bfys-physics April 2011

bfys-physics@nikhef.nl

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[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] Fwd: [Theory-wide] Nikhef theory seminar -- Thursday 28th @ 2pm
by Robert Fleischer 27 Apr '11

27 Apr '11

Dear B-Physics Friends, we have a theory seminar tomorrow that might be interesting for some of you (please see details below). Best regards, Robert Begin forwarded message: > From: Damien George <dpgeorge(a)nikhef.nl> > Date: April 27, 2011 12:36:23 PM GMT+02:00 > To: theory-wide(a)nikhef.nl > Subject: [Theory-wide] Nikhef theory seminar -- Thursday 28th @ 2pm > > Dear all, > > Tomorrow we have a theory seminar at 2pm in room H331. The speaker is > Michele Della Morte from Mainz. See below for details. > > Regards, > Damien George and Mert Aybat. > > ---- > > Date/place: Thursday 28th April, 2pm, H331 > Speaker: Michele Della Morte (Mainz) > Title: Non-perturbative Heavy Quark Effective Theory on the lattice > > The b-quark is too heavy to be treated dynamically on the lattice. Indeed, > in units of nowadays affordable resolutions am_ b >> 1. A theoretically > attractive option is to use effective theories like Heavy Quark Effective > Theory (HQET), which provides the correct asymptotic description of QCD > correlation functions in the limit m_b to infinity. Subleading effects are > described by higher dimensional operators whose coupling constants are > formally O(1/m_b) to the appropriate power. The degrees of freedom in the > effective theory are strongly coupled and therefore a non-perturbative > approach is needed. In addition HQET has to be matched to the full theory, > a step, which must as well be performed non-perturbatively beyond leading > order in 1/m_b. > > We have introduced a framework for non-perturbative HQET on the lattice. > In a first step we match HQET and QCD in a small volume (L=0.4 fm). To > make contact with phenomenology the HQET expressions of the relevant > quantities are then evolved to large volume. The essential tools in this > step are the step scaling functions, which we introduce to describe the > effects of a change in the linear size L of the system by a factor two. We > present non-perturbative results at NLO in 1/m_bfor the b-quark mass, the > B_s spectrum and decay constant in the quenched approximation and with two