Charm and beauty in the deconfined plasma from quenched lattice QCD - INSPIRE

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Charm and beauty in the deconfined plasma from quenched lattice QCD

Heng-Tong Ding
(
- CCNU, Wuhan, Inst. Part. Phys.
)
,
Olaf Kaczmarek
(
- CCNU, Wuhan, Inst. Part. Phys. and
- Bielefeld U.
)
,
Anna-Lena Lorenz
(
- Bielefeld U.
)
,
Hiroshi Ohno
(
- Tsukuba U., CCS
)
,
Hauke Sandmeyer
(
- Bielefeld U.
)

Aug 31, 2021

Published in:

Phys.Rev.D 104 (2021) 11, 114508

Published: Dec 1, 2021

e-Print:

2108.13693 [hep-lat]

DOI:

10.1103/PhysRevD.104.114508 (publication)

View in:

ADS Abstract Service

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Abstract: (APS)

We present continuum extrapolated results of charmonium and bottomonium correlators in the vector channel at several temperatures below and above

T_{c}

. The continuum extrapolation jointly performed with the interpolations to have physical values of

J / ψ

and

ϒ

masses in the confined phase is based on calculations on several large quenched isotropic lattices using clover-improved Wilson valence fermions carrying different quark masses. The extrapolated lattice correlators are confronted with perturbation theory results incorporating resummed thermal effects around the threshold from potential nonrelativistic QCD (pNRQCD) and vacuum asymptotics above the threshold. An additional transport peak is modeled below the threshold allowing for an estimate of the diffusion coefficients for charm and bottom quarks. We find that charmonium correlators in the vector channel can be well reproduced by perturbative spectral functions above

T_{c}

where no resonance peaks for

J / ψ

are needed at and above

1.1 T_{c}

, while for bottomonium correlators a resonance peak for

ϒ

is still needed up to

1.5 T_{c}

. By analyzing the transport contribution to the correlators we find that the drag coefficient of a charm quark is larger than that of a bottom quark.

Note:

published version

plasma: deconfinement
fermion: valence
quark: mass
effect: thermal
correlation function
charm
lattice
charmonium
bottomonium
quenching

References(70)

Figures(23)

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