Search for the rare decay of 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>ψ</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>3686</mml:mn><mml:mo stretchy="false">)</mml:mo><mml:mo stretchy="false">→</mml:mo><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">Λ</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup><mml:mover accent="true"><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mo stretc

Ablikim, M.; Ачасов, М. Н.; Ahmed, S.; Albrecht, M.; Alekseev, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, J. Z.; Bai, Y.; Bakina, O.; Ferroli, R. Baldini; Ban, Y.; Begzsuren, K.; Bennett, D. W.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bianchi, F.; Boger, E.; Boyko, I. R.; Briere, R. A.; Cai, H.; Cai, X.; Çakır, O.; Calcaterra, A.; Cao, G. F.; Çetin, S. A.; Chai, J.; Chang, J. F.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, P. L.; Chen, S. J.; Chen, X. R.; Chen, Y. B.; Chu, X. K.; Cibinetto, G.; Cossio, F.; Dai, H. L.; Dai, J. P.; Dbeyssi, A.; Dedovich, D.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; Mori, F. De; Ding, Y.; Dong, C.; Dong, J.; Dong, L. Y.; Dong, M. Y.; Dou, Z. L.; Du, S. X.; Duan, Pengfei; Fang, J.; Fang, S. S.; Fang, Y.; Farinelli, R.; Fava, L.; Fegan, S.; Feldbauer, F.; Felici, G.; Feng, C. Q.; Fioravanti, E.; Fritsch, M.; Fu, C. D.; Gao, Q.; Gao, X. L.; Gao, Y.; Gao, Z.; Garillon, B.; Garzia, I.; Gilman, A.; Goetzen, K.; Gong, L.; Gong, W. X.; Gradl, W.; Greco, M.; Gu, M. H.; Gu, Y. T.; Guo, A. Q.; Guo, R. P.; Guo, Y. P.; Guskov, A.; Haddadi, Z.; Han, S.; Hao, X. Q.; Harris, F. A.; He, K. L.; He, X. Q.; Heinsius, F. H.; Held, T.; Heng, Y. K.; Holtmann, T.; Hou, Z. L.; Hu, H. M.; Hu, J. F.; Hu, T.; Hu, Y.; Huang, G. S.; Huang, J. S.; Huang, X. T.; Huang, X. Z.; Huang, Z.; Hussain, T.; Andersson, W. Ikegami; Irshad, M.; Ji, Q.; Ji, Q. P.; Ji, X. B.; Ji, X. L.; Jiang, X. S.; Jiang, X. Y.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Jin, Y.; Johansson, T.; Julin, A.; Kalantar‐Nayestanaki, N.; Kang, X. S.; Kavatsyuk, M.; Ke, B. C.; Khan, Tabassum; Khoukaz, A.; Kiese, P.; Kliemt, R.; Koch, L.; Kolcu, O. B.; Kopf, B.; Kornicer, M.; Kuemmel, M.; Kuessner, M.; Kupść, A.; Kurth, M. G.; Kühn, W.; Lange, J. S.; Lara, M.; Larin, P.; Lavezzi, L.; Leithoff, H.; Li, C.; Li, Cheng; Li, D. M.; Li, F.; Li, F. Y.; Li, G.; Li, H. B.; Li, H. J.; Li, J. C.; Li, J. W.; Li, Jin; Li, K. J.; Li, Kang; Li, Ké; Li, Lei; Li, P. L.; Li, P. R.; Li, Q. Y.; Li, W. D.; Li, W. G.; Li, X. L.; Li, X. N.; Li, X. Q.; Li, Z. B.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, G. R.; Liao, L. Z.; Libby, J.; Lin, C. X.; Lin, D. X.; Liu, B.; Liu, B. J.; Liu, C. X.; Liu, D.; Liu, D. Y.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, H. B.; Liu, H. L.; Liu, H. M.; Liu, Huanhuan; Liu, Huihui; Liu, J. B.; Liu, J. Y.; Liu, K.; Liu, K. Y.; Liu, Ke; Liu, L. D.; Liu, Q.; Liu, S. B.; Liu, X.; Liu, Y. B.; Liu, Z. A.; Liu, Zhiqing; Long, Y. F.; Lou, X.; Lü, H. J.; Lu, J. G.