Even- and odd-parity charmed meson masses in heavy hadron chiral perturbation theory

Mehen, Thomas; Springer, Roxanne P.

doi:10.1103/physrevd.72.034006

Cited by 53 publications

(131 citation statements)

References 56 publications

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“…Such predictions have been made for conventional mesons with parity doubling [5], using heavy quark effective theory [27,28] or for B ( * ) K molecules in a variety of publications [11][12][13][14]29]. Here, we update the latter class of works, and especially identify radiative decays as the probably most promising discovery modes of the bottom-partners of the D * s0 and D s1 .…”

Section: Introductionmentioning

confidence: 99%

Strong and radiative decays of the D s0 * (2317) and Ds1(2460)

et al. 2014

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Since their discovery in 2003, the open charm states D * s0 (2317) and D s1 (2460) provide a challenge to the conventional quark model. In recent years, theoretical evidence has been accumulated for both states in favor of a predominantly DK and D * K molecular nature, respectively. However, a direct experimental proof of this hypothesis still needs to be found. Since radiative decays are generally believed to be sensitive to the inner structure of the decaying particles, we study in this work the radiative and strong decays of both the D * s0 (2317) and D s1 (2460), as well as of their counterparts in the bottom sector. While the strong decays are indeed strongly enhanced for molecular states, the radiative decays are of similar order of magnitude in different pictures. Thus, the experimental observable that allows one to conclusively quantify the molecular components of the D * s0 (2317) and D s1 (2460) is the hadronic width, and not the radiative one, in contradistinction to common belief. We also find that radiative decays of the sibling states in the bottom sector are significantly more frequent than the hadronic ones. Based on this, we identify their most promising discovery channels. *

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Section: Introductionmentioning

confidence: 99%

Strong and radiative decays of the D s0 * (2317) and Ds1(2460)

et al. 2014

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“…level [6]. However, it is not clear if the parity doubling is a consequence of quantum chromodynamics (QCD).…”

Section: Introductionmentioning

confidence: 99%

Light meson mass dependence of the positive-parity heavy-strange mesons

et al. 2011

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Abstract. We calculate the masses of the resonances D * s0 (2317) and Ds1(2460) as well as their bottom partners as bound states of a kaon and a D ( * ) -and B ( * ) -meson, respectively, in unitarized chiral perturbation theory at next-to-leading order. After fixing the parameters in the D * s0 (2317) channel, the calculated mass for the Ds1(2460) is found in excellent agreement with experiment. The masses for the analogous states with a bottom quark are predicted to be M B * s0 = (5696 ± 40) MeV and MB s1 = (5742 ± 40) MeV in reasonable agreement with previous analyses. In particular, we predict MB s1 −M B * s0 = 46 ± 1 MeV. We also explore the dependence of the states on the pion and kaon masses. We argue that the kaon mass dependence of a kaonic bound state should be almost linear with slope about unity. Such a dependence is specific to the assumed molecular nature of the states. We suggest to extract the kaon mass dependence of these states from lattice QCD calculations.

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“…Our work showed that including the counterterms is critical for fitting the current data on charm mesons. We also found that certain parameter relations in the parity doubling model are not renormalized at one loop, providing a natural explanation for the equality of the hyperfine splittings of ground state and excited doublets [90].…”

Section: Even-parity Excited Charmed Strange Mesonsmentioning

confidence: 94%