bfys-physics December 2010

bfys-physics@nikhef.nl

4 participants
2 discussions

[Bfys-physics] Bfys Meeting Friday 19 November 9:30-10:45 hours in N328
by Tjeerd Ketel 13 May '11

13 May '11

Bfys Meeting Friday 19 November 9:30-10:45 hours in N328 Dear Colleagues, We have booked a Bfys meeting in N328 (and EVO) 9:30 Periodical occupational health examination (PAGO) (Marcel Vervoort) Also if you are not present at this meeting, you can always find this information at the Nikhef Calendar of 19 November. 9:50 Velopix in the full simulation of LHCb (Victor Coco) 10:30 Any other business Best regards, Thomas and Tjeerd =================================================================== Nikhef Calendar: http://agenda.nikhef.nl/conferenceDisplay.py?confId=1239 =================================================================== You have BOOKED a meeting in EVO (http://evo.caltech.edu). Title: Nikhef Description: Bfys Meeting 9:30-10:45 Community: LHCb Password: n328 Meeting Access Information: - Meeting URL http://evo.caltech.edu/evoNext/koala.jnlp?meeting=M9MIMi2I2sDvDn9D98DD99 - Password: n328 - Phone Bridge ID: 256 7075 Password: 6287 EVO Phone Bridge Telephone Numbers: --------------- - Switzerland (CERN, Geneva) +41 22 76 71400 - Netherlands (Nikhef, Amsterdam) +31 20 7165293 Dial '2' at the prompt ===================================================================

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[Bfys-physics] Theoretical uncertainties on fs/fd, and B0->D-pi+
by Niels Tuning 14 Dec '10

14 Dec '10

Hi friends, For your information, Robert, Nicola and me had a closer (phenomenological) look into the ratios of B->Dh decays, in the light of the determination of fs/fd. In case you are interested, we just submitted a preprint describing our findings: http://arxiv.org/abs/1012.2784 In summary, we have reached the following conclusions: 1) If we use the ratio N(B0->D-K+)/N(Bs->Ds-pi+) to determine fs/fd we argue that the uncertainty from SU(3) breaking of factorization is 2%. 2) We propose that we can also use the Cabibbo favoured decay, ie. N(B0->D-pi+)/N(Bs->Ds-pi+), for the determination of fs/fd. The price to pay is that the theoretical uncertainty is a bit larger due to the extra ("exchange") diagram in B0->D-pi+. Cheers, Robert, Nicola & Niels

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bfys-physics December 2010