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Title The X(3872), the X(4014), and their bottom partners at finite temperature
Authors Gloria Montana-Faiget, A. Ramos, Laura Tolos, Juan Torres-Rincon
JLAB number JLAB-THY-22-3763
LANL number arXiv:2211.01896
Other number DOE/OR/23177-5652
Document Type(s) (Journal Article) 
Associated with EIC: No
Supported by Jefferson Lab LDRD Funding: No
Funding Source: Nuclear Physics (NP)
Other Funding:CEX2019-000918-M

Compiled for Physical Review D
Volume 107
Page(s) 054014
Publication Abstract: The properties of the X(3872)X(3872) and its spin partner, the X(4014)X(4014), are studied both in vacuum and at finite temperature. Using an effective hadron theory based on the hidden-gauge Lagrangian, the X(3872)X(3872) is dynamically generated from the ss-wave rescattering of a pair of pseudoscalar and vector charm mesons. By incorporating the thermal spectral functions of open charm mesons, the calculation is extended to finite temperature. Similarly, the properties of the X(4014)X(4014) are obtained out of the scattering of charm vector mesons. By applying heavy-quark flavor symmetry, the properties of their bottom counterparts in the axial-vector and tensor channels are also predicted. All the dynamically generated states show a decreasing mass and acquire an increasing decay width with temperature, following the trend observed in their meson constituents. These results are relevant in relativistic heavy-ion collisions at high energies, in analyses of the collective medium formed after hadronization or in femtoscopic studies, and can be tested in lattice-QCD calculations exploring the melting of heavy mesons at finite temperature.
Experiment Numbers:
Document: pdf
Accepted Manuscript: PhysRevD.107.054014.pdf
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