen D. Crawford, D. M. Coffman, R. Davis, H. Kagan, G. Masek, Juliet Ritchie Patterson, George D Gollin, H. N. Nelson, M. Lattery, S. Kotov, B. Ong, B. K. Heltsley, M. Saulnier, J. L. Rodriguez, Alain Bellerive, P. M. Patel, L. K. Gibbons, S. Playfer, C. P. O'Grady, Jungil Lee, Frank Würthwein, K. Cho, M. Procario, Shengfeng Yang, J. Gronberg, R. Mountain, B. Geiser, H. P. Paar, R. Fulton, N. B. Mistry, Horst Severini, M. S. Alam, S. Nakanishi, D. F. Cowen, R. J. Morrison, Mats A Selen, M. Kelly, J. Mevissen, J. Kandaswamy, Sheldon Stone, M. Lohner, G. Wei, J. J. O'Neill, A. J. Sadoff, E. Nordberg, Paul Avery, J. A. Ernst, G. S. Ludwig, Z. Egyed, D. Peterson, T. Bergfeld, Kenneth Bloom, Yoram Rozen, N. Katayama, G. Eigen, D. Gibaut, Philip Baringer, S. J. Patton, S. Ball, Xiangjun Xing, H. Tajima, Marina Artuso, P. Zadorozhny, R. Ehrlich, S. L. Jones, K. K. Gan, T. Skwarnicki, P. C. Kim, M. Goldberg, G. C. Moneti, J. S. Miller, M. Ogg, M. Thulasidas, G. Zhu, D. J. Payne, M. Momayezi, S. W. Gray, D. Perticone, M. Lambrecht, I. P. J. Shipsey, Ilya Kravchenko, S. Salman, Janice Nelson, C. D. Jones, Michael Wood, J. G. Smith, and C. M. Daubenmier
Subjects: Semileptonic decay, Physics, Crystallography, Particle physics, Particle decay, Pion, Meson, Branching fraction, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, General Physics and Astronomy, Cornell Electron Storage Ring, Lepton
Abstract: The branching fractions for the five-charged-particle decays of the [tau] lepton have been measured in [ital e][sup +][ital e][sup [minus]] annihilations using the CLEO II detector at the Cornell Electron Storage Ring. Assuming all charged particles to be pions, the results are [ital B](3[pi][sup [minus]]2[pi][sup +][ge]0 neutrals [nu][sub [tau]])=(0.097[plus minus]0.005[plus minus]0.011)%, [ital B](3[pi][sup [minus]]2[pi][sup +][nu][sub [tau]])=(0.077[plus minus]0.005 [plus minus]0.009)%, [ital B](3[pi][sup [minus]]2[pi][sup +][pi][sup 0][nu][sub [tau]])=(0.019[plus minus]0.004[plus minus]0.004)%, and [ital B](3[pi][sup [minus]]2[pi][sup +]2[pi][sup 0][nu][sub [tau]])[lt]0.011% at the 90% C.L. [ital B](3[pi][sup [minus]]2[pi][sup [minus]][pi][sup 0][nu][sub [tau]]) is measured for the first time by exclusive [pi][sup 0] reconstruction. The results are compared with the predictions from the partially conserved-axial-current and conserved-vector-current hypotheses assuming isospin invariance.
Published: 1994

240. Precision measurement of theDs*+-Ds+mass difference

Author: Jungil Lee, D. L. Hartill, S. Roberts, K. Honscheid, N. Copty, E. H. Thorndike, E.R.F. Hyatt, Glen D. Crawford, D. Coppage, J. P. Alexander, K. W. Edwards, D. H. Miller, K. Lingel, T. Liu, M. Modesitt, T. K. Nelson, A. P. Freyberger, D. R. Johnson, J. Snow, Robert Wilson, R. Ammar, Cong Wang, S. Chan, Anders Ryd, M. Athanas, P. S. Drell, G. Vasseur, M. Garcia-Sciveres, S. J. Patton, John Yelton, Igor Volobouev, M. M. Zoeller, G. Wei, D. Z. Besson, M. Daoudi, M. Saulnier, H. Kagan, P. Skubic, Vipul Jain, J. Urheim, Yoram Rozen, S. Schrenk, M. Lambrecht, S. Playfer, C. P. O'Grady, M. S. Alam, Z. Egyed, D. Cinabro, R. Kennett, Ha Lam, Marina Artuso, Philip Baringer, R. J. Morrison, R. Stephens, S. E. Csorna, P. Zadorozhny, D. N. Brown, David Sperka, S. Ball, S. Sanghera, Pu Wang, Darin Acosta, D. He, Shawn W. Henderson, J. D. Richman, B. Gittelman, X. Fu, E. I. Shibata, Ryszard Stroynowski, D. Fujino, Robert K. Kutschke, Mats A Selen, A. J. Sadoff, R. Mountain, H. Tajima, I. P. J. Shipsey, F. Butler, B. Nemati, H. A. Cho, I. J. Kim, S. Salman, K. Kinoshita, Janice Nelson, C. D. Jones, T. Bergfeld, Michael Wood, Y. J. Kwon, Karl Berkelman, S. Menary, Y. I. Skovpen, P. Rankin, R. Ehrlich, H. Yamamoto, John E. Bartelt, G.R. Kalbfleisch, M. Lattery, J. L. Rodriguez, B. Ong, B. C. Barish, C. Qiao, D. G. Cassel, N. Kwak, J. Masui, S. L. Jones, R. Davis, Frank Würthwein, George D Gollin, D. J. Payne, M. Battle, R. Wang, S. Nakanishi, K. Cho, D. Peritcone, J. Gronberg, A. J.R. Weinstein, P. Gaiderev, N. Horwitz, M. Chadha, T. Miao, N. B. Mistry, J. S. Miller, R. Poling, H. P. Paar, R. Fulton, B. Geiser, James E. Fast, M. Thulasidas, Dave Britton, R. L. McIlwain, P. M. Patel, F. Muheim, P. L. Wang, J. J. Thaler, N. Hancock, R. L. Malchow, Christopher G. White, D. Riley, Shengfeng Yang, W. R. Ross, E. Nordberg, B. I. Eisenstein, G. S. Ludwig, M. Lohner, S. W. Gray, D. M. Coffman, D. F. Cowen, D. B. MacFarlane, J. J. O'Neill, M. Sapper, C. R. Sun, W. T. Ford, M.A. Palmer, H. N. Nelson, Yuichi Kubota, V.G. Shelkov, R. D. Kass, Yurii V. Mukhin, R. Balest, M. Kelly, J. Mevissen, J. G. Smith, J. Kandaswamy, C. M. Daubenmier, B. K. Heltsley, J. A. Ernst, D. Peterson, C. R. Ng, Sheldon Stone, Paul Avery, Michael S. Witherell, M.K. Sung, G. Masek, Juliet Ritchie Patterson, M. Procario, Horst Severini, D. L. Kreinick, C. Bebek, T. E. Browder, J. Dominick, V. Savinov, K. K. Gan, T. Skwarnicki, P. C. Kim, M. Goldberg, G. C. Moneti, M. Ogg, G. Zhu, Kenneth Bloom, N. Katayama, D. S. Akerib, G. Eigen, and Alice Bean
Subjects: Nuclear physics, Physics, Systematic error, Particle physics, Meson, Electron–positron annihilation, Radiative decay, Measure (mathematics)
Abstract: We have measured the vector-pseudoscalar mass splitting M(D s * + )-M(D s + )=144.22±0.47±0.37 MeV significantly more precisely than the previous world average. We minimize the systematic errors by also measuring the vector-pseudoscalar mass difference M(D* 0 )-M(D 0 ) using the radiative decay D* 0 →D 0 γ, obtaining [M(D s * + )-M(D s + )]-[M(D* 0 )-M(D 0 )] =2.09±0.47±0.37 MeV. This is then combined with our previous high-precision measurement of M(D* 0 )-M(D 0 ), which used the decay D* 0 →D 0 π 0 . We also measure the mass difference M(D s + )-M(D + )=99.5±0.6±0.3 MeV, using the φπ + decay modes of the D s + and D + mesons.
Published: 1994