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, X. L.; Lusso, S.; Lyu, X. R.; C., F.; L., H.; L., L.; M., M.; M., Q.; Ma, Tian; N., X.; Y., X.; M., Y.; Maas, F. E.; Maggiora, M.; Malik, Q. A.; Mangoni, A.; Mao, Y. J.; Mao, Z. P.; Marcello, S.; Meng, Z.; Messchendorp, J. G.; Mezzadri, G.; Min, J.; Mitchell, R. E.; Mo, X. H.; Mo, Y. J.; Morales, C. Morales; Muchnoi, N. Yu.; Muramatsu, H.; Mustafa, A.; Nefedov, Y.; Nerling, F.; Nikolaev, I. B.; Ning, Z.; Nisar, S.; Niu, S. L.; Niu, X. Y.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Pan, Y.; Papenbrock, M.; Patterí, P.; Pelizaeus, M.; Pellegrino, J.; Peng, H.; Peng, Z. Y.; Peters, K.; Pettersson, J.; Ping, J. L.; Ping, R. G.; Pitka, A.; Poling, R.; Prasad, V.; Qi, H. R.; Qi, M.; Qi, T. Y.; Qian, S.; Qiao, C. F.; Qin, N.; Qin, X. S.; Qin, Z. H.; Qiu, J. F.; Rashid, K. H.; Redmer, C. F.; Richter, Markus; Ripka, M.; Rolo, M.; Rong, G.; Rosner, Ch.; Sarantsev, A.; Savrié, M.; Schnier, C.; Schoenning, K.; Shan, W.; Shan, X. Y.; Shao, M.; Shen, C. P.; Shen, P. X.; Shen, X. Y.; Sheng, H. Y.; Shi, X.; Song, J. J.; Song, W. M.; Song, X. Y.; Sosio, S.; Sowa, C.; Spataro, S.; Sun, G. X.; Sun, J. F.; Sun, L.; Sun, S.; Sun, X. H.; Sun, Y. J.; Sun, Y.; Sun, Y. Z.; Sun, Z. J.; Sun, Z. T.; Tan, Y. T.; Tang, C. J.; Tang, G. Y.; Tang, X.; Tapan, I.; Tiemens, M.; Tsednee, B.; Uman, I.; Varner, G.; Wang, B.; Wang, B. L.; Wang, D.; Wang, D. Y.; Wang, Dan; Wang, K.; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, Meng; Wang, P.; Wang, P. L.; Wang, W. P.; Wang, X. F.; Wang, Y.; Wang, Y. F.; Wang, Y. Q.; Wang, Z.; Wang, Z. G.; Wang, Z. Y.; Wang, Zongyuan; Weber, T.; Wei, D. H.; Weidenkaff, P.; Wen, S. P.; Wiedner, U.; Wolke, M.; Wu, L. H.; Wu, L. J.; Wu, Z.; Xia, L.; Xia, Y.; Xiao, D.; Xiao, Y. J.; Xiao, Z. J.; Xie, Y.; Xie, Y.; Xiong, X. A.; Xiu, Q. L.; Xu, G. F.; Xu, Jingyi; Li, Xu; Xu, Q. J.; Xu, Q. N.; Xu, X. P.; Yan, F.; Yan, L.; Yan, W. B.; Yan, W. C.; Yan, Y. H.; Yang, H. J.; Yang, H. X.; Yang, L.; Yang, Yifan; Yang, Yifan; Ye, M.; Ye, M. H.; Yin, J. H.; Zhou, You; Yu, B. X.; Yu, C. X.; Yu, J. S.; Yuan, C. Z.; Yuan, Y.; Yuncu, A.; Zafar, A. A.; Zeng, Y.; Zeng, Z.; Zhang, B. X.; Zhang, B. Y.; Zhang, C. C.; Zhang, D. H.; Zhang, H. H.; Zhang, H. Y.; Zhang, J.; Zhang, J. L.; Zhang, J. Q.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, K.; Zhang, L.; Zhang, T. J.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. H.; Zhang, Y. T.; Zhang, Yang; Zhang, Yao; Zhang, Yu; Zhang, Z. H.; Zhang, Z. P.; Zhang, Z. Y.; Zhao, G.; Zhao, J. W.; Zhao, J. Y.; Zhao, J. Z.; Liu, Zhao; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, S. J.; Zhao, T. C.; Zhao, Y. B.; Zhao, Z.; Zhemchugov, A.; Zheng, B.; Zheng, J. P.; Zheng, Y.; Zhong, B.; Li, Zhou; Zhou, Q.; Zhou, Xiang; Zhou, X. R.; Zhou, X. Y.; Zhu, A. N.; Zhu, Jing; Zhu, K.; Zhu, S. H.; Zhu, Xiaoyu; Zhu, Y.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.

