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CP asymmetries in two-body D decays

Bhubanjyoti Bhattacharya
Universite de Montreal

I will talk about a phenomenological model to describe D decays to pairs of pseudoscalars, and a pseudoscalar and a vector. The model parameters are tree level amplitudes for two body D decays. Assuming flavor-SU(3) symmetry we can extract these parameters by performing fits to known decay rates. I will describe how the model parameters may be used to study direct CP asymmetries in D decays. In light of the recent LHCb measurement of  ∆ACP ≡ ACP(K+K−) - ACP (π+π−) = [−0.82 ± 0.21(stat) ± 0.11(syst)]%,
I discuss an attempt to parametrize CPV in these channels using the earlier discussion of 2 body decays. If time permits, I will talk about some recent work on applying the 2 body results to extracting relative phases on Dalitz plots.

Mercredi, 22 Février, 2012 - 10:30
Lieu de Séminaire: 
Café et biscuits: 
10h00; V-215

Groupe de Physique des particules
​Université de Montréal
C.P. 6128, Succ. Centre-ville,
Montréal, QC H3C 3J7
Tél : 514-343-5607
Fax : 514-343-7357