241. Exclusive hadronicBdecays to charm and charmonium final states

Author: Ian Shipsey, M. Modesitt, A. P. Freyberger, Robert K. Kutschke, H. A. Cho, S. Playfer, C. P. O'Grady, D. B. MacFarlane, Karl Berkelman, J. Snow, H. N. Nelson, R. J. Morrison, Mats A Selen, P. Skubic, A. J. Sadoff, C. R. Ng, N. Horwitz, M. Chadha, D. G. Cassel, Shawn W. Henderson, X. Fu, M.K. Sung, Shengfeng Yang, Harris Kagan, P. S. Drell, J. Gronberg, H. P. Paar, R. Fulton, James E. Fast, D. L. Kreinick, C. Bebek, D. F. Cowen, R. Poling, D. Z. Besson, D. L. Hartill, M. Saulnier, D. J. Payne, Daniel Schmidt, M. Daoudi, P. M. Patel, D. R. Johnson, P. L. Wang, S. J. Patton, W. R. Ross, J. L. Rodriguez, E. Nordberg, N. Hancock, J. Dominick, M. Ogg, G. Zhu, Kenneth Bloom, D. Cinabro, R. Kennett, Younghoon Kwon, G. S. Ludwig, M. Garcia-Sciveres, D. H. Miller, B. I. Eisenstein, V. Savinov, N. Copty, Vipul Jain, J. Urheim, Anders Ryd, K. Lingel, M. Athanas, B. Gittelman, G. Wei, K. Cho, R. Davis, Richard Wilson, Jon J Thaler, N. Katayama, S. Menary, D. S. Akerib, George D Gollin, M. Sapper, Ryszard Stroynowski, D. Fujino, Yurii V. Mukhin, Ha Lam, J. D. Richman, Glen D. Crawford, N. B. Mistry, G. Masek, I. J. Kim, G. Eigen, Z. Egyed, Marina Artuso, P. Rankin, S. Schrenk, Juliet Ritchie Patterson, K. K. Gan, T. Skwarnicki, P. Zadorozhny, Sheldon Stone, Paul Avery, D. M. Coffman, M. S. Alam, F. Ẅrthwein, P. C. Kim, M. Procario, B. K. Heltsley, Cong Wang, B. Nemati, M. Goldberg, T. Bergfeld, K. Honscheid, R. Stephens, S. E. Csorna, John Yelton, S. W. Gray, Horst Severini, G. C. Moneti, Y. I. Skovpen, M. Lattery, F. Butler, E.R.F. Hyatt, B. Ong, D. Riley, K. W. Edwards, R. Mountain, K. Kinoshita, F. Muheim, D. Perticone, T. Miao, N. Kwak, John E. Bartelt, G.R. Kalbfleisch, M. Battle, S. Nakanishi, M. S. Witherell, B. Geiser, A. J.R. Weinstein, M. Lambrecht, D. N. Brown, S. Roberts, Dave Britton, R. L. McIlwain, F. Morrow, Alice Bean, R. Ammar, R. L. Malchow, S. Chan, M. Kelly, S. Salman, Janice Nelson, C. D. Jones, Michael Wood, J. Mevissen, Christopher G. White, Yuichi Kubota, J. Kandaswamy, J. A. Ernst, C. R. Sun, W. T. Ford, R. D. Kass, J. G. Smith, D. Peterson, C. M. Daubenmier, R. Balest, J. Masui, T. K. Nelson, G. Vasseur, Igor Volobouev, M. M. Zoeller, David Sperka, C. Qiao, E. H. Thorndike, D. Coppage, J. P. Alexander, M. Lohner, J. J. O'Neill, D. He, Barry C. Barish, E. I. Shibata, S. Sanghera, Pu Wang, Darin Acosta, Jungil Lee, M.A. Palmer, V.G. Shelkov, Thomas E. Browder, H. Yamamoto, R. Wang, Yoram Rozen, Philip Baringer, S. Ball, J. S. Miller, M. Thulasidas, H. Tajima, R. Ehrlich, S. L. Jones, and T. Liu
Subjects: Physics, Particle physics, Meson, Branching fraction, Electron–positron annihilation, Hadron, FOS: Physical sciences, Elementary particle, Quarkonium, High Energy Physics - Experiment, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), Particle decay, High Energy Physics - Phenomenology (hep-ph), TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, High Energy Physics::Experiment, B meson
Abstract: We have fully reconstructed decays of both B0 and B- Mesons into final states containing either D, D*, D**, Psi, Psi', or Chi_{c1} mesons. This allows us to obtain new results on many physics topics including branching ratios, tests of the factorization hypothesis, color suppression, resonant substructure, and the B- - B0 mass difference., Comment: 37 pages. uuencoded compressed postscript (process with uudecode, then gunzip). 31 postscript figures available on request. CLNS-94-1270
Published: 1994