doi:10.1103/physrevd.97.091102

Cited by 17 publications

(28 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resulting η and η TFFs are in good agreement with experimental data in the singly-virtual [74][75][76][77] and doubly-virtual regions [78], as well as the fit results using Canterbury approximants [32]. Furthermore, there are some phenomenological constraints on the two-photon couplings for η(1295) [79,80], η(1405) [79][80][81], η(1475) [81,82], η(1760) [83], and X(1835) [81,83], where η(1475) and η(1760) are actually seen in γγ collisions, while for the others only limits are available. The detailed comparison depends on the assignment of these states into η and η trajectories, but the predictions of our model are compatible with either the assignment from [63,64] (our main choice) or the one from [84], see [62].…”

Section: Large-nc Regge Modelsupporting

confidence: 80%

Short-distance constraints on hadronic light-by-light scattering in the anomalous magnetic moment of the muon

et al. 2020

View full text Add to dashboard Cite

A key ingredient in the evaluation of hadronic light-by-light (HLbL) scattering in the anomalous magnetic moment of the muon (g − 2)µ concerns short-distance constraints (SDCs) that follow from QCD by means of the operator product expansion. Here we concentrate on the most important such constraint, in the longitudinal amplitudes, and show that it can be implemented efficiently in terms of a Regge sum over excited pseudoscalar states, constrained by phenomenological input on masses, two-photon couplings, as well as SDCs on HLbL scattering and the pseudoscalar transition form factors (TFFs). Our estimate of the effect of the longitudinal SDCs on the HLbL contribution is: ∆a LSDC µ = 13(6) × 10 −11 . This is significantly smaller than previous estimates, which mostly relied on an ad-hoc modification of the pseudoscalar poles and led to up to a 40% increase with respect to the nominal pseudoscalar-pole contributions, when evaluated with modern input for the relevant TFFs. We also comment on the status of the transversal SDCs and, by matching to perturbative QCD, argue that the corresponding correction will be significantly smaller than its longitudinal counterpart.

show abstract

Section: Large-nc Regge Modelsupporting

confidence: 80%

Short-distance constraints on hadronic light-by-light scattering in the anomalous magnetic moment of the muon

et al. 2020

View full text Add to dashboard Cite

show abstract

“…This is in particular the case of the combined chiral and 1/N C expansion [55,85,86]. Within this framework, our construction would apply to further processes, like η ′ → ηππ, which was recently studied in high-precision experiments [87][88][89].…”

Section: Discussionmentioning

confidence: 99%

Dispersive construction of two-loop P→πππ(P=K,η) amplitudes

et al. 2020

View full text Add to dashboard Cite

We present and develop a general dispersive framework allowing to construct representations of the amplitudes for the processes P π → ππ, P = K, η, valid at the two-loop level in the low-energy expansion. The construction proceeds through a two-step iteration, starting from the tree-level amplitudes and their S and P partial-wave projections. The one-loop amplitudes are obtained for all possible configurations of pion masses. The second iteration is presented in detail in the cases where either all masses of charged and neutral pions are equal, or for the decay into three neutral pions. Issues related to analyticity properties of the amplitudes and of their lowest partialwave projections are given particular attention. This study is introduced by a brief survey of the situation, for both experimental and theoretical aspects, of the decay modes into three pions of charged and neutral kaons and of the eta meson.

show abstract

“…The thin solid line results are those obtained with the approximation G E = G M , and will be discussed later. Naturally, all [11,12,17,19]. The thick solid line is based on Eqs.…”

Section: A Octet Baryonsmentioning

confidence: 99%

“…In the present study we focus on the reactions involving hyperons in the final states. Data associated with hyperon electromagnetic form factors in the timelike region became also available in facilities such as BaBar [17], BES-III [18,19] and CLEO [11,12]. The available data cover the high q 2 region where we can expect to probe perturbative QCD (pQCD) physics.…”

Section: Introductionmentioning

confidence: 99%

Hyperon electromagnetic timelike elastic form factors at large q2

2020

View full text Add to dashboard Cite

We present estimates of the hyperon elastic form factors for the baryon octet and the Ω − baryon for large four-momentum transfer squared, q 2 , in the timelike region (q 2 > 0). Experimentally, those form factors can be extracted from the e + e − → BB and pp → BB processes, where B stands for a general baryon. Our results are based on calculations for the elastic electromagnetic form factors in the spacelike region (Q 2 = −q 2 > 0) within a covariant quark model. To connect the results in the spacelike to those in the timelike region, we use asymptotic relations between the two regions which are constraints derived from analyticity and unitarity. We calculate the effective form factors |G(q 2 )|, and compare them with the integrated cross section data σBorn(q 2 ) from BaBar, BES III and CLEO. The available data are at the moment restricted to Λ, Σ 0 , Σ − , Ξ − , Ξ 0 , Ω − as well as to e + e − → ΛΣ 0 and e + e − → Σ 0Λ reactions. Our results provide useful reference for future experiments and seem to indicate that the present data are still in the non-perturbative QCD region, while the onset for the asymptotic constraints from analyticity and unitarity happens much before the region of the pQCD falloff of the form factors.

show abstract

Search for the rare decay of ψ(3686)→Λc+p

Cited by 17 publications

References 28 publications

Short-distance constraints on hadronic light-by-light scattering in the anomalous magnetic moment of the muon

Short-distance constraints on hadronic light-by-light scattering in the anomalous magnetic moment of the muon

Dispersive construction of two-loop P→πππ(P=K,η) amplitudes

Hyperon electromagnetic timelike elastic form factors at large q2

Contact Info

Product

Resources

About