Evidence for e+e-&rarr;&gamma;&chi;c1,2 at center-of-mass energies from 4.009 to 4.360 GeV

M. Ablikim; M. N. Achasov; X. C. Ai; et al. (BESⅢ collaboration)</font>

doi:10.1088/1674-1137/39/4/041001

Chinese Physics C> 2015, Vol. 39> Issue(4) : 041001 DOI: 10.1088/1674-1137/39/4/041001

Evidence for e⁺e^-→γχ_c1,2 at center-of-mass energies from 4.009 to 4.360 GeV

Abstract
HTML
Reference
Related

PDF

Abstract：
Using data samples collected at center-of-mass energies of √s=4.009, 4.230, 4.260, and 4.360 GeV with the BES0 detector operating at the BEPC/ collider, we perform a search for the process e⁺e^-→γχ_c,j (J =0, 1, 2) and find evidence for e⁺e^-→γχ_c1 and e⁺e^-→γχ_c2 with statistical significances of 3.0σ and 3.4σ, respectively. The Born cross sections σ^B(e⁺e^-→γχ_c,j), as well as their upper limits at the 90% con dence level (C.L.) are determined at each center-of-mass energy.

References

[1]

Aubert B et al. (BABAR collaboration). Phys. Rev. Lett., 2005, 95: 142001[2] HE Q et al. (CLEO collaboration). Phys. Rev. D, 2006, 74: 091104(R)[3] YUAN C Z et al. (Belle collaboration). Phys. Rev. Lett., 2007, 99: 182004[4] Lees J P et al. (BABAR collaboration). Phys. Rev. D, 2012, 86: 051102[5] LIU Z Q et al. (Belle collaboration). Phys. Rev. Lett., 2013, 110: 252002[6] Eichten E, Gottfried K, Kinoshita T, Lane K, YAN T. Phys. Rev. D, 1978, 17: 3090; 1980, 21: 203; Barnes T, Godfrey S, Swanson E S. Phys. Rev. D, 2005, 72: 054026[7] LIU L et al. (Hadron Spectrum collaboration). JHEP, 2012, 1207: 126[8] Ebert D, Faustov R N, Galkin V O. Phys. Lett. B, 2006, 634: 214[9] Maiani L, Riquer V, Piccinini F, Polosa A D. Phys. Rev. D, 2005, 72: 031502(R)[10] LIU X, ZENG X Q, LI X Q. Phys. Rev. D, 2005, 72: 054023(R)[11] YUAN C Z, WANG P, MO X H. Phys. Lett. B, 2006, 634: 399[12] WANG X L et al. (Belle collaboration). Phys. Rev. D, 2013, 87: 051101(R)[13] Coan T E et al. (CLEO collaboration). Phys. Rev. Lett., 2006, 96: 162003[14] Ablikim M et al. (BESⅢ collaboration). Phys. Rev. Lett., 2014, 112: 092001[15] MA L, SUN Z F, LIU X H, DENG W Z, LIU X, ZHU S L. Phys. Rev. D, 2014, 90: 034020[16] CHAO K T, HE Z G, LI D, MENG C. hep-ex/arXiv:1310.8597[17] Ablikim M et al. (BESⅢ collaboration). Nucl. Instrum. Methods A, 2010, 614: 345[18] Agostinelli S et al. (GEANT4 collaboration). Nucl. Instrum. Methods A, 2003, 506: 250[19] Lange D J. Nucl. Instrum. Methods A, 2001, 462: 152; PING R G. HEP NP, 2008, 32: 599602[20] Jadach S, Ward B F L, Was Z. Comput. Phys. Commum., 2000, 130: 260; Jadach S, Ward B F L, Was Z. Phys. Rev. D, 2001, 63: 113009[21] Olive K A et al. (Particle Data Group). Chin. Phys. C, 2014, 38: 090001[22] Beringer J et al. (Particle Data Group). Phys. Rev. D, 2012, 86: 010001[23] PING R G. Chinese Phys. C, 2008, 32: 599[24] Sjostrand T, Lonnblad L, Mrenna S. hep-ph/0108264[25] Kuraev E A, Fadin V S. Sov. J. Nucl. Phys., 1985, 41: 466 [Yad. Fiz. 1985, 41: 733][26] Actis S et al. Eur. Phys. J. C, 2010, 66: 585[27] Ablikim M et al. (BESⅢ collaboration). Phys. Rev. D, 2012, 86: 071101