242. Measurement of the branching fractionscrB(τ−→h−→π0ντ)

Author: Robert K. Kutschke, H. Kagan, D. Perticone, D. Riley, M. Lambrecht, David Sperka, Karl Berkelman, Yuichi Kubota, S. Playfer, I. P. J. Shipsey, M. Kelly, S. Roberts, R. Ammar, H. A. Cho, Alain Bellerive, J. Mevissen, P. M. Patel, S. Chan, Ilya Kravchenko, D. H. Miller, S. Salman, Janice Nelson, C. D. Jones, Michael Wood, D. Payne, J. Kandaswamy, K. K. Gan, T. Skwarnicki, P. Gaidarev, R. J. Morrison, C. R. Ng, J. J. Thaler, Mats A Selen, N. Hancock, Y. Skovpen, A. J. Sadoff, Michael S. Witherell, M.K. Sung, P. S. Drell, J. A. Ernst, P. C. Kim, C. Qiao, L. K. Gibbons, N. Horwitz, M. Chadha, John E. Bartelt, D. R. Johnson, N. Kwak, J. Urheim, M. Saulnier, G.R. Kalbfleisch, D. Peterson, G. Masek, Shengfeng Yang, V. Shelkov, Juliet Ritchie Patterson, M. Goldberg, G. C. Moneti, S. Menary, M. Momayezi, T. Liu, M. Sapper, M. Modesitt, B. Nemati, D. Cinabro, R. Kennett, Ha Lam, E. H. Thorndike, J. D. Richman, S. W. Gray, S. Schrenk, B. Gittelman, A. P. Freyberger, M. Battle, Cong Wang, M. Procario, Horst Severini, Anders Ryd, M. Athanas, A. J.R. Weinstein, I. J. Kim, Dave Britton, R. L. McIlwain, D. Coppage, W. R. Ross, John Yelton, M. Lattery, F. Muheim, B. C. Barish, Alice Bean, D. F. Cowen, M. Garcia-Sciveres, Vipul Jain, Sheldon Stone, Y. J. Kwon, J. P. Alexander, J. Masui, T. K. Nelson, Yurii V. Mukhin, D. G. Cassel, D. L. Hartill, Paul Avery, J. G. Smith, Ryszard Stroynowski, D. Fujino, S. Kotov, B. Geiser, C. M. Daubenmier, R. Stephens, S. E. Csorna, Igor Volobouev, M. M. Zoeller, G. Wei, T. Miao, D. S. Crowcroft, J. Fast, P. Rankin, R. L. Malchow, F. Butler, Christopher G. White, R. S. Galik, M. Lohner, N. Copty, M. S. Alam, J. J. O'Neill, R. Poling, K. Kinoshita, Z. Egyed, J. L. Rodriguez, C. R. Sun, W. T. Ford, Frank Würthwein, K. Cho, R. D. Kass, R. Balest, Glen D. Crawford, N. B. Mistry, T. Bergfeld, K. Honscheid, B. I. Eisenstein, B. Ong, E.R.F. Hyatt, R. Davis, B. Spaan, Kenneth Bloom, K. W. Edwards, George D Gollin, M. Ogg, G. Zhu, N. Katayama, S. Nakanishi, G. Eigen, R. Mountain, Robert Wilson, S. J. Patton, Marina Artuso, P. Zadorozhny, H. Yamamoto, R. Wang, M.A. Palmer, Jungil Lee, S. Sanghera, Pu Wang, Darin Acosta, D. He, E. I. Shibata, G. Vasseur, P. Skubic, K. Lingel, M. Sivertz, Yoram Rozen, Shawn W. Henderson, X. Fu, Philip Baringer, S. Ball, Xiangjun Xing, J. S. Miller, C. O'Grady, D. B. MacFarlane, M. Thulasidas, D. Z. Besson, M. Daoudi, H. Tajima, H. N. Nelson, R. Ehrlich, S. L. Jones, J. Gronberg, H. P. Paar, R. Fulton, D. M. Coffman, B. K. Heltsley, E. Nordberg, G. S. Ludwig, D. L. Kreinick, C. Bebek, T. E. Browder, J. Dominick, and V. Savinov
Subjects: Semileptonic decay, Combinatorics, Physics, Particle model, Branching fraction, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, TheoryofComputation_GENERAL, General Physics and Astronomy, Combined result, Cornell Electron Storage Ring, MathematicsofComputing_DISCRETEMATHEMATICS
Abstract: Using data from the CLEO II detector at the Cornell Electron Storage Ring, we measure [ital scrB]([tau][sup [minus]][r arrow][ital h][sup [minus]][pi][sup 0][nu][sub [tau]]) where [ital h][sup [minus]] refers to either [pi][sup [minus]] or [ital K][sup [minus]]. We use three different methods to measure this branching fraction. The combined result is [ital scrB]([tau][sup [minus]][r arrow][ital h][sup [minus]][pi][sup 0][nu][sub [tau]])=0.2587[plus minus]0.0012[plus minus]0.0042, in good agreement with standard model predictions.
Published: 1994

