<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi>Λ</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>Λ</mml:mi></mml:mrow><mml:mrow><mml:mi>b</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>hypernuclei

Tsushima, K.; Khanna, F. C.

doi:10.1103/physrevc.67.015211

Cited by 57 publications

(72 citation statements)

References 60 publications

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“…We note that the quark-meson coupling (QMC) calculations of Refs. [65,66], performed at T = 0, obtained a somewhat smaller scalar potential (about half the present one) for the and baryons due to the inclusion of nonlinear terms associated to quark dynamics. To the best of our knowledge, no temperature effects have been studied within this framework.…”

Section: A S-wave Kaon Nucleon Scattering and Kaon Self-energymentioning

confidence: 50%

Strange mesons in nuclear matter at finite temperature

2008

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We study the properties of K andK mesons in nuclear matter at finite temperature from a chiral unitary approach in coupled channels that incorporates the s and p waves of the kaon-nucleon interaction. The in-medium solution accounts for Pauli blocking effects, mean-field binding on all the baryons involved, and π and kaon self-energies. We calculate K andK (off-shell) spectral functions and single-particle properties. TheK effective mass gets lowered by about −50 MeV in cold nuclear matter at saturation density and by half this reduction at T = 100 MeV. The p-wave contribution to theK optical potential, due to , , and * excitations, becomes significant for momenta larger than 200 MeV/c and reduces the attraction felt by theK in the nuclear medium. TheK spectral function spreads over a wide range of energies, reflecting the melting of the (1405) resonance and the contribution of Y N −1 components at finite temperature. In the KN sector, we find that the low-density theorem is a good approximation for the K self-energy close to saturation density due to the absence of resonance-hole excitations. The K potential shows a moderate repulsive behavior, whereas the quasiparticle peak is considerably broadened with increasing density and temperature. We discuss the implications for the decay of the φ meson at GSI Schwerionen Synchrotron energies as well as in the future Facility for Antiproton and Ion Research project.

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Section: A S-wave Kaon Nucleon Scattering and Kaon Self-energymentioning

confidence: 50%

Strange mesons in nuclear matter at finite temperature

2008

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“…[34], performed at T = 0, obtained a somewhat smaller scalar potential (about half the present one) for the (c) and (c) baryons due to the inclusion of an effective coupling for each baryon species, C j (σ ), where "j " is the label for baryons. This factor was introduced to mimic the baryon structure.…”

Section: A Coupled Meson-baryon Channels In Free Spacementioning

confidence: 56%

Open charm in nuclear matter at finite temperature

2008

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We study the properties of open-charm mesons (D andD) 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 Tomozawa-Weinberg term supplemented by an attractive scalar-isoscalar interaction. The inmedium solution at finite temperature incorporates Pauli blocking effects, mean-field binding on all the baryons involved, and π and open-charm meson self-energies in a self-consistent manner. In the DN sector, the c and c resonances, generated dynamically at 2593 and 2770 MeV in free space, remain close to their free-space position while acquiring a remarkable width due to the thermal smearing of Pauli blocking as well as from the nuclear matter density effects. As a result, the D meson spectral density shows a single pronounced peak for energies close to the D meson free-space mass that broadens with increasing matter density with an extended tail particularly toward lower energies. TheD potential shows a moderate repulsive behavior coming from the dominant I = 1 contribution of theDN interaction. The low-density theorem is, however, not a good approximation for theD self-energy in spite of the absence of resonance-hole contributions close to threshold in this case. We speculate the possibility of D-mesic nuclei as well as discuss some consequences for the J / suppression in heavy-ion collisions, in particular for the future CBM experiment at FAIR.

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“…In the recent literature, there have been many discussions about charmed and bottom nuclei with bound charm and bottom hadrons. For example, charmed nuclei may have a c baryon [1][2][3], a c baryon [3], a D meson [4][5][6], or aD meson [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] for open charm and a J /ψ [22][23][24][25][26] for hidden charm, inside normal nuclei. Bottom nuclei may have a b baryon [1,2], a b baryon, aB meson, or a B meson [10,21] for open bottom and a ϒ for hidden bottom.…”

Section: Introductionmentioning

confidence: 99%

“…For example, charmed nuclei may have a c baryon [1][2][3], a c baryon [3], a D meson [4][5][6], or aD meson [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] for open charm and a J /ψ [22][23][24][25][26] for hidden charm, inside normal nuclei. Bottom nuclei may have a b baryon [1,2], a b baryon, aB meson, or a B meson [10,21] for open bottom and a ϒ for hidden bottom. Some of these discussions were motivated by the possible attractive force between a charm (bottom) hadron and a nucleon, which was found in studies of hadronic molecules as exotic hadrons [27][28][29][30][31][32][33] (see also [34][35][36][37]).…”

Section: Introductionmentioning

confidence: 99%

Heavy-quark dynamics for charm and bottom flavor on the Fermi surface at zero temperature

2013

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We discuss the dynamics in a finite-density medium including a heavy impurity particle (hadron or quark) with a heavy flavor, charm and bottom, at zero temperature. As a system, we consider aD (B) meson embedded in nuclear matter as a heavy impurity boson with SU(2) isospin symmetry. As another system, we also consider a charm (bottom) quark embedded in quark matter as a heavy impurity fermion with SU(3) color symmetry. We suppose a vector current interaction with SU(n) symmetry (n 2) for the fermion composing the Fermi surface and the embedded heavy impurity particle, and we calculate the scattering amplitude perturbatively for the small coupling constant up to one-loop level. We obtain that the scattering amplitude has a logarithmic enhancement in the large-mass limit of the heavy impurity particle, and we show that the perturbative calculation breaks down for any small coupling constant in this limit.

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Λc+andΛbhypernuclei

Cited by 57 publications

References 60 publications

Strange mesons in nuclear matter at finite temperature

Strange mesons in nuclear matter at finite temperature

Open charm in nuclear matter at finite temperature

Heavy-quark dynamics for charm and bottom flavor on the Fermi surface at zero temperature

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