[1]	M. Ablikim , et al . Measurement of e⁺e^-→DD cross sections at the ψ(3770) resonance. Chinese Physics C, 2018, 42(8): 083001. doi: 10.1088/1674-1137/42/8/083001
[2]	J. M. Dias , V. R. Debastiani , Ju-Jun Xie , E. Oset . The radiative decay D⁰→ K^*0γ with vector meson dominance. Chinese Physics C, 2018, 42(4): 043106. doi: 10.1088/1674-1137/42/4/043106
[3]	M. Ablikim , et al . Measurement of integrated luminosity and center-of-mass energy of data taken by BESⅢ at s=2.125 GeV. Chinese Physics C, 2017, 41(11): 113001. doi: 10.1088/1674-1137/41/11/113001
[4]	N. N. Achasov , Xian-Wei Kang . On the nature of χ_c2(2P) two-gluon decay. Chinese Physics C, 2017, 41(12): 123102. doi: 10.1088/1674-1137/41/12/123102
[5]	Xun-Xiu Zhou , Lan-Lan Gao , Yu Zhang , Yi-Qing Guo , Qing-Qi Zhu , Huan-Yu Jia , Dai-Hui Huang . Sensitivity study of (10,100) GeV gamma-ray bursts with double shower front events from ARGO-YBJ. Chinese Physics C, 2016, 40(7): 075001. doi: 10.1088/1674-1137/40/7/075001
[6]	Yin Huang , Ju-Jun Xie , Jun He , Xurong Chen , Hong-Fei Zhang . Photoproduction of hidden-charm states in the γp→D^*0Λ_c⁺ reaction near threshold. Chinese Physics C, 2016, 40(12): 124104. doi: 10.1088/1674-1137/40/12/124104
[7]	Wenyu Wang , Zhao-Hua Xiong , Xin-Yan Zhao . General scan in flavor parameter space in models with vector quark doublets and an enhancement in the B→X_sγ process. Chinese Physics C, 2016, 40(9): 093102. doi: 10.1088/1674-1137/40/9/093102
[8]	M. Ablikim , M. N. Achasov , X. C. Ai , O. Albayrak , M. Albrecht , D. J. Ambrose . Measurements of the center-of-mass energies at BESIII via the di-muon process. Chinese Physics C, 2016, 40(6): 063001. doi: 10.1088/1674-1137/40/6/063001
[9]	Guang-Wei Fan , Jun-Bing Ma , Zong-Qiang Sheng , Guo-Zhu Shi , Feng Tian , Jun Wang , Chao Zhang . Capture cross sections of ¹⁵N(n, γ)¹⁶N at astrophysical energies. Chinese Physics C, 2016, 40(12): 124101. doi: 10.1088/1674-1137/40/12/124101
[10]	Qing-Ping Ji , Yu-Ping Guo , Ai-Qiang Guo , Chun-Xu Yu , Zhi-Yong Wang . Experimental review of e⁺e^-→ππh_c. Chinese Physics C, 2016, 40(1): 012001. doi: 10.1088/1674-1137/40/1/012001
[11]	Qin Qin , Zhi-Tian Zou , Ying Li , Cai-Dian Lü . Constraining the UT angle γ by CP violation parameters in B⁰→π⁺π^-*. Chinese Physics C, 2016, 40(3): 031001. doi: 10.1088/1674-1137/40/3/031001
[12]	Zhi-Jin Jiang , Yan Huang , Jie Wang . A combined model for pseudorapidity distributions in p-pcollisions at center-of-mass energies from 23.6 to 7000 GeV. Chinese Physics C, 2016, 40(7): 074104. doi: 10.1088/1674-1137/40/7/074104
[13]	Guang-Zhi Xu , Gang Li , Yi-Jie Li , Kui-Yong Liu , Yu-Jie Zhang . Interference effects on Higgs mass measurement in e⁺e^-→H(γγ)Z at CEPC. Chinese Physics C, 2016, 40(3): 033101. doi: 10.1088/1674-1137/40/3/033101
[14]	JIANG Zhi-Jin , ZHANG Hai-Li , MA Ke , WANG Jie . A description of pseudorapidity distributions in p-p collisions at center-of-mass energy from 23.6 to 900 GeV. Chinese Physics C, 2015, 39(4): 044102. doi: 10.1088/1674-1137/39/4/044102
[15]	TAO Jun-Quan , ZHANG Si-Jing , SHEN Yu-Qiao , FAN Jia-Wei , CHEN Guo-Ming , CHEN He-Sheng . Production of γγ+2 jets from double parton scattering in proton-proton collisions at the LHC. Chinese Physics C, 2015, 39(12): 121001. doi: 10.1088/1674-1137/39/12/121001
[16]	M. Ablikim , M. N. Achasov , X. C. Ai , et al. (BESⅢ Collaboration) . Precision measurement of the integrated luminosity of the data taken by BESIII at center-of-mass energies between 3.810 GeV and 4.600 GeV. Chinese Physics C, 2015, 39(9): 093001. doi: 10.1088/1674-1137/39/9/093001
[17]	CAO Qing-Hong , WANG Hao-Ran , ZHANG Ya . Probing HZγ and Hγγ anomalous couplings in the process e⁺e^-→Hγ. Chinese Physics C, 2015, 39(11): 113102. doi: 10.1088/1674-1137/39/11/113102
[18]	WANG Wen-Yu , XIONG Zhao-Hua , ZHOU Si-Hong . Can contributions to B_s→l⁺l^-γ from the magnetic-penguin operator with real photons in the standard model be neglected?. Chinese Physics C, 2014, 38(6): 063103. doi: 10.1088/1674-1137/38/6/063103
[19]	YUAN Chang-Zheng . Evidence for resonant structures in e⁺e^-→π⁺π^-h_c. Chinese Physics C, 2014, 38(4): 043001. doi: 10.1088/1674-1137/38/4/043001
[20]	Zhang Tianbao , Wang Shuying , Wang Haidong , Shen Zhiqi , Meng Bonian . Precise Measurement of Gamma Ray Energies with HPGe Spectrometer by Slithering Comparison Method. Chinese Physics C, 1993, 17(S1): 25-31.