243. First measurement ofΓ(Ds+→μ+ν)Γ(Ds+→φπ+)

Author: D. Acosta, M. Athanas, G. Masek, H. Paar, A. Bean, J. Gronberg, R. Kutschke, S. Menary, R. J. Morrison, S. Nakanishi, H. N. Nelson, T. K. Nelson, J. D. Richman, A. Ryd, H. Tajima, D. Schmidt, D. Sperka, M. S. Witherell, M. Procario, S. Yang, R. Balest, K. Cho, M. Daoudi, W. T. Ford, D. R. Johnson, K. Lingel, M. Lohner, P. Rankin, J. G. Smith, J. P. Alexander, C. Bebek, K. Berkelman, D. Besson, T. E. Browder, D. G. Cassel, H. A. Cho, D. M. Coffman, P. S. Drell, R. Ehrlich, R. S. Galik, M. Garcia-Sciveres, B. Geiser, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, C. D. Jones, S. L. Jones, J. Kandaswamy, N. Katayama, P. C. Kim, D. L. Kreinick, G. S. Ludwig, J. Masui, J. Mevissen, N. B. Mistry, C. R. Ng, E. Nordberg, M. Ogg, J. R. Patterson, D. Peterson, D. Riley, S. Salman, M. Sapper, H. Worden, F. Würthwein, P. Avery, A. Freyberger, J. Rodriguez, R. Stephens, J. Yelton, D. Cinabro, S. Henderson, K. Kinoshita, T. Liu, M. Saulnier, F. Shen, R. Wilson, H. Yamamoto, B. Ong, M. Selen, A. J. Sadoff, R. Ammar, S. Ball, P. Baringer, D. Coppage, N. Copty, R. Davis, N. Hancock, M. Kelly, N. Kwak, H. Lam, Y. Kubota, M. Lattery, J. K. Nelson, S. Patton, D. Perticone, R. Poling, V. Savinov, S. Schrenk, R. Wang, M. S. Alam, I. J. Kim, B. Nemati, J. J. O'Neill, H. Severini, C. R. Sun, M. M. Zoeller, G. Crawford, C. M. Daubenmier, R. Fulton, D. Fujino, K. K. Gan, K. Honscheid, H. Kagan, R. Kass, J. Lee, R. Malchow, F. Morrow, Y. Skovpen, M. Sung, C. White, J. Whitmore, P. Wilson, F. Butler, X. Fu, G. Kalbfleisch, M. Lambrecht, W. R. Ross, P. Skubic, J. Snow, P. L. Wang, M. Wood, D. Bortoletto, D. N. Brown, J. Fast, R. L. McIlwain, T. Miao, D. H. Miller, M. Modesitt, S. F. Schaffner, E. I. Shibata, I. P. J. Shipsey, P. N. Wang, M. Battle, J. Ernst, H. Kroha, S. Roberts, K. Sparks, E. H. Thorndike, C. H. Wang, J. Dominick, S. Sanghera, V. Shelkov, T. Skwarnicki, R. Stroynowski, I. Volobouev, P. Zadorozhny, M. Artuso, D. He, M. Goldberg, N. Horwitz, R. Kennett, G. C. Moneti, F. Muheim, Y. Mukhin, S. Playfer, Y. Rozen, S. Stone, M. Thulasidas, G. Vasseur, G. Zhu, J. Bartelt, S. E. Csorna, Z. Egyed, V. Jain, P. Sheldon, D. S. Akerib, B. Barish, M. Chadha, S. Chan, D. F. Cowen, G. Eigen, J. S. Miller, C. O'Grady, J. Urheim, and A. J. Weinstein
Subjects: Physics, Combinatorics, Particle physics, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Pi
Abstract: We present a measurement of [Gamma]([ital D][sub [ital s]][sup +][r arrow][mu][sup +][nu])/[Gamma]([ital D][sub [ital s]][sup +][r arrow][phi][pi][sup +])= 0.245[plus minus]0.052[plus minus]0.074. Using this ratio and [ital scrB]([ital D][sub [ital s]][sup +][r arrow][phi][pi][sup +])=(3.7[plus minus]0.9)% we extract [ital f][sub [ital D][ital s]]=344[plus minus]37[plus minus]52[plus minus]42 MeV, where the last error is due to the uncertainty in the [ital D][sub [ital s]][sup +][r arrow][phi][pi][sup +] absolute branching ratio. This result is larger than most theoretical predictions.
Published: 1994

244. Measurement of the branching fraction forD+→K−π+π+

Author: W. R. Ross, D. Cinabro, R. Kennett, H. Yamamoto, B. Gittelman, J. Gronberg, I. J. Kim, M. S. Alam, H. P. Paar, R. Fulton, S. J. Patton, R. Wang, R. L. Malchow, Christopher G. White, J. Masui, Ian Shipsey, J. L. Rodriguez, N. Kwak, R. Davis, Marina Artuso, P. Zadorozhny, K. Cho, N. B. Mistry, Y. I. Skovpen, J. J. Thaler, P. S. Drell, C. R. Sun, W. T. Ford, George D Gollin, N. Hancock, Dave Britton, R. L. McIlwain, D. He, E. I. Shibata, M. Saulnier, E. Nordberg, R. D. Kass, R. Balest, Shengfeng Yang, M. Kelly, G. Masek, N. Horwitz, J. Mevissen, D. M. Coffman, Juliet Ritchie Patterson, B. Ong, J. Kandaswamy, B. K. Heltsley, G. S. Ludwig, K. Lingel, P. Gaiderev, D. F. Cowen, Jungil Lee, M. Procario, M. Sapper, M. Chadha, B. Geiser, J. A. Ernst, D. L. Kreinick, C. Bebek, D. Z. Besson, P. Skubic, T. E. Browder, E. H. Thorndike, Ha Lam, D. Peterson, Horst Severini, J. D. Richman, S. Schrenk, M. Garcia-Sciveres, P. M. Patel, M. Daoudi, James E. Fast, M. Lohner, J. J. O'Neill, R. J. Wilson, Vipul Jain, John E. Bartelt, T. K. Nelson, J. Dominick, V. Savinov, G.R. Kalbfleisch, H. A. Cho, Y. J. Kwon, Shawn W. Henderson, M. Lattery, B. C. Barish, D. H. Miller, Ryszard Stroynowski, D. Fujino, D. Coppage, X. Fu, J. P. Alexander, C. R. Ng, F. Wrthwein, M.A. Palmer, P. Rankin, V.G. Shelkov, Michael S. Witherell, T. Miao, M.K. Sung, D. R. Johnson, S. Sanghera, Pu Wang, S. Nakanishi, R. Mountain, S. Roberts, Robert K. Kutschke, Sheldon Stone, D. B. MacFarlane, Darin Acosta, G. Vasseur, Tomasz Skwarnicki, Paul Avery, D. Riley, Igor Volobouev, M. M. Zoeller, T. Liu, M. Modesitt, G. Wei, H. N. Nelson, Karl Berkelman, K. Honscheid, David Sperka, J. Urheim, Yuichi Kubota, E.R.F. Hyatt, Alice Bean, D. G. Cassel, A. P. Freyberger, K. W. Edwards, C. Qiao, Anders Ryd, M. Athanas, Z. Egyed, R. Poling, B. Nemati, R. Stephens, S. E. Csorna, J. Snow, F. Butler, Kenneth Bloom, B. I. Eisenstein, M. Battle, T. Bergfeld, K. Kinoshita, N. Katayama, D. S. Akerib, A. J.R. Weinstein, G. Eigen, P. L. Wang, H. Kagan, S. Playfer, C. P. O'Grady, R. Ammar, R. J. Morrison, S. Chan, Mats A Selen, A. J. Sadoff, Cong Wang, John Yelton, S. Menary, D. L. Hartill, N. Copty, Glen D. Crawford, F. Muheim, M. Ogg, G. Zhu, K. K. Gan, P. C. Kim, M. Goldberg, G. C. Moneti, J. S. Miller, M. Thulasidas, H. Tajima, R. Ehrlich, S. L. Jones, Yoram Rozen, Philip Baringer, S. Ball, Yurii V. Mukhin, D. Perticone, M. Lambrecht, D. N. Brown, S. Salman, Janice Nelson, C. D. Jones, Michael Wood, D. J. Payne, S. W. Gray, J. G. Smith, and C. M. Daubenmier
Subjects: Physics, Stereochemistry, Branching fraction, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, General Physics and Astronomy, Atomic physics, Cornell Electron Storage Ring
Abstract: Using the CLEO II detector at the Cornell Electron Storage Ring we have measured the ratio of branching fractions, B([ital D][sup +][r arrow][ital K][sup [minus]][pi][sup +][pi][sup +])/([ital D][sup 0][r arrow][ital K][sup [minus]][pi][sup +])=2.35[plus minus]0.16[plus minus]0.16. Our recent measurement of [ital scrB]([ital D][sup 0][r arrow][ital K][sup [minus]][pi][sup +]) then gives [ital scrB]([ital D][sup +][r arrow][ital K][sup [minus]][pi][sup +][pi][sup +])=(9.3[plus minus]0.6[plus minus]0.8)%.
Published: 1994

