English
Related papers

Related papers: Thermal hadron spectrum in $e^+e^-$ annihilation f…

200 papers

Classical electromagnetic radiation from moving point charges is foundational, but the thermal dynamics responsible for classical acceleration temperature are poorly understood. We investigate the thermal properties of classical…

Quantum Physics · Physics 2024-11-19 Evgenii Ievlev , Michael R. R. Good , Paul C. W. Davies

Here, we calculate the pseudo-scalar glueball mass at finite temperature from the holographic QCD in $3+1$ dimensions. The decoupled geometry of the non-supersymmetric (non-susy) D$3$ brane at the finite temperature which is the solution of…

High Energy Physics - Theory · Physics 2022-03-23 Kuntal Nayek , Shibaji Roy

Charged particle momentum distributions are studied in the reaction e+e- -> hadrons, using data collected with the OPAL detector at centre-of-mass energies from 192 GeV to 209 GeV. The data correspond to an average centre-of- mass energy of…

High Energy Physics - Experiment · Physics 2008-12-18 The OPAL collaboration , G. Abbiendi

In this paper, we study the massive Dirac equation with the presence of the Morse potential in polar coordinate. The Dirac Hamiltonian is written as two second-order differential equations in terms of two spinor wavefunctions. Since the…

Quantum Physics · Physics 2021-04-27 Z. Zali , Alireza Amani , J. Sadeghi , B. Pourhassan

Using the Bayesian calibrated iEBE-MUSIC framework, we compute the production of electromagnetic radiation from hot hadronic matter at finite baryon density. Results for thermal photon and thermal dilepton yields are obtained by folding…

Nuclear Theory · Physics 2025-09-04 Xiang-Yu Wu , Charles Gale , Sangyong Jeon , Jean-François Paquet , Björn Schenke , Chun Shen

At finite temperature the distribution of the total momentum is an observable characterizing the thermal state of a field theory, and its cumulants are related to thermodynamic potentials. In a relativistic system at zero chemical…

High Energy Physics - Lattice · Physics 2011-10-20 Leonardo Giusti

We investigate the inclusive and semi-inclusive productions of spin-3/2 hadrons, such as $\Omega$, in unpolarized $e^+ e^-$ annihilation. The general differential cross sections are expressed in terms of structure functions in accordance to…

High Energy Physics - Phenomenology · Physics 2022-11-09 Jing Zhao , Zhe Zhang , Zuo-tang Liang , Tianbo Liu , Ya-jin Zhou

It is shown that hadron abundances in high energy e+e-, pp and p{\bar p} collisions, calculated by assuming that particles originate in hadron gas fireballs at thermal and partial chemical equilibrium, are in very good agreement with the…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. Becattini

We study the possibility of uniquely identifying the effects of graviton exchange from other new physics in high energy e^+e^- annihilation into fermion-pairs. For this purpose, we use as basic observable a specific asymmetry among…

High Energy Physics - Phenomenology · Physics 2009-11-10 P. Osland , A. A. Pankov , N. Paver

Using a Lorentz invariant deformed string/gauge duality model at finite temperature we calculate the thermal fluctuation and the corresponding linear response, verifying the fluctuation-dissipation theorem. The deformed AdS$_5$ is…

High Energy Physics - Theory · Physics 2020-10-07 Nathan G. Caldeira , Eduardo Folco Capossoli , Carlos A. D. Zarro , Henrique Boschi-Filho

The process $eq \to eq +\gamma$ exhibits radiation zeros, i.e. configurations of the final-state particles for which the scattering amplitude vanishes. We study these zeros for both $e^+u$ and $e^+d$ scattering. The latter exhibits a type…

High Energy Physics - Phenomenology · Physics 2011-02-01 M. Heyssler , W. J. Stirling

We study the structures in cross sections and R ratios concerning electron-positron annihilation reactions, for open-strangeness, open-charm and open-beauty hadron-pair production, from the perspective of a recently developed production…

High Energy Physics - Phenomenology · Physics 2009-11-19 Eef van Beveren , George Rupp

The spectrum of vacuum fluctuations in the Milne space (i.e. the tau-eta coordinate system) is an important ingredient in the thermalization studies in relativistic heavy ion collisions. In this paper, the Schrodinger functional for the…

High Energy Physics - Phenomenology · Physics 2015-06-03 Sangyong Jeon , Thomas Epelbaum

The paper reports an analytical formula for the production cross section of $e^{+}e^{-}$ annihilation to hadrons in the vicinity of a narrow resonance, particularly in the $\tau$-charm region, while considering initial state radiation.…

High Energy Physics - Phenomenology · Physics 2024-09-30 Yanan Wang , Yadi Wang , Ping Wang

In two earlier papers it was demonstrated that Lorentzian and Galilean symmetries could both be useful in the analysis of the annihilation reaction $e^+ e^- \to \gamma \Lambda(\rightarrow p\pi^-) \bar{\Lambda}(\rightarrow \bar{p}\pi^+)$. It…

High Energy Physics - Phenomenology · Physics 2023-04-25 Göran Fäldt

We review methods developed in the gauge-string duality to treat energy loss by energetic probes of a strongly coupled thermal medium. After introducing the black hole description of the thermal medium, we discuss the trailing string behind…

High Energy Physics - Theory · Physics 2016-12-21 Steven S. Gubser , Silviu S. Pufu , Fabio D. Rocha , Amos Yarom

The formalism developed in the first paper of the series [arXiv:0901.1060] is applied to two thermodynamic systems: (i) of three global observables (the energy, the total electron number and the spin number), (ii) of one global observable…

Chemical Physics · Physics 2013-10-28 Robert Balawender , Andrzej Holas

We present the properties of spectrum of radiation emitted during gravitational collapse in which electromagnetic field strengths rise over the critical value for $e^+e^-$ pair creation. A drift from soft to a hard energy and a high energy…

Astrophysics · Physics 2010-11-11 Federico Fraschetti , Remo Ruffini , Luca Vitagliano , She-Sheng Xue

We present a systematic definition and analysis of the thermo-electric linear response in gauge/gravity systems focusing especially on models with massive gravity in the bulk and therefore momentum dissipation in the dual field theory. A…

High Energy Physics - Theory · Physics 2014-10-08 Andrea Amoretti , Alessandro Braggio , Nicola Maggiore , Nicodemo Magnoli , Daniele Musso

We estimate the stopping length of an energetic gluon in a thermal plasma of strongly coupled N=4 super-Yang-Mills theory by representing the gluon as a doubled string rising up out of the horizon.

High Energy Physics - Theory · Physics 2008-11-26 Steven S. Gubser , Daniel R. Gulotta , Silviu S. Pufu , Fabio D. Rocha