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doi:10.1103/physrevd.80.019902

Cited by 3 publications

(3 citation statements)

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“…For the triplet 2S states differences in predicted masses are not large and in [1], [46], and our calculations M (D * (2S)) and M (D * s (2S)) lie in the range 2.64-2.67 GeV and 2.73-2.75 GeV, respectively. These predictions are in good agreement with the experimental mass, M exp (D * s (2S)) = 2710 ± 2± 12 7 MeV [47], [48], while in [45] predicted mass is by ∼ 70 MeV smaller. ¿From our analysis it follows that observation of the singlet states, D(2 1 S 0 ) and D s (2 S 0 ), is crucially important for understanding of spin-spin interaction in systems of large sizes, in particular, it could clarify what is a characteristic value of the strong coupling in HF interaction.…”

Section: Large Hfs In Charmonium and The D Ds Mesonssupporting

confidence: 83%

The hyperfine splittings in heavy-light mesons and quarkonia

2011

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Hyperfine splittings (HFS) are calculated within the Field Correlator Method, taking into account relativistic corrections. The HFS in bottomonium and the Bq (q=n,s) mesons are shown to be in full agreement with experiment if a universal coupling αHF = 0.310 is taken in perturbative spin-spin potential. It gives M (B * ) − M (B) = 45.7(3) MeV, M (B * s ) − M (Bs) = 46.7(3) MeV (n f = 4), while in bottomonium ∆HF (bb) = M (Υ(9460)) − M (η b (1S)) = 63.4 MeV for n f = 4 and 71.1 MeV for n f = 5 are obtained; just latter agrees with recent BaBar data. For unobserved excited states we predict M (Υ(2S)) − M (η b (2S)) = 36(2) MeV, M (Υ(3S)) − M (η(3S)) = 28(2) MeV, and also M (B * c ) = 6334(4) MeV, M (Bc(2S)) = 6868(4) MeV, M (B * c (2S)) = 6905 (4) MeV. The mass splittings between D(2 3 S1) − D(2 1 S0), Ds(2 3 S1) − Ds(2 1 S0) are predicted to be ∼ 70 MeV, which are significantly smaller than in several other studies. * Electronic address: badalian@itep.ru † Electronic address: blg.bakker@few.vu.nl ‡ Electronic address: danilkin@itep.ru

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Section: Large Hfs In Charmonium and The D Ds Mesonssupporting

confidence: 83%

The hyperfine splittings in heavy-light mesons and quarkonia

2011

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“…The large transverse polarization in some penguin dominated decays to light vector particles, like B → φK * [5], are also somewhat difficult to understand in the SM where naively one expects the transverse polarization amplitudes to be suppressed. A further effect has recently been seen in the lepton sector: in the exclusive decay B 0 d →K * µ + µ − , the forward-backward asymmetry has been found to deviate somewhat from the predictions of the SM [6,7]. Although this disagreement is not statistically significant, the Belle experiment itself claims this measurement shows a clear hint of physics beyond the SM [8].…”

Section: Introductionmentioning

confidence: 99%

Like-sign dimuon charge asymmetry in the Randall-Sundrum model

2011

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We confirm that in order to account for the recent DØ result of large like-sign dimuon charge asymmetry, a considerable large new physics effect in Γ s 12 is required in addition to a large CP violating phase in Bs −Bs mixing. In the Randall-Sundrum model of warped geometry, where the fermion fields reside in the bulk, new sources of flavor and CP violation are obtained. We analyze the like-sign dimuon asymmetry in this class of model as an example of the desired new physics. We show that the wrong-charge asymmetry, a s sl , which is related to the dimuon asymmetry, is significantly altered compared to the standard model value. However, experimental limits from ∆Ms, ∆Γs as well as K mixing and electroweak corrections constrain it to be greater than a σ away from its experimental average value. This model cannot fully account for the DØ anomaly due to its inability to generate a sufficient new contribution to the width difference Γ

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“…Invariant-mass distribution for J P C = 1 −− D * D * states published by the BaBar Collaboration[13]. The vertical lines indicate the spectrum for HO confinement in the J P C = 1 −− cc sector.…”

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confidence: 99%