245. Observation ofΛc+ decays to Λπ+π0, Σ0π+, Σ0π+π0, and Σ0π−π+π+

Author: P. Zadorozhny, F. Muheim, B. Nemati, F. Morrow, D. Besson, T. K. Nelson, P. S. Drell, S. Nakanishi, H. Kagan, E. H. Thorndike, D. N. Brown, S. Playfer, Jorge Luis Rodriguez, D. Riley, M. Saulnier, D. Coppage, S. F. Schaffner, J. Bartelt, J. P. Alexander, Anders Ryd, M. Athanas, K. Sparks, R. J. Morrison, Mats A Selen, H. A. Cho, A. J. Sadoff, D. He, Yuichi Kubota, D. Fujino, J. J. O'Neill, D. L. Hartill, M. Sapper, T. E. Browder, W. R. Ross, Daniel Schmidt, Richard Wilson, R. Kennett, R. Poling, C. R. Ng, Yurii V. Mukhin, M. S. Alam, B. Gittelman, I. Volobouev, Michael S. Witherell, G. C. Moneti, Marina Artuso, P. Wilson, A. J. Weinstein, J. Ernst, I. J. Kim, R. Stephens, G. Crawford, M. Lattery, J. Urheim, H. N. Nelson, S. E. Csorna, E. I. Shibata, P. Skubic, D. M. Coffman, B. K. Heltsley, N. Kwak, K. Kinoshita, Daniela Bortoletto, N. Copty, I. P.J. Shipsey, C. R. Sun, F. Butler, W. T. Ford, K. Cho, R. Malchow, D. Cinabro, R. D. Kass, R. Balest, N. B. Mistry, J. Whitmore, Jungil Lee, S. Menary, B. Geiser, John Yelton, J. Gronberg, S. Patton, N. Horwitz, R. L. McIlwain, M. Chadha, D. H. Miller, F. Shen, R. Davis, H. P. Paar, R. Fulton, Maurice Garcia-Sciveres, R. Ammar, G. Masek, V. Shelkov, S. Schrenk, M. Lohner, D. Acosta, Juliet Ritchie Patterson, J. Mevissen, Daniel Johnson, X. Fu, T. Liu, T. Skwarnicki, M. Daoudi, J. Kandaswamy, Sheldon Stone, S. Sanghera, H. Severini, S. Chan, C. Bebek, Paul Avery, D. L. Kreinick, M. L. Kelly, K. K. Gan, Y. Skovpen, P. C. Kim, S. Henderson, N. Hancock, D. Peterson, A. P. Freyberger, C. O'Grady, George R. Kalbfleisch, S. W. Gray, K. Honscheid, H. Tajima, Hubert Kroha, S. Roberts, J. Snow, Pu Wang, M. Modesitt, M. Battle, M. Sung, E. Nordberg, Jeffrey Richman, G. S. Ludwig, M. M. Zoeller, Karl Berkelman, J. G. Smith, D. G. Cassel, M. Ogg, G. Zhu, T. Miao, K. Lingel, M. Procario, S. Salman, Michael Wood, H. Worden, M. Lambrecht, A. Bean, J. K. Nelson, S. Yang, B. Ong, J. Fast, Christopher G. White, Z. Egyed, D. Sperka, Ruifang Wang, D. F. Cowen, P. L. Wang, C. M. Daubenmier, Ryszard Stroynowski, P. Rankin, Chunjie Wang, D. Perticone, V. Savinov, Yoram Rozen, F. Würthwein, Philip Baringer, S. Ball, J. S. Miller, M. Thulasidas, R. Ehrlich, N. Katayama, S. L. Jones, D. S. Akerib, J. Dominick, G. Eigen, R. Kutschke, H. Yamamoto, Ha Lam, G. Vasseur, B. C. Barish, J. Masui, Vivek Jain, C. D. Jones, and M. Goldberg
Subjects: Nuclear physics, Baryon, Physics, Nuclear and High Energy Physics, Argus, Particle physics, Branching fraction, Branching (polymer chemistry), computer, computer.programming_language
Abstract: We have observed the previously unseen decay modes Λπ+π0, Σ0π+π0 and Σ0π−π+π+ of the charmed baryon Λc+, as well as Λc+→Σ0π+ observed previously by ARGUS. The branching ratios for these four decay modes relative to Λc+→pK−π+ are measured to be 0.73 ±0.09± 0.16, 0.36 ±0.09±0.10, 0.21±0.05±0.05, and 0.21±0.02 ±0.04, respectively. Using the recent CLEO measurement of the branching ratio for Λc+→pK− π+, these modes account for 6% of Λc+ decays.
Published: 1994

