Direkt zum Inhalt

Prelovsek, Sasa ; Collins, Sara ; Mohler, Daniel ; Padmanath, M. ; Piemonte, Stefano

Charmonium-like resonances with JPC = 0++, 2++ in coupled $$ \mathrm{D}\overline{\mathrm{D}} $$, $$ {\mathrm{D}}_{\mathrm{s}}{\overline{\mathrm{D}}}_{\mathrm{s}} $$ scattering on the lattice

Article

Prelovsek, Sasa, Collins, Sara, Mohler, Daniel, Padmanath, M. and Piemonte, Stefano (2021) Charmonium-like resonances with JPC = 0++, 2++ in coupled $$ \mathrm{D}\overline{\mathrm{D}} $$, $$ {\mathrm{D}}_{\mathrm{s}}{\overline{\mathrm{D}}}_{\mathrm{s}} $$ scattering on the lattice. Journal of High Energy Physics 2021 (6), pp. 1-40.


Abstract

We present the first lattice investigation of coupled-channel D (D) over bar and D-s(D) over bar (s) scattering in the J(PC) = 0(++) and 2(++) channels. The scattering matrix for partial waves l = 0, 2 and isospin zero is determined using multiple volumes and inertial frames via Luscher's formalism. Lattice QCD ensembles from the CLS consortium with m(pi) similar or equal to 280MeV, a similar or ...

We present the first lattice investigation of coupled-channel D (D) over bar and D-s(D) over bar (s) scattering in the J(PC) = 0(++) and 2(++) channels. The scattering matrix for partial waves l = 0, 2 and isospin zero is determined using multiple volumes and inertial frames via Luscher's formalism. Lattice QCD ensembles from the CLS consortium with m(pi) similar or equal to 280MeV, a similar or equal to 0.09 fm and L/a = 24, 32 are utilized. The resulting scattering matrix suggests the existence of three charmonium-like states with J(PC) = 0(++) in the energy region ranging from slightly below 2m(D) up to 4.13 GeV. We find a so far unobserved D (D) over bar bound state just below threshold and a D (D) over bar resonance likely related to chi(c0)(3860), which is believed to be chi(c0)(2P). In addition, there is an indication for a narrow 0(++) resonance just below the D-s(D) over bar (s) threshold with a large coupling to D-s(D) over bar (s) and a very small coupling to D (D) over bar. This resonance is possibly related to the narrow X(3915)/chi(c0)(3930) observed in experiment also just below D-s(D) over bar (s). The partial wave l = 2 features a resonance likely related to chi(c2)(3930). We work with several assumptions, such as the omission of J/psi omega, eta(c)eta and three-particle channels. Only statistical uncertainties are quantified, while the extrapolations to the physical quark-masses and the continuum limit are challenges for the future.



Involved Institutions


Details

Item typeArticle
Journal or Publication TitleJournal of High Energy Physics
PublisherSpringer
Open Access TypeSCOAP3
Place of PublicationNEW YORK
Volume2021
Number of Issue or Book Chapter6
Page Rangepp. 1-40
Date7 June 2021
Date of publication20 Feb 2022 15:13
InstitutionsPhysics > Institute of Theroretical Physics
Identification Number
ValueType
10.1007/JHEP06(2021)035DOI
KeywordsQUANTUM-FIELD THEORIES; PARTNERS; STATES; Lattice field theory simulation; QCD Phenomenology
Dewey Decimal Classification500 Science > 530 Physics
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-517495
Item ID51749

Export bibliographical data

Owner only: item control page

nach oben