Amplitude analysis and the nature of the Z(3900)

Pilloni, A.; Fernández-Ramírez, C.; Jackura, A.; Mathieu, V.; Mikhasenko, M.; Nys, J.; Szczepaniak, A. P.

doi:10.1016/j.physletb.2017.06.030

Title: Amplitude analysis and the nature of the Z(3900)

Journal Article · Fri Sep 01 00:00:00 EDT 2017 · Physics Letters B

DOI:https://doi.org/10.1016/j.physletb.2017.06.030· OSTI ID:1365418

; Fernández-Ramírez, C.; Jackura, A.; Mathieu, V.; Mikhasenko, M.; Nys, J.; Szczepaniak, A. P.

The microscopic nature of the XYZ states remains an unsettled topic. We show how a thorough amplitude analysis of the data can help constraining models of these states. Specifically, we consider the case of the Z_c(3900) peak and discuss possible scenarios of a QCD state, virtual state, or a kinematical enhancement. Here, we conclude that current data are not precise enough to distinguish between these hypotheses, however, the method we propose, when applied to the forthcoming high-statistics measurements should shed light on the nature of these exotic enhancements.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG0287ER40365; AC05-06OR23177; FG02-87ER40365; PHY-1415459; PHY-1205019; IA101717; 251817

OSTI ID:: 1365418

Alternate ID(s):: OSTI ID: 1391844

Report Number(s):: JLAB-THY-16-2410; DOE/OR/23177-4037; arXiv:1612.06490; S0370269317305063; PII: S0370269317305063

Journal Information:: Physics Letters B, Journal Name: Physics Letters B Vol. 772 Journal Issue: C; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: Netherlands

Language:: English

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Cited by: 49 works

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$$Z_c(3900)/Z_c(3885)$$ Z c ( 3900 ) / Z c ( 3885 ) as a virtual state from $$\pi J/\psi -\bar{D}^*D$$ π J / ψ - D ¯ ∗ D interaction He, Jun; Chen, Dian-Yong The European Physical Journal C, Vol. 78, Issue 2 https://doi.org/10.1140/epjc/s10052-018-5580-z	journal	February 2018
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