246. Observation ofD0→K+π−

Author: J. L. Rodriguez, G. Wei, Anders Ryd, Frank Würthwein, M. Athanas, Z. Egyed, K. Cho, N. B. Mistry, Jungil Lee, E. H. Thorndike, Shawn W. Henderson, R. Mountain, X. Fu, D. L. Kreinick, C. Bebek, D. Perticone, D. Coppage, J. P. Alexander, T. Bergfeld, G. Zhu, M. Lambrecht, Kenneth Bloom, T. E. Browder, D. N. Brown, R. Stephens, S. E. Csorna, H. Kagan, Robert K. Kutschke, W. R. Ross, Karl Berkelman, F. Butler, N. Horwitz, I. P. J. Shipsey, N. Katayama, J. Dominick, M. Chadha, D. S. Akerib, V. Savinov, M.A. Palmer, V.G. Shelkov, James E. Fast, K. Kinoshita, H. Tajima, S. Playfer, C. P. O'Grady, G. Eigen, S. Salman, Janice Nelson, C. D. Jones, Michael Wood, B. Geiser, K. K. Gan, T. Skwarnicki, J. J. Thaler, R. L. Malchow, R. J. Morrison, Mats A Selen, M. Garcia-Sciveres, P. C. Kim, S. Sanghera, Pu Wang, N. Hancock, Christopher G. White, Darin Acosta, M. Goldberg, T. Liu, G. C. Moneti, M. Modesitt, A. J. Sadoff, R. J. Wilson, Vipul Jain, M. S. Alam, David Sperka, C. R. Sun, M. Lohner, W. T. Ford, R. D. Kass, R. Balest, M. Kelly, J. Mevissen, J. J. O'Neill, D. L. Hartill, Daniel Schmidt, Alice Bean, Ryszard Stroynowski, D. Fujino, D. G. Cassel, A. P. Freyberger, J. G. Smith, C. M. Daubenmier, D. He, P. Skubic, E. I. Shibata, J. Kandaswamy, P. L. Wang, Yurii V. Mukhin, M. Sapper, P. Rankin, F. Morrow, D. Z. Besson, J. A. Ernst, S. Schrenk, D. J. Payne, R. Ehrlich, R. Poling, N. Copty, Y. I. Skovpen, N. Kwak, J. Snow, H. Yamamoto, M. Daoudi, K. Honscheid, D. Peterson, P. S. Drell, Sheldon Stone, D. H. Miller, Glen D. Crawford, Paul Avery, S. L. Jones, D. M. Coffman, B. Ong, B. I. Eisenstein, Y. J. Kwon, M. Saulnier, Cong Wang, B. K. Heltsley, R. L. McIlwain, R. Wang, Shengfeng Yang, D. Cinabro, R. Kennett, John Yelton, S. Nakanishi, R. Davis, S. W. Gray, J. S. Miller, T. Miao, D. F. Cowen, B. Gittelman, George D Gollin, D. R. Johnson, M. Thulasidas, John E. Bartelt, D. Riley, G.R. Kalbfleisch, I. J. Kim, Yoram Rozen, Yuichi Kubota, Philip Baringer, S. Ball, J. Urheim, B. Nemati, M. Battle, A. J.R. Weinstein, T. K. Nelson, G. Vasseur, Igor Volobouev, M. M. Zoeller, H. A. Cho, C. R. Ng, Michael S. Witherell, M.K. Sung, G. Masek, Juliet Ritchie Patterson, M. Procario, Horst Severini, R. Ammar, S. Chan, F. Muheim, P. Zadorozhny, S. Menary, S. J. Patton, Marina Artuso, K. Lingel, H. N. Nelson, J. Gronberg, H. P. Paar, R. Fulton, E. Nordberg, G. S. Ludwig, S. Roberts, Ha Lam, J. D. Richman, M. Lattery, B. C. Barish, and J. Masui
Subjects: Physics, Particle physics, Stereochemistry, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, General Physics and Astronomy
Abstract: Using the CLEO II data sample, with an integrated luminosity of 1.8 fb[sup [minus]1] at and near the [Upsilon](4[ital S]) resonance, we have observed a signal for [ital D][sup 0][r arrow][ital K][sup +][pi][sup [minus]], which could be due to either [ital D][sup 0][ital [bar D]][sup 0] mixing or doubly Cabibbo suppressed decay, or a combination of the two. We find [ital scrB]([ital D][sup 0][r arrow][ital K][sup +][pi][sup [minus]])/[ital scrB]([ital D][sup 0][r arrow][ital K][sup [minus]][pi][sup +])=0.0077[plus minus]0 .0025(stat) [plus minus]0.0025(syst).
Published: 1994

247. A measurement of

Author: R. Davis, F. Butler, D. Fujino, D. Perticone, Yurii V. Mukhin, E. Nordberg, R. Malchow, J. Masui, M. S. Witherell, B. Gittelman, M. Lambrecht, H. Lam, J. J. O'Neill, Y. Kwon, S. Chan, Yoram Rozen, S. Nakanishi, C. O'Grady, P. Rankin, J. Dominick, G. Zhu, P. S. Drell, I. P.J. Shipsey, H. Kagan, V. Savinov, S. Menary, K. K. Gan, Y. Skovpen, James P. Alexander, M. Thulasidas, R. Ehrlich, D. He, C. R. Ng, G. Masek, B. Ong, P. L. Wang, J. Mevissen, C. M. Daubenmier, Ryszard Stroynowski, H. P. Paar, M. M. Zoeller, N. Katayama, H.N. Nelson, G. Vasseur, M. Selen, J. Gronberg, D. Acosta, T. K. Nelson, J. Kandaswamy, C. R. Sun, A. J. Sadoff, J. Urheim, K. W. Edwards, J. M. Yelton, H.A. Cho, George R. Kalbfleisch, Z. Egyed, R. Ammar, P. Gaiderev, S. Roberts, M. Daoudi, D. F. Cowen, R. J. Morrison, D. R. Johnson, T. Skwarnicki, A. Ryd, A. Bean, I. J. Kim, Vivek Jain, D. Riley, R. Mountain, P. Baringer, B. Geiser, M. Battle, Pu Wang, K. Honscheid, R. D. Kass, G. S. Ludwig, H. Yamamoto, D. Sperka, P. Avery, G. C. Moneti, George D Gollin, P. M. Patel, G. Crawford, J. Snow, P. Skubic, A. J. Weinstein, R. Kennett, J. R. Patterson, J. Rodriguez, D. G. Cassel, S. Yang, S. Sanghera, F. Würthwein, D. Coppage, E. I. Shibata, M. Chadha, T. Bergfeld, S. W. Gray, D. S. Akerib, Jungil Lee, M. Goldberg, D. Payne, D. Peterson, B. Barish, K. Cho, J. Fast, A. Freyberger, K. Berkelman, J. G. Smith, Christopher G. White, B. K. Heltsley, T. Liu, J. K. Nelson, M. Lattery, N. Kwak, Sheldon Stone, E. R.F. Hyatt, S. Henderson, B. I. Eisenstein, M.A. Palmer, E. H. Thorndike, C. Qiao, M. Ogg, G. Wei, S. L. Jones, R. Fulton, T. Miao, R. Kutschke, Jeffrey Richman, J. J. Thaler, William T. Ford, D. B. MacFarlane, Kenneth Bloom, N. Hancock, K. Lingel, R. Stephens, Chunjie Wang, T. E. Browder, N. B. Mistry, N. Horwitz, D. Besson, M. Kelly, J.S. Miller, H. Severini, S. Ball, Dave Britton, R. L. McIlwain, G. Eigen, M. S. Alam, V. Shelkov, P.C. Kim, Richard Wilson, N. Copty, Yuichi Kubota, J. Ernst, R. Poling, S. Schrenk, B. Nemati, P. Zadorozhny, F. Muheim, D. Cinabro, D. N. Brown, S. Playfer, W. R. Ross, C. Bebek, I. Volobouev, D. H. Miller, X. Fu, M. Saulnier, M. Sung, M. Lohner, S. E. Csorna, K. Kinoshita, S. Patton, J. Bartelt, D.L. Kreinick, M. Modesitt, D. L. Hartill, S. Salman, C. D. Jones, Michael Wood, M. Sapper, M. Garcia-Sciveres, R. Wang, M. Procario, D. M. Coffman, M. Athanas, R. Balest, Marina Artuso, and H. Tajima
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, symbols.namesake, Branching fraction, Electron–positron annihilation, symbols, Feynman diagram, B meson, Elementary particle, Branching (polymer chemistry)
Abstract: Using the CLEO II detector at CESR, we have measured the ratio of branching fractions B (D + S → φl + ν) B (D + S → φπ + ) = 0.54 ± 0.05 ± 0.04 . We use this measurement to obtain a model dependent estimate of B (D + S → φπ + ) .
Published: 1994

