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Related papers: The D-\bar{D} matter in Walecka's mean field theor…

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In this work, we study the thermodynamic behavior of heavy-flavored meson matter in the framework of $(\sigma,\omega)$-meson-exchange model in relativistic mean field theory. We find a decreasing of the effective masses of $D$ and $B$…

High Energy Physics - Phenomenology · Physics 2012-12-06 L. M. Abreu , E. S. Nery , R. Rodrigues da Silva

The $D$ and $\bar {D}$ mesons are studied in hot dense matter within a self-consistent coupled-channel approach taking, as bare interaction, a broken SU(4) s-wave Tomozawa-Weinberg interaction supplemented by an attractive isoscalar-scalar…

Nuclear Theory · Physics 2008-11-26 Laura Tolos , Angels Ramos , Tetsuro Mizutani

We propose $D$ mesons as probes to investigate finite-volume effects for chiral symmetry breaking at zero and finite temperature. By using the $2+1$-flavor linear-sigma model with constituent light quarks, we analyze the Casimir effects for…

High Energy Physics - Phenomenology · Physics 2019-08-27 Tsutomu Ishikawa , Katsumasa Nakayama , Daiki Suenaga , Kei Suzuki

We calculate the in-medium $D$ meson self-energies in a hot pion gas induced by resonance interactions with pions. The appropriate resonances in the {\it s},~ {\it p} and {\it d} waves of the $D$ meson-pion pair are represented by low lying…

Nuclear Theory · Physics 2009-11-10 C. Fuchs , B. V. Martemyanov , Amand Faessler , M. I. Krivoruchenko

The anti-D meson self-energy is evaluated self-consistently, using unitarized coupled-channel theory, by computing the in-medium meson-baryon T-matrix in the C=-1,S=0 sector. The heavy pseudo-scalar and heavy vector mesons, anti-D and…

Nuclear Theory · Physics 2012-02-22 C. Garcia-Recio , J. Nieves , L. L. Salcedo , L. Tolos

The propagation of sigma meson in nuclear matter is studied in the Walecka model, assuming that the sigma couples to a pair of nucleon-antinucleon states and to particle-hole states, including the in medium effect of sigma-omega mixing. We…

High Energy Physics - Phenomenology · Physics 2010-11-24 J. R. Morones-Ibarra , Monica Menchaca Maciel , Ayax Santos-Guevara , Felipe Robledo Padilla

We investigate the equation of state of hadronic matter at finite values of baryon density and temperature reachable in high energy heavy ion collisions. The analysis is performed by requiring the Gibbs conditions on the global conservation…

Nuclear Theory · Physics 2010-05-19 A. Lavagno

We study the in-medium properties of $D$ and $\bar{D}$ mesons in isospin-asymmetric nuclear matter at finite temperatures using an effective chiral SU(4) model. The interactions of $D$ and $\bar{D}$ mesons with nucleons, scalar isoscalar…

Nuclear Theory · Physics 2010-05-18 Arvind Kumar , Amruta Mishra

The energies and widths of several D^0 meson bound states for different nuclei are obtained using a D-meson selfenergy in the nuclear medium, which is evaluated in a selfconsistent manner using techniques of unitarized coupled-channel…

Nuclear Theory · Physics 2014-11-20 C. Garcia-Recio , J. Nieves , L. Tolos

Stimulated by recent experimental observation of $X_1(2900)$ just below the $\bar D_1K$ threshold, we extend our previous study of $\bar D_1D$ S-wave bound state by vector meson exchange to $\bar D_1K$ system as well as similar $\bar DK_1$,…

High Energy Physics - Phenomenology · Physics 2021-04-22 Xiang-Kun Dong , Bing-Song Zou

We study the properties of open-charm mesons ($D$ and $\bar {D}$) in nuclear matter at finite temperature within a self-consistent coupled-channel approach. The meson-baryon interactions are adopted from a type of broken SU(4) s-wave…

Nuclear Theory · Physics 2008-11-26 Laura Tolos , Angels Ramos , Tetsuro Mizutani

The proposed earlier relativistic mean-field model with hadron masses and coupling constants depending on the $\sigma$-meson field is generalized to finite temperatures. Within this approach we simulate the in-medium behavior of the hadron…

Nuclear Theory · Physics 2008-11-26 A. S. Khvorostukhin , V. D. Toneev , D. N. Voskresensky

We study $D$ and $D_s$ mesons at finite temperature using an effective field theory based on chiral and heavy-quark spin-flavor symmetries within the imaginary-time formalism. Interactions with the light degrees of freedom are unitarized…

High Energy Physics - Phenomenology · Physics 2020-05-27 Glòria Montaña , Àngels Ramos , Laura Tolos , Juan M. Torres-Rincon

The properties of the $\DsTT$ and $\DsFE$ mesons are studied using 125 ${\rm fb}^{-1}$ of $e^+e^- \to c \bar{c}$ data collected by the BaBar experiment. Preliminary mass estimates of $[2318.9\pm 0.3 ({\rm stat.}) \pm 0.9 ({\rm syst.})]$…

High Energy Physics - Experiment · Physics 2007-05-23 The BABAR Collaboration , B. Aubert

The influence of the in-medium mesons on the effective nucleon mass and in turn on the equation of state of hot/dense nuclear matter is discussed in the Walecka model. Due to the self-consistent treatment of couplings between nucleons and…

Nuclear Theory · Physics 2014-11-18 Ji-sheng Chen , Peng-fei Zhuang , Jia-rong Li

Physical reason behind the mass-shift of vector mesons ($\rho$, $\omega$, $\phi$) in nuclear matter is discussed in the Walecka model and in QCD sum rules. Using analytic formulas for the mass-shift valid at low densities, it is shown that…

Nuclear Theory · Physics 2016-09-08 Tetsuo Hatsuda

The possibility for occurrence of a Bose condensate of dibaryons in nuclear matter is investigated within the framework of the Walecka model in the mean-field approximation. Constraints for the omega - and sigma - meson coupling constants…

Nuclear Theory · Physics 2008-11-26 Amand Faessler , A. J. Buchmann , M. I. Krivoruchenko , B. V. Martemyanov

Hot hypernuclear matter is investigated in an explicit SU(3) quark model based on a mean field description of nonoverlapping baryon bags bound by the self-consistent exchange of scalar $\sigma, \zeta$ and vector $\omega, \phi$ mesons. The…

Nuclear Theory · Physics 2009-10-31 I. Zakout , H. R. Jaqaman , S. Pal , H. Stöcker , W. Greiner

We investigate the in-medium masses of $D$ and $\bar{D}$ mesons in the isospin-asymmetric nuclear matter at finite temperatures arising due to the interactions with the nucleons, the scalar isoscalar meson $\sigma$, and the scalar…

Nuclear Theory · Physics 2014-11-21 Arvind Kumar , Amruta Mishra

We calculate the effective mass of the $\omega$ meson in nuclear matter in a relativistic random-phase approximation to the Walecka model. The dressing of the meson propagator is driven by its coupling to particle-hole pairs and…

Nuclear Theory · Physics 2009-09-25 H. -C. Jean , J. Piekarewicz , A. G. Williams
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