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The temperature dependence of bottomonium states at temperatures above and below $T_c$ is presented, using non-relativistic dynamics for the bottom quark and full relativistic lattice QCD simulations for two light flavors on a highly…

High Energy Physics - Phenomenology · Physics 2011-09-13 Gert Aarts , Chris Allton , Seyong Kim , Maria Paola Lombardo , Mehmet B. Oktay , Sinead M. Ryan , D. K. Sinclair , Jon-Ivar Skullerud

We study the temperature dependence of bottomonium for temperatures in the range 0.4 Tc < T < 2.1 Tc, using non-relativistic dynamics for the bottom quark and full relativistic lattice QCD simulations for Nf=2 light flavors. We consider the…

High Energy Physics - Lattice · Physics 2015-06-12 G. Aarts , C. Allton , A. Kelly , J. -I. Skullerud , S. Kim , T. Harris , S. M. Ryan , M. P. Lombardo , M. B. Oktay , D. K. Sinclair

The temperature dependence of bottomonium correlators up to the 3S and 3P excited states are presented in the range $T \simeq 133-250$ MeV. These lattice calculations employ the non-relativistic QCD (NRQCD) approach for bottom quarks on…

High Energy Physics - Lattice · Physics 2025-01-23 Heng-Tong Ding , Wei-Ping Huang , Rasmus Larsen , Stefan Meinel , Swagato Mukherjee , Peter Petreczky

We investigate the properties of S-and P-wave bottomonium states in the vicinity of the deconfinement transition temperature. The light degrees of freedom are represented by dynamical lattice QCD configurations of the HotQCD collaboration…

High Energy Physics - Lattice · Physics 2015-07-28 Seyong Kim , Peter Petreczky , Alexander Rothkopf

We calculate the temperature dependence of bottomonium correlators in (2+1)-flavor lattice QCD with the aim to constrain in-medium properties of bottomonia at high temperature. The lattice calculations are performed using HISQ action with…

High Energy Physics - Lattice · Physics 2025-05-21 H. -T. Ding , W. -P. Huang , R. Larsen , S. Meinel , Swagato Mukherjee , P. Petreczky , Zhanduo Tang

We present lattice non-relativistic QCD calculations of bottomonium correlation functions at temperatures $T \simeq 150-350$ MeV. The correlation functions were computed using extended bottomonium operators, and on background gauge-field…

High Energy Physics - Lattice · Physics 2020-06-01 Rasmus Larsen , Stefan Meinel , Swagato Mukherjee , Peter Petreczky

We present results on the bottomonium spectrum at temperatures above and below the deconfinement crossover temperature, $T_c$, from dynamical lattice QCD simulations. The heavy quark is treated with a non-relativistic effective field theory…

High Energy Physics - Lattice · Physics 2015-06-18 Gert Aarts , Chris Allton , Tim Harris , Seyong Kim , Maria Paola Lombardo , Sinéad M. Ryan , Jon-Ivar Skullerud

We present the first lattice QCD study of up to $3S$ and $2P$ bottomonia at non-zero temperatures. Correlation functions of bottomonia were computed using novel bottomonium operators and a variational technique, within the lattice…

High Energy Physics - Lattice · Physics 2020-06-01 Rasmus Larsen , Stefan Meinel , Swagato Mukherjee , Peter Petreczky

The behavior of bottomonium state correlators at non-zero temperature, $140.4 (\beta = 6.664) \le T \le 221 (\beta = 7.280)$ (MeV), where the transition temperature is $154(9)$ (MeV), is studied, using lattice NRQCD on $48^3 \times 12$…

High Energy Physics - Lattice · Physics 2013-10-25 Seyong Kim , Peter Petreczky , Alexander Rothkopf

We study the bottomonium screening masses in a 2+1 flavor QCD medium on the lattice using the Highly Improved Staggered Quark(HISQ) discretization for the quarks. We focus on a wide temperature range in the region $350~{\rm MeV}\le T < 1000…

High Energy Physics - Lattice · Physics 2021-10-15 Peter Petreczky , Sayantan Sharma , Johannes Heinrich Weber

A well-known challenge for the lattice community is calculating the spectral function from the Euclidean correlator. We have approximated the spectral function and derived the mass and thermal width of particles through the time derivatives…

We fit the lattice QCD data of Kaczmarek et al for the free energy F1 and internal energy U1 with a class of Coulomb, constant and linear potentials, both pure and screened, matching the large distance to the short distance parts of the…

High Energy Physics - Phenomenology · Physics 2009-06-16 Pedro Bicudo , Joao Seixas , Marco Cardoso

We estimate bottomonium yields in relativistic heavy-ion collisions using a lattice QCD vetted, complex-valued, heavy-quark potential embedded in a realistic, hydrodynamically evolving medium background. We find that the lattice-vetted…

High Energy Physics - Phenomenology · Physics 2018-01-31 Brandon Krouppa , Alexander Rothkopf , Michael Strickland

We study bottomonium spectral functions in the quark-gluon plasma in the Upsilon and eta_b channels, using lattice QCD simulations with two flavours of light quark on highly anisotropic lattices. The bottom quark is treated with…

The bottomonium spectral functions at finite temperature are analyzed by employing QCD sum rules with the maximum entropy method. This approach enables us to extract the spectral functions without any phenomenological parametrization, and…

High Energy Physics - Phenomenology · Physics 2012-12-04 Kei Suzuki , Philipp Gubler , Kenji Morita , Makoto Oka

We investigate the phase structure and the equation of state (EoS) for dense two-color QCD (QC$_2$D) at low temperature ($T = 40$ MeV, $32^4$ lattice) for the purpose of extending our previous works~\cite{Iida:2019rah, Iida:2022hyy} at…

High Energy Physics - Lattice · Physics 2024-07-25 Kei Iida , Etsuko Itou , Kotaro Murakami , Daiki Suenaga

We argue that the relative yields of $\Upsilon$ states observed at the LHC can be understood as bottomonium states coming to early thermal equilibrium and then freezing out. The bottomonium freezeout temperature is approximately 250 MeV. We…

Nuclear Theory · Physics 2014-05-28 Sourendu Gupta , Rishi Sharma

We extend our study of bottomonium spectral functions in the quark-gluon plasma to nonzero momentum. We use lattice QCD simulations with two flavours of light quark on highly anisotropic lattices and treat the bottom quark with…

We present preliminary studies of bottomonia spectral functions at zero and finite temperature using quenched anisotropic lattices. The heavy quark is treated within Fermilab approach. We find no modification of the $\eta_b$ and $\Upsilon$…

High Energy Physics - Lattice · Physics 2007-05-23 K. Petrov , A. Jakovac , P. Petreczky , A. Velytsky

Using Non-Relativistic QCD (NRQCD), we study heavy quark mass dependence of S-wave and P-wave bottomonium correlators for 0.42Tc <= T <= 2.09Tc and study spectral functions of S-wave bottomonium states moving in a thermal bath at these…

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