248. Study of the decay

Author: Juliet Ritchie Patterson, M. Modesitt, D. Payne, H. A. Cho, R. Wang, J. Gronberg, N. Horwitz, D. L. Hartill, R. Poling, C. R. Ng, G. Wei, Michael S. Witherell, D. M. Coffman, F. Butler, R. Malchow, T. Skwarnicki, John Yelton, M. Lambrecht, D. B. MacFarlane, A. J. Weinstein, B. K. Heltsley, M. S. Alam, D. He, J. G. Smith, P. M. Patel, M. Chadha, Jungil Lee, P. C. Kim, S. Henderson, Ha Lam, J. Ernst, G. Vasseur, T. E. Browder, H. N. Nelson, J. K. Nelson, D. Riley, E. R.F. Hyatt, D. H. Miller, C. Qiao, R. Mountain, N. Copty, Shengfeng Yang, T. K. Nelson, M. Lattery, D. Cinabro, D. Fujino, T. Liu, Y. Kwon, J. Bartelt, B. C. Barish, J. J. O'Neill, P. Zadorozhny, F. Muheim, C. Bebek, X. Fu, J. Masui, M. Sapper, D. Z. Besson, K. Lingel, S. Nakanishi, E. H. Thorndike, A. P. Freyberger, George R. Kalbfleisch, B. Nemati, F. Morrow, Yurii V. Mukhin, D. Acosta, D. F. Cowen, Yuichi Kubota, Anders Ryd, M. Athanas, P. Skubic, Daniel Johnson, M. Daoudi, D. Coppage, Maurice Garcia-Sciveres, Vivek Jain, M. L. Kelly, J. P. Alexander, M.A. Palmer, Richard Wilson, J. Snow, D. L. Kreinick, S. W. Gray, K. K. Gan, D. N. Brown, D. G. Cassel, P. N. Wang, Y. Skovpen, S. Sanghera, G. C. Moneti, K. Cho, R. Stephens, J. S. Miller, C. M. Daubenmier, S. Playfer, S. E. Csorna, I. P.J. Shipsey, M. Ogg, M. Procario, N. B. Mistry, K. Honscheid, R. Davis, George D Gollin, S. Roberts, G. Zhu, Ryszard Stroynowski, Alice Bean, M. Battle, B. I. Eisenstein, C. D. Jones, E. I. Shibata, H. P. Paar, R. Fulton, P. Rankin, M. Thulasidas, N. Hancock, K. Kinoshita, R. Kutschke, J. Mevissen, N. Kwak, S. Salman, J. Kandaswamy, Chunjie Wang, Michael Wood, H. Yamamoto, Marina Artuso, M. Goldberg, J. Urheim, S. Menary, E. Nordberg, Jeffrey Richman, Dave Britton, Jon J Thaler, R. L. McIlwain, Kenneth Bloom, D. Peterson, G. S. Ludwig, M. Sung, V. Shelkov, S. Schrenk, N. Katayama, D. S. Akerib, W. R. Ross, G. Eigen, I. Volobouev, H. Tajima, D. Perticone, Sheldon Stone, V. Savinov, Paul Avery, Daniel Schmidt, G. Crawford, C. R. Sun, W. T. Ford, H. Kagan, R. D. Kass, R. Balest, R. J. Morrison, Mats A Selen, A. J. Sadoff, Yoram Rozen, F. Würthwein, B. Geiser, M. Lohner, R. Kennett, B. Gittelman, I. J. Kim, Philip Baringer, P. S. Drell, Jorge Luis Rodriguez, M. Saulnier, S. Ball, R. Ehrlich, S. L. Jones, J. Dominick, D. Patton, Karl Berkelman, M. M. Zoeller, B. Ong, J. Fast, Christopher G. White, T. Miao, P. L. Wang, R. Ammar, H. Severini, S. Chan, K. W. Edwards, Z. Egyed, C. O'Grady, D. Sperka, T. Bergfeld, and G. Masek
Subjects: Nuclear physics, Physics, Semileptonic decay, Nuclear and High Energy Physics, Particle physics, Life span, Electron–positron annihilation, media_common.quotation_subject, Charm (quantum number), Asymmetry, Measure (mathematics), media_common
Abstract: Using the CLEO II detector at CESR we observe 500 Λ l + pairs consistent with the semileptonic decay Λc+ → λ+ν We measure σ(e + e − → Λ + c X) · B(Λ + c → Λ l + ν l ) = 4.77±0.25±0.66 pb . Combining with the charm semileptonic width and the lifetime of the Λc we also obtain B(Λ+c → pK−π+). We find no evidence for Λ l + ν l final states in which there are additional Λ+c decay products. We measure the decay asymmetry parameter of Λ+c → Λe+νe to be αΛc = −0.89+0.17+0.09−0.11−0.05.
Published: 1994

