Vector and scalar charmonium resonances with lattice QCD
Abstract
We perform an exploratory lattice QCD simulation of DD¯ scattering, aimed at determining the masses as well as the decay widths of charmonium resonances above open charm threshold. Neglecting coupling to other channels, the resulting phase shift for DD¯ scattering in p-wave yields the well-known vector resonance ψ(3770). For mπ = 156 MeV, the extracted resonance mass and the decay width agree with experiment within large statistical uncertainty. The scalar charmonium resonances present a puzzle, since only the ground state Χc0(1P) is well understood, while there is no commonly accepted candidate for its first excitation. We simulate DD¯ scattering in s-wave in order to shed light on this puzzle. The resulting phase shift supports the existence of a yet-unobserved narrow resonance with a mass slightly below 4 GeV. A scenario with this narrow resonance and a pole at Χc0(1P) agrees with the energy-dependence of our phase shift. In addition, further lattice QCD simulations and experimental efforts are needed to resolve the puzzle of the excited scalar charmonia.
- Authors:
-
- Univ. of Graz, Graz (Austria)
- Jozef Stefan Inst. (IJS), Ljubljana (Slovenia)
- Univ. of Ljubljana, Ljubljana (Slovenia)
- Jozef Stefan Inst. (IJS), Ljubljana (Slovenia); Univ. of Ljubljana, Ljubljana (Slovenia); Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1222707
- Alternate Identifier(s):
- OSTI ID: 1223213
- Report Number(s):
- JLAB-THY-15-2022; DOE/OR/23177-3322; arXiv:1503.05363; FERMILAB-PUB-15-084-T
Journal ID: ISSN 1029-8479; PII: 2091; TRN: US1500751
- Grant/Contract Number:
- AC02-07CG11359; AC05-06OR23177; AC02-07CH11359; AC02-76CHO03000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 9; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; decay width; charmonium; scattering; lattice QCD; heavy quark physics
Citation Formats
Lang, C. B., Leskovec, Luka, Mohler, Daniel, and Prelovsek, Sasa. Vector and scalar charmonium resonances with lattice QCD. United States: N. p., 2015.
Web. doi:10.1007/JHEP09(2015)089.
Lang, C. B., Leskovec, Luka, Mohler, Daniel, & Prelovsek, Sasa. Vector and scalar charmonium resonances with lattice QCD. United States. https://doi.org/10.1007/JHEP09(2015)089
Lang, C. B., Leskovec, Luka, Mohler, Daniel, and Prelovsek, Sasa. Tue .
"Vector and scalar charmonium resonances with lattice QCD". United States. https://doi.org/10.1007/JHEP09(2015)089. https://www.osti.gov/servlets/purl/1222707.
@article{osti_1222707,
title = {Vector and scalar charmonium resonances with lattice QCD},
author = {Lang, C. B. and Leskovec, Luka and Mohler, Daniel and Prelovsek, Sasa},
abstractNote = {We perform an exploratory lattice QCD simulation of DD¯ scattering, aimed at determining the masses as well as the decay widths of charmonium resonances above open charm threshold. Neglecting coupling to other channels, the resulting phase shift for DD¯ scattering in p-wave yields the well-known vector resonance ψ(3770). For mπ = 156 MeV, the extracted resonance mass and the decay width agree with experiment within large statistical uncertainty. The scalar charmonium resonances present a puzzle, since only the ground state Χc0(1P) is well understood, while there is no commonly accepted candidate for its first excitation. We simulate DD¯ scattering in s-wave in order to shed light on this puzzle. The resulting phase shift supports the existence of a yet-unobserved narrow resonance with a mass slightly below 4 GeV. A scenario with this narrow resonance and a pole at Χc0(1P) agrees with the energy-dependence of our phase shift. In addition, further lattice QCD simulations and experimental efforts are needed to resolve the puzzle of the excited scalar charmonia.},
doi = {10.1007/JHEP09(2015)089},
journal = {Journal of High Energy Physics (Online)},
number = 9,
volume = 2015,
place = {United States},
year = {Tue Sep 15 00:00:00 EDT 2015},
month = {Tue Sep 15 00:00:00 EDT 2015}
}
Web of Science
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