SCOAP3 Repository 4 records found  Search took 0.02 seconds. 
1. New insights on low energy πN scattering amplitudes: comprehensive analyses at level Supported in part by National Nature Science Foundations of China (NSFC)(10925522, 11021092), and by the Spanish Ministerio de Economía y Competitividad (MINECO) and the European Regional Development Fund (ERDF)(FIS2017-84038-C2-1-P, FIS2017-84038-C2-2-P, SEV-2014-0398) / Wang, Yu-Fei ; Yao, De-Liang ; Zheng, Han-Qing
A production representation of partial-wave S matrix is utilized to construct low-energy elastic pion-nucleon scattering amplitudes from cuts and poles on complex Riemann sheets [...]
Published in Chinese Phys. C 43 (2019) 064110 10.1088/1674-1137/43/6/064110 arXiv:1811.09748
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2. New insights on low energy πN scattering amplitudes / Wang, Yu-Fei ; Yao, De-Liang ; Zheng, Han-Qing
The S - and P - wave phase shifts of low-energy pion-nucleon scatterings are analysed using Peking University representation, in which they are decomposed into various terms contributing either from poles or branch cuts. [...]
Published in EPJC 78 (2018) 543 10.1140/epjc/s10052-018-6024-5
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3. The Zc(3900) peak does not come from the “triangle singularity” / Gong, Qin-Rong ; Pang, Jing-Long ; Wang, Yu-Fei ; Zheng, Han-Qing
We compare contributions from the triangle diagram and the DD¯∗ bubble chain with the processes of e+e-→J/ψπ+π- and e+e-→(DD¯∗)∓π± . [...]
Published in EPJC 78 (2018) 276 10.1140/epjc/s10052-018-5690-7
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4. Positivity constraints on the low-energy constants of the chiral pion–nucleon Lagrangian / Sanz-Cillero, Juan José ; Yao, De-Liang ; Zheng, Han-Qing
Positivity constraints on the pion–nucleon scattering amplitude are derived in this article with the help of general S-matrix arguments, such as analyticity, crossing symmetry, and unitarity, in the upper part of the Mandelstam triangle, R . [...]
Published in EPJC 74 (2014) 2763 10.1140/epjc/s10052-014-2763-0
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See also: similar author names
5 Zheng, H.
28 Zheng, H.Q.
2 Zheng, Hao
1 Zheng, Hua
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