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DOI: 10.5445/IR/1000081514
Veröffentlicht am 03.04.2018

The photon polarization in radiative D decays, phenomenologically

de Boer, Stefan; Hiller, Gudrun

We work out the phenomenology of untagged time-dependent analysis with radiative D0-decays into CP eigenstates, which allows to probe the photon polarization by means of the charm mesons’ finite width difference. We show that D0 → φγ or D0 → ¯K 0∗ γ decays, which are SM-dominated, or SM-like, respectively, together with Uspin allow to obtain chirality-predictions for radiative decay amplitudes. The order of magnitude of wrong-chirality contributions in the SM can be cross-checked with an up–down asymmetry in D0 → ¯K 0 1 (→ ¯K ππ)γ . We explore the sensitivity to new physics in |c| = |u| = 1 dipole couplings in the decays D0 → ρ0γ .We point out the possibility to test the SM with Ds → K+ 1 (→ Kππ)γ decays.

Zugehörige Institution(en) am KIT Institut für Theoretische Teilchenphysik (TTP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
URN: urn:nbn:de:swb:90-815142
KITopen ID: 1000081514
Erschienen in The European physical journal / C
Band 78
Heft 3
Seiten Art.Nr. 188
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