First Measurement of the Form Factors in the Decays<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>D</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>ρ</mml:mi><mml:mo mathvariant="bold">−</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo mathvariant="bold">+</mml:mo></mml:msup><mml:msub><mml:mi>ν</mml:mi><mml:mi>e</mml:mi></mml:msub></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml

Dobbs, S.; Metreveli, Z.; Seth, K. K.; Tomaradze, A.; Xiao, Ting; Martin, L.; Powell, A.; Wilkinson, G.; Méndez, H.; Asner, D. M.; Tatishvili, G.; Ge, Jun; Huang, G. S.; Miller, D. H.; Pavlunin, V.; Shipsey, I. P. J.; Adams, G. S.; Hu, Dandan; Moziak, B.; Napolitano, J.; Ecklund, K. M.; Insler, J.; Muramatsu, H.; Park, C. S.; Pearson, L. J.; Thorndike, E. H.; Ricciardi, S.; Thomas, C.; Artuso, M.; Blusk, S.; Mountain, R.; Skwarnicki, T.; Stone, S.; Zhang, L. M.; Bonvicini, G.; Cinabro, D.; Lincoln, A.; Smith, M. J.; Zhou, Peng; Zhu, J.; Naik, P.; Rademacker, J. H.; Edwards, K. W.; Randrianarivony, K.; Briere, R. A.; Vogel, H.; Onyisi, P. U. E.; Rosner, Jonathan L.; Alexander, J.; Cassel, D. G.; Das, S.; Ehrlich, R.; Gibbons, L. K.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Kreinick, D. L.; Кузнецов, В. Е.; Patterson, J. R.; Peterson, D.; Riley, D.; Rýd, A.; Sadoff, A. J.; Shi, X.; Sun, W.; Yelton, J.; Rubin, P.; Lowrey, N.; Mehrabyan, S.; Selen, M.; Wiss, J.; Libby, J.; Kornicer, M.; Mitchell, R. E.; Tarbert, C. M.; Besson, D.; Pedlar, T. K.; Cronin-Hennessy, D.; Hietala, J.

doi:10.1103/physrevlett.110.131802

Cited by 29 publications

(29 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The normalization of the form factors at zero momentum transfer has been measured experimentally by the CLEO collaboration [43], as summarized in table 2 below. For the q 2 dependence, we adopt the parametrization that has been proposed in [44], where…”

Section: Naive Factorizationmentioning

confidence: 99%

D → ρℓ + ℓ − decays in the QCD factorization approach

Feldmann¹,

Müller²,

Seidel³

2017

J. High Energ. Phys.

View full text Add to dashboard Cite

We consider rare semileptonic decays of a heavy D-meson into a light vector meson in the framework of QCD factorization. In contrast to the corresponding B-meson decays, the naive factorization hypothesis does not even serve as a first approximation. Rather, the decay amplitudes appear to be dominated by non-factorizable dynamics, e.g. through annihilation topologies, which are particularly sensitive to long-distance hadronic contributions. We therefore pay particular attention to intermediate vector-meson resonances appearing in quark-loop and annihilation topologies. Compared to the analogous B-meson decays, we identify a number of effects that result in very large theoretical uncertainties for differential decay rates. Some of these effects are found to cancel in the ratio of partially integrated decay rates for transversely and longitudinally polarized ρ mesons. On the phenomenological side this implies a very limited potential to constrain physics beyond the Standard Model by means of these decays.

show abstract

Section: Naive Factorizationmentioning

confidence: 99%

D → ρℓ + ℓ − decays in the QCD factorization approach

Feldmann¹,

Müller²,

Seidel³

2017

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…(11)- (14), from which one expects the best theoretical sensitivity is derived. The most sensitive observables in the context of real righthanded currents, are hP 1 i, hP 0 5 i, and hP 5;4 i.…”

Section: B Simple Generalized Ratiosmentioning

confidence: 99%

“…[12,13]) or event probabilities are assigned (see, e.g., Ref. [14]). Both methods are complicated, and as we are interested in the search for right-handed currents, corresponding to constraining a single unknown parameter, we explore simpler variables, which amount to counting experiments in different regions of phase space.…”

Section: Possible Observablesmentioning

confidence: 99%

“…It is well known from the literature on both semileptonic and rare decays that a full description of the four-body final state in B → ρlν depends on the dilepton invariant mass, q 2 , and three angles. While we assume that the neutrino four-momentum is reconstructed, past studies of B → D Ã [12,13] and D → ρ [14] semileptonic decays show that for B → ρlν, which has a much smaller rate, the full angular analysis will be challenging and may be many years in the future. Thus, it is interesting to explore how the best sensitivity to ϵ R may be obtained using current and near future data sets.…”

Section: Introductionmentioning

confidence: 99%

“…The observables, hP 1 i (top left), hP 0 5 i (top center), hP 5;4 i (top right), hP 8;5 i (lower left), hP 9;5 i (lower center), hP 8;3 i (lower right), are defined in Eqs. (11)-(14).…”

mentioning

confidence: 97%

See 2 more Smart Citations

New ways to search for right-handed current inB→ρℓν¯decay

2014

View full text Add to dashboard Cite

An interesting possibility to ease the tension between various determinations of jV ub j is to allow a small right-handed contribution to the standard model weak current. The present bounds on such a contribution are fairly weak. We propose new ways to search for such a beyond standard model contribution in semileptonic B → ρlν decay. Generalized asymmetries in one, two, or three angular variables are introduced as discriminators, which do not require an unbinned analysis of the fully differential distribution, and a detailed study of the corresponding theoretical uncertainties is performed. A discussion on how binned measurements can access all the angular information follows, which may be useful in both B → ρlν and B → K Ã l þ l − , and possibly essential in the former decay due to backgrounds.

show abstract

Rare radiative charm decays within the standard model and beyond

Boer

Hiller

2017

J. High Energ. Phys.

View full text Add to dashboard Cite

We present standard model (SM) estimates for exclusive c → uγ processes in heavy quark and hybrid frameworks. Measured branching ratios B(D 0 → (φ,K * 0 )γ) are at or somewhat exceeding the upper range of the SM and suggest slow convergence of the 1/m D , α s -expansion. Model-independent constraints on |∆C| = |∆U | = 1 dipole operators from B(D 0 → ρ 0 γ) data are obtained. Predictions and implications for leptoquark models are worked out. While branching ratios are SM-like CP asymmetries 10% can be induced. In SUSY deviations from the SM can be even larger with CP asymmetries of O(0.1). If Λ cbaryons are produced polarized, such as at the Z-pole, an angular asymmetry in Λ c → pγ decays can be studied that is sensitive to chirality-flipped contributions.

show abstract

First Measurement of the Form Factors in the DecaysD0→ρ−e+νeand

Cited by 29 publications

References 27 publications

D → ρℓ + ℓ − decays in the QCD factorization approach

D → ρℓ + ℓ − decays in the QCD factorization approach

New ways to search for right-handed current inB→ρℓν¯decay

Rare radiative charm decays within the standard model and beyond

Contact Info

Product

Resources

About