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)

Abstract

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.

Authors:

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

Publication Date:: Fri Sep 01 00:00:00 EDT 2017

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

Sponsoring Org.:: USDOE

OSTI Identifier:: 1365418

Alternate Identifier(s):: OSTI ID: 1391844

Report Number(s):: JLAB-THY-16-2410; DOE/OR/23177-4037; arXiv:1612.06490
Journal ID: ISSN 0370-2693; S0370269317305063; PII: S0370269317305063

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

Resource Type:: Published Article

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Name: Physics Letters B Journal Volume: 772 Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Pilloni, A., Fernández-Ramírez, C., Jackura, A., Mathieu, V., Mikhasenko, M., Nys, J., and Szczepaniak, A. P. Amplitude analysis and the nature of the Z(3900).  Netherlands: N. p., 2017. 
Web.  doi:10.1016/j.physletb.2017.06.030.

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                    Pilloni, A., Fernández-Ramírez, C., Jackura, A., Mathieu, V., Mikhasenko, M., Nys, J., & Szczepaniak, A. P. Amplitude analysis and the nature of the Z(3900).  Netherlands.  https://doi.org/10.1016/j.physletb.2017.06.030

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                    Pilloni, A., Fernández-Ramírez, C., Jackura, A., Mathieu, V., Mikhasenko, M., Nys, J., and Szczepaniak, A. P. Fri .  
"Amplitude analysis and the nature of the Z(3900)".  Netherlands.  https://doi.org/10.1016/j.physletb.2017.06.030.

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@article{osti_1365418,

  title        = {Amplitude analysis and the nature of the Z(3900)},

  author       = {Pilloni, A. and Fernández-Ramírez, C. and Jackura, A. and Mathieu, V. and Mikhasenko, M. and Nys, J. and Szczepaniak, A. P.},

  abstractNote = {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 Zc(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.},

  doi          = {10.1016/j.physletb.2017.06.030},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 772,

  place        = {Netherlands},

  year         = {Fri Sep 01 00:00:00 EDT 2017},

  month        = {Fri Sep 01 00:00:00 EDT 2017}

}

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

Abstract

Citation Formats

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Khuri–Treiman equations for $$\pi \pi $$ π π scattering journal, July 2018

Nonstandard heavy mesons and baryons: Experimental evidence journal, February 2018

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Pole position of the a 1 ( 1260 ) from τ -decay journal, November 2018

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Abnormal isospin violation and $a_{0} - f_{0}$ mixing in the $D_{s}^{+} \to π^{+} π^{0} a_{0} (980) (f_{0} (980))$ reactions
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Pole position of the $a_{1} (1260)$ from $τ$ -decay
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journal, April 2019

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journal, January 2018

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