On studying charm in nuclei through antiproton annihilation

Sibirtsev, A.; Tsushima, K.; Thomas, A. W.

doi:10.1007/s100500050353

Cited by 144 publications

(170 citation statements)

References 32 publications

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“…[3,4], to be touched on later) the central entity is the meson propagator (or the correlator) in the nuclear environment, T [D(x)D(y)] nuc , where D(x) is the D-meson interpolating field.…”

Section: Critical Retrospectmentioning

confidence: 99%

“…[3,4] within the quark-meson coupling model [25]. Schematically, it is the "σ -ω" at the level of the u and d quarks confined in the nucleon and D-meson bags.…”

Section: B Nmfamentioning

confidence: 99%

“…Our present interest in this model is only in the sectors with quantum numbers C = 1, S = 0, I = 0 and I = 1 which are associated with the DN channel. As for theDN sector with quantum numbers C = −1, S = 0, QCDSR [1,2], the quark-meson coupling model [3,4], as well as the simple quark model suggest that the interaction is weak and quite likely repulsive. See also Ref.…”

Section: Why Have We Adopted But Modified the Hofmann-lutz Model?mentioning

confidence: 99%

“…[1][2][3][4][5][6][7]. The primary theoretical effort in this regard has been to understand how the mass of the D meson gets modified in nuclear matter: either normal or hot and/or dense.…”

Section: Introductionmentioning

confidence: 99%

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Dmesons in nuclear matter: ADNcoupled-channel equations approach

2006

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A set of coupled two-body scattering equations is solved for the DN system embedded in an isosymmetric nuclear matter. The in-medium behavior of charmed D mesons, (D + , D 0 ), is investigated from the self-consistent solution within this scheme. The effective meson-baryon Lagrangian in charm quantum number one sector, the key ingredient in the present study, is adopted from a recent model by Hofmann and Lutz that has aimed at combining the charmed meson degree of freedom in a consistent manner with chiral unitary models. After a critical examination, the original model is modified in several important aspects, such as the method of regularization, to be more consistent and practical for our objective. The resultant interaction is used to reproduce the position and width of the s-wave c (2593) resonance in the isospin zero DN channel. In the isospin one channel, it generates a rather wide resonance at ∼2770 MeV. The corresponding in-medium solution is then sought by incorporating Pauli blocking and the D-and π -meson dressing self-consistently. At normal nuclear matter density, the resultant c (2593) is found to stay narrow and shifted at a lower energy, whereas the I = 1 resonance is lowered in position as well and broadened considerably.

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“…[3,4], to be touched on later) the central entity is the meson propagator (or the correlator) in the nuclear environment, T [D(x)D(y)] nuc , where D(x) is the D-meson interpolating field.…”

Section: Critical Retrospectmentioning

confidence: 99%

“…[3,4] within the quark-meson coupling model [25]. Schematically, it is the "σ -ω" at the level of the u and d quarks confined in the nucleon and D-meson bags.…”

Section: B Nmfamentioning

confidence: 99%

Section: Why Have We Adopted But Modified the Hofmann-lutz Model?mentioning

confidence: 99%

“…[1][2][3][4][5][6][7]. The primary theoretical effort in this regard has been to understand how the mass of the D meson gets modified in nuclear matter: either normal or hot and/or dense.…”

Section: Introductionmentioning

confidence: 99%

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Dmesons in nuclear matter: ADNcoupled-channel equations approach

2006

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“…This shift in the energy of the ψ ′ can be important for the estimates of the decay ψ ′ →DD, which becomes possible in nuclear matter due to the shifts in the masses of the D andD mesons [39,40,41,42,43]. The main difference between the nuclear interactions of slow J/ψ and ψ ′ is that for the latter there exist subthreshold scattering processes: the charm-exchange process ψ ′ +N →Λ c +D, the charmonium transition scattering ψ ′ +N →J/ψ+N , and generally additional channels where in the latter process instead of a single nucleon excited states are being produced such as N π, ∆π, etc.…”

Section: The ψ ′ Interaction With Nucleonsmentioning

confidence: 99%

Interaction of slowJ/ψandψ′with nucleons

2005

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The interaction of the charmonium resonances J/ψ and ψ ′ with nucleons at low energies is considered using the multipole expansion and low-energy theorems in QCD. A lower bound is established for the relevant gluonic operator average over the nucleon. As a result we find the discussed interaction to be significantly stronger than previously estimated in the literature. In particular we conclude that the cross section of the J/ψ -nucleon elastic scattering at the threshold is very likely to exceed 17 millibarn and that existence of bound states of the J/ψ in light nuclei is possible. For the ψ ′ resonance we estimate even larger elastic scattering cross section and also a very large cross section of the process ψ ′ +N →ψ+N giving rise to the decay width of tens of MeV for the ψ ′ resonance in heavy nuclei.

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Resonances in chiral unitary approaches

et al. 2008

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The extension of chiral theories to the description of resonances, via the incorporation of unitarity in coupled channels, has provided us with a new theoretical perspective on the nature of some of the observed excited hadrons. In this contribution some of the early achievements in the field of baryonic resonances are reviewed, the recent evidence of the two-pole nature of the Lambda(1405) is discussed and results on charmed baryon resonances are presented.Comment: 6 pages, contribution to the Workshop on the Physics of excited nucleons (NSTAR 2007), Bonn (Germany) 5-8 September 200

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On studying charm in nuclei through antiproton annihilation

Cited by 144 publications

References 32 publications

Dmesons in nuclear matter: ADNcoupled-channel equations approach

Dmesons in nuclear matter: ADNcoupled-channel equations approach

Interaction of slowJ/ψandψ′with nucleons

Resonances in chiral unitary approaches

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