Charmed meson rescattering in the reaction $$ \bar pd \uparrow \bar DDN $$

Haidenbauer, J.; Krein, G.; Meißner, Ulf‐G.; Sibirtsev, A.

doi:10.1140/epja/i2008-10602-x

Cited by 57 publications

(88 citation statements)

References 72 publications

(184 reference statements)

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“…In [36,37] the work of [31] is retaken and appropriate modifications are done in the potentials and the regularization scheme. Similar work is also done by the Jülich group in [38][39][40]. All these works share the dynamical generation of the Λ c (2595), which comes mostly from the interaction of the DN channel.…”

Section: Introductionmentioning

confidence: 66%

Combining heavy quark spin and local hidden gauge symmetries in the dynamical generation of hidden charm baryons

2013

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We present a coupled channel unitary approach to obtain states dynamically generated from the meson baryon interaction with hidden charm, using constraints of heavy quark spin symmetry. We use as basis of states,DB,D * B states, with B baryon charmed states belonging to the 20 representations of SU(4) with J P = 1/2 + , 3/2 + . In addition we also include the η c N and J/ψN states. The inclusion of these coupled channels is demanded by heavy quark spin symmetry, since in the large m Q limit the D and D * states are degenerate and are obtained from each other by means of a spin rotation, under which QCD is invariant. The novelty in the work is that we use dynamics from the extrapolation of the local hidden gauge model to SU(4) and we show that this dynamics fully respects the constraints of heavy quark spin symmetry.With the full space of states demanded by the heavy quark spin symmetry and the dynamics of the local hidden gauge we look for states dynamically generated and find four basic states which are bound, corresponding toDΣ c ,DΣ * c ,D * Σ c andD * Σ * c , decaying mostly into η c N and J/ψN . All the states appear in isospin I = 1/2 and we find no bound states or resonances in I = 3/2. TheDΣ c state appears in J = 1/2, theDΣ * c in J = 3/2, theD * Σ c appears nearly degenerate in J = 1/2, 3/2 and theD * Σ * c appears nearly degenerate in J = 1/2, 3/2, 5/2, with the peculiarity that in J = 5/2 the state has zero width in the space of states chosen. All the states are bound with about 50 MeV with respect to the correspondingDB thresholds and the width, except for the J = 5/2 state, is also of the same order of magnitude.

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Section: Introductionmentioning

confidence: 66%

Combining heavy quark spin and local hidden gauge symmetries in the dynamical generation of hidden charm baryons

2013

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“…For example, almost all knowledge on the DN interaction comes from calculations based on effective Lagrangians that are extensions of light-flavor chiral Lagrangians using SU (4) flavor symmetry [19][20][21][22][23][24][25] and heavy quark symmetry [6,26]. The Lagrangians involve coupling constants, like g ρDD , g ωDD , g ρD * D and g ρD * D * , whose values * aballonb@ift.unesp.br † gkrein@ift.unesp.br ‡ miller@ift.unesp.br are taken from SU (4) flavor and heavy-quark symmetry relations.…”

Section: Introductionmentioning

confidence: 99%

“…If in addition to SU (4) flavor symmetry, heavy-quark spin symmetry is invoked, one has g ρDD = g ρD * D = g ρD * D * = g πD * D to leading order in the charm quark mass [27,28]. The coupling g ρππ is constrained by experimental data; the studies of the DN interaction in Refs [22][23][24] utilized such a SU (4) relation, taking g ρππ = 6.0, which is the value used in a large body of work conducted within the Jülich model [29,30] for light-flavor hadrons. This value of g ρππ implies through SU (4) symmetry g ρDD = 3, which is not very much different from predictions based on the vector meson dominance (VMD) model: g DDρ = 2.52−2.8 [31,32].…”

Section: Introductionmentioning

confidence: 99%

Strong couplings and form factors of charmed mesons in holographic QCD

2017

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We extend the two-flavor hard-wall holographic model of Erlich, Katz, Son and Stephanov [Phys. Rev. Lett. 95, 261602 (2005)] to four flavors to incorporate strange and charm quarks. The model incorporates chiral and flavor symmetry breaking and provides a reasonable description of masses and weak decay constants of a variety of scalar, pseudoscalar, vector and axial-vector strange and charmed mesons. In particular, we examine flavor symmetry breaking in the strong couplings of the ρ meson to the charmed D and D * mesons. We also compute electromagnetic form factors of the π, ρ, K, K * , D and D * mesons. We compare our results for the D and D * mesons with lattice QCD data and other nonperturbative approaches.

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“…Particularly, unitarized coupled-channel methods have been used in the meson-baryon sector with charm content [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21], mostly motivated by the parallelism between the Λ(1405) and the Λ c (2595).…”

Section: Introductionmentioning

confidence: 99%