Access

Get Citation

M. Ablikim, M. N. Achasov, X. C. Ai and et al. (BESⅢ collaboration). Evidence for e⁺e^-→γχ_c1,2 at center-of-mass energies from 4.009 to 4.360 GeV[J]. Chinese Physics C, 2015, 39(4): 041001. doi: 10.1088/1674-1137/39/4/041001

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2014-10-25
Revised: 1900-01-01

Article Metric

Article Views(1841)
PDF Downloads(261)
Cited by(0)

Policy on re-use

To reuse of Open Access content published by CPC, for content published under the terms of the Creative Commons Attribution 3.0 license (“CC CY”), the users don’t need to request permission to copy, distribute and display the final published version of the article and to create derivative works, subject to appropriate attribution.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Evidence for e⁺e^-→γχ_c1,2 at center-of-mass energies from 4.009 to 4.360 GeV

Received Date: 2014-10-25

Accepted Date: 1900-01-01

Available Online: 2015-04-05

Abstract: Using data samples collected at center-of-mass energies of √s=4.009, 4.230, 4.260, and 4.360 GeV with the BES0 detector operating at the BEPC/ collider, we perform a search for the process e⁺e^-→γχ_c,j (J =0, 1, 2) and find evidence for e⁺e^-→γχ_c1 and e⁺e^-→γχ_c2 with statistical significances of 3.0σ and 3.4σ, respectively. The Born cross sections σ^B(e⁺e^-→γχ_c,j), as well as their upper limits at the 90% con dence level (C.L.) are determined at each center-of-mass energy.

HTML

Reference (1)

Evidence for e⁺e^-→γχ_c1,2 at center-of-mass energies from 4.009 to 4.360 GeV

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Evidence for e⁺e^-→γχ_c1,2 at center-of-mass energies from 4.009 to 4.360 GeV

HTML

目录