Study of e(+)e(-) -> p(p)over-bar in the vicinity of psi(3770)

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成果类型：

期刊论文

作者：

Ablikim, M.;Achasov, M. N.;Ai, X. C.;Albayrak, O.;Albrecht, M.;...

通讯作者：

Liang, Y. T.

作者机构：

[Mao, Z. P.; Lu, J. G.; Liu, Zhiqiang; Chen, Y. B.; He, M.; Hu, T.; Liu, J.; Liu, Fang; Ning, Z.; Dong, J.; Guan, Y. H.; Li, C. H.; Min, J.; Chen, M. L.; Ai, X. C.; Ma, T.; Lu, H. L.; Heng, Y. K.; Ji, Q.; Hou, Z. L.; Rong, G.; Li, Lei; Liu, B. J.; Min, T. J.; Liu, H. M.; Li, Q. J.; Ma, H. L.; Jin, D. P.; Lu, Y.; Ouyang, Q.; Ma, S.; Chen, H. S.; Ji, X. B.; Qian, S.; Deng, Z. Y.; Ma, Q. M.; Dong, M. Y.; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Cai, X.; Lv, M.; An, F. F.; Fu, C. D.; Lou, X. C.; Jiang, L. L.; Lai, W.; Li, W. G.; Niu, X. Y.; Cao, G. F.; Mo, X. H.; Fang, J.; Gao, Q.; Huang, L.; Li, X. N.; Jiang, X. S.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Dai, J. P.; Chu, Y. P.; Fang, Y.; Luo, X. L.; Kang, X. L.; Ji, X. L.; Li, H. B.; Li, J. C.; Li, F.; Jin, S.; Chen, X.; Qin, Z. H.; Li, G.; He, K. L.; Chen, G.; Ping, R. G.; Qiu, J. F.; Chen, J. C.; Ablikim, M.; Han, Y. L.; Liu, C. X.; Qin, X. S.; Dai, H. L.; Li, W. D.; Bai, J. Z.] Inst High Energy Phys, Beijing 100049, Peoples R China.

[Shen, C. P.] Beihang Univ, Beijing 100191, Peoples R China.

[Albrecht, M.; Leyhe, M.; Pelizaeus, M.; Kopf, B.; Held, T.] Ruhr Univ Bochum, D-44780 Bochum, Germany.

[Briere, R. A.; Liu, C. L.; Albayrak, O.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.

[Mao, Y. J.; Liu, Feng; Huang, G. M.] Cent China Normal Univ, Wuhan 430079, Peoples R China.

通讯机构：

[Liang, Y. T.] U

Univ Giessen, D-35392 Giessen, Germany.

语种：

英文

关键词：

BESIII;Charmonium decay;Proton form factor

期刊：

Physics Letters B

ISSN：

0370-2693

年：

2014

卷：

735

页码：

101-107

DOI：

10.1016/j.physletb.2014.06.013

基金类别：

Ministry of Science and Technology of ChinaMinistry of Science and Technology, China [2009CB825200]; Joint Funds of the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11079008, 11179007, U1332201]; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC) [10625524, 10821063, 10825524, 10835001, 10935007, 11125525, 11235011]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility ProgramChinese Academy of Sciences; CASChinese Academy of Sciences [KJCX2-YW-N29, KJCX2-YW-N45]; 100 Talents Program of CASChinese Academy of Sciences; German Research Foundation DFGGerman Research Foundation (DFG) [Collaborative Research Center CRC-1044]; Istituto Nazionale di Fisica Nucleare, ItalyIstituto Nazionale di Fisica Nucleare (INFN); Ministry of Development of TurkeyTurkiye Cumhuriyeti Kalkinma Bakanligi [DPT2006K-120470]; U.S. Department of EnergyUnited States Department of Energy (DOE) [DE-FG02-04ER41291, DE-FG02-05ER41374, DE-FG02-94ER40823, DESC0010118]; U.S. National Science FoundationNational Science Foundation (NSF); University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0]

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摘要：

Using 2917 pb(-1) of data accumulated at 3.773 GeV, 44.5 pb(-1) of data accumulated at 3.65 GeV and data accumulated during a psi(3770) line-shape scan with the BESIII detector, the reaction e(+)e(-) -> p (p) over bar is studied considering a possible interference between resonant and continuum amplitudes. The cross section of e(+)e(-) -> psi(3770) -> p (p) over bar, sigma(e(+)e(-)-> psi(3770) -> p (p) over bar), is found to have two solutions, determined to be (0.059(-0.020)(+0.070) +/- 0.012) pb with the phase angle phi = (255.8(-26.6)(+39.0) +/- 4.8). (< 0.166 pb at the 90% confidence level...

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