249. Analysis of hadronic transitions inϒ(3S)decays

Author: M. Procario, D. Fujino, J. J. O'Neill, T. Liu, C. Bebek, B. Nemati, Yurii V. Mukhin, A. P. Freyberger, A. J. Weinstein, Z. Egyed, F. Morrow, D. Besson, George R. Kalbfleisch, H. N. Nelson, S. Salman, Michael Wood, F. Butler, I. P.J. Shipsey, J. Urheim, M. Daoudi, J. Snow, D. Sperka, Ruifang Wang, R. Malchow, R. Ehrlich, J. Mevissen, K. Cho, N. B. Mistry, J. Kandaswamy, D. Cinabro, John Yelton, D. Peterson, H. Tajima, Sheldon Stone, S. L. Jones, J. Dominick, Paul Avery, S. Patton, K. K. Gan, T. Skwarnicki, D. F. Cowen, H. Kagan, K. Lingel, M. Sivertz, S. Nakanishi, E. H. Thorndike, Daniela Bortoletto, N. Copty, P. C. Kim, S. Henderson, M. Goldberg, W. R. Ross, D. Acosta, G. C. Moneti, Daniel Johnson, D. Perticone, M. Modesitt, V. Savinov, K. Sparks, P. L. Wang, H. Worden, D. Coppage, J. P. Alexander, Yoram Rozen, F. Würthwein, C. M. Daubenmier, Y. I. Skovpen, R. J. Morrison, Mats A Selen, Ryszard Stroynowski, M. Lambrecht, T. K. Nelson, Philip Baringer, Marina Artuso, D. M. Coffman, B. Ong, A. J. Sadoff, C. R. Sun, W. T. Ford, H. P. Paar, R. D. Kass, B. K. Heltsley, J. G. Smith, R. Fulton, S. Ball, R. Balest, D. He, P. Rankin, M. Sapper, D. L. Hartill, M. Chandha, T. E. Browder, J. S. Miller, M. Ogg, G. Zhu, J. Fast, D. Riley, R. S. Galik, R. Kutschke, Christopher G. White, D. L. Kreinick, Chunjie Wang, E. Nordberg, Daniel Schmidt, M. Thulasidas, R. Davis, S. F. Schaffner, J. Bartelt, G. S. Ludwig, S. Sanghera, P. Wilson, S. Roberts, R. Ammar, M. Battle, N. Hancock, M. L. Kelly, H. Yamamoto, Paul Sheldon, Yuichi Kubota, G. Crawford, H. Severini, S. Chan, S. W. Gray, P. Skubic, K. Honscheid, Richard Wilson, C. O'Grady, M. M. Zoeller, T. Miao, N. Katayama, D. S. Akerib, G. Eigen, J. Whitmore, Jungil Lee, M. Sung, D. H. Miller, X. Fu, R. Stephens, S. E. Csorna, K. Kinoshita, E. I. Shibata, N. Kwak, S. Menary, R. L. McIlwain, F. Shen, S. Schrenk, F. Muheim, D. N. Brown, S. Playfer, M. S. Alam, J. Ernst, M. Lattery, Pu Wang, Karl Berkelman, Anders Ryd, M. Athanas, J. Gronberg, N. Horwitz, G. Masek, Juliet Ritchie Patterson, A. Bean, J. K. Nelson, S. Yang, Hubert Kroha, H. A. Cho, Ha Lam, J. D. Richman, R. Poling, C. R. Ng, Michael S. Witherell, G. Vasseur, B. C. Barish, C. D. Jones, Maurice Garcia-Sciveres, J. Masui, D. G. Cassel, Vivek Jain, P. S. Drell, Jorge Luis Rodriguez, M. Saulnier, R. Kennett, B. Gittelman, I. J. Kim, B. Geiser, and M. Lohner
Subjects: Physics, Particle physics, Angular distribution, ComputingMilieux_THECOMPUTINGPROFESSION, Meson, Stereochemistry, Branching fraction, Hadron
Abstract: Using the CLEO II detector, we have measured the branching fractions for [Upsilon](3[ital S])[r arrow][pi][pi][Upsilon](1[ital S]), [Upsilon](3[ital S])[r arrow][pi][pi][Upsilon](2[ital S]), and the cascade [Upsilon](3[ital S])[r arrow][Upsilon](2[ital S])+[ital X], [Upsilon](2[ital S])[r arrow][pi][sup +][pi][sup [minus]][Upsilon](1[ital S]), analyzing the exclusive mode where the daughter [Upsilon] state decays to a [ital e][sup +][ital e[minus]] or [mu][sup +][mu][sup [minus]] pair, as well as the inclusive [pi][sup +][pi][sup [minus]] transitions where the final [Upsilon] state decays into hadrons. Properties of the [pi][pi] system are analyzed. Searches for the cascade decay [Upsilon](3[ital S])[r arrow][pi][sup +][pi][sup [minus]][ital h][sub [ital b]], [ital h][sub [ital b]][r arrow][gamma][eta][sub [ital b]] and [Upsilon](3[ital S])[r arrow][pi][sup 0][ital h][sub [ital b]] were also performed.
Published: 1994

250. Amplitude analyses of the decaysχc1→ηπ+π−andχc1→η′π+π−

Author: J. Libby, D. L. Hartill, Hans J. Vogel, Mats A Selen, A. J. Sadoff, J. Insler, L. K. Gibbons, J. Zhu, G. S. Adams, K. W. Edwards, John Yelton, J. Hietala, V. E. Kuznetsov, B. K. Heltsley, Jonathan L. Rosner, R. Mountain, Mark Smith, D. L. Kreinick, Amiran Tomaradze, Peter Onyisi, R. Ehrlich, Anders Ryd, T. Skwarnicki, C. S. Park, M. R. Shepherd, D. M. Asner, Adam P. Szczepaniak, P. Naik, D. Z. Besson, Ping Zhou, N. Lowrey, D. Cinabro, D. G. Cassel, J. Y. Ge, D. Riley, Ian Shipsey, James E Wiss, Sean A Dobbs, A. Powell, Marina Artuso, K. Randrianarivony, G. Wilkinson, M. Kornicer, Z. Metreveli, C. Thomas, Juliet Ritchie Patterson, Jonas Rademacker, Souvik Das, K. M. Ecklund, R. E. Mitchell, P. Rubin, G. Tatishvili, Werner Sun, Ting Xiao, Lei Zhang, S. W. Gray, H. Muramatsu, A. Lincoln, S. Blusk, R. A. Briere, S. Ricciardi, B. Xin, D. Cronin-Hennessy, J. Napolitano, D. H. Miller, S. Mehrabyan, L. J. Pearson, T. K. Pedlar, L. Martin, K. K. Seth, Sheldon Stone, E. H. Thorndike, G. Bonvicini, J. P. Alexander, D. Peterson, and Xin Shi
Subjects: Scattering amplitude, Physics, Nuclear and High Energy Physics, Particle physics, Amplitude, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Pi, Analytical chemistry, Dalitz plot, 010306 general physics, 01 natural sciences
Abstract: Using a data sample of 2.59 x 10^7 psi(2S) decays obtained with the CLEO-c detector, we perform amplitude analyses of the complementary decay chains chi_c1 -> eta pi+ pi- and chi_c1 -> eta' pi+ pi-. We find evidence for a P-wave eta' pi scattering amplitude, which, if interpreted as a resonance, would have exotic J^PC = 1^-+ and parameters consistent with the pi_1(1600) state reported in other production mechanisms. We also make the first observation of the decay a_0(980) -> eta' pi and measure the ratio of branching fractions B(a_0(980) -> eta' pi)/B(a_0(980) -> eta pi) = 0.064 +- 0.014 +- 0.014. The pi pi spectrum produced with a recoiling eta is compared to that with eta' recoil.
Published: 2011

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