2016/02/09 by Damir Bečirević, Damir Becirevic, Svjetlana Fajfer +7 · 2 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-lat #hep-ph
paper · pdf · doi:10.48550/arxiv.1602.03030
29 pages
openalex publication_date 2016/02/09 · arxiv created 2016/02/18 · arxiv updated 2016/02/19 · openalex created_date 2022/09/01 · openalex updated_date 2026/07/28
We derive the expressions for the full angular distributions of B→ Dℓ ν_ℓ and B→ D∗ ℓ ν_ℓ decays and discuss the spectra on each angle separately. The coefficient functions, depending on helicity amplitudes, can then be combined in an ensemble of observables which can then be used to check for the presence of New Physics. We examine the sensitivity of each of these observables on the presence of non-Standard Model interaction terms at low energies. The expressions presented here are general and can be used for studying any other semileptonic pseudoscalar to pseudoscalar/vector meson decay. We also examine the problem of pollution of the B→ D∗(→ Dπ)Sℓ ν_ℓ decay sample by the B→ D0∗(→ Dπ)ℓ ν_ℓ events, and point out that a measurement of two particular quantities could clarify whether or not the (Dπ)S-\rm wave in the vicinity of D^∗-peak is (approximately) described by the Breit-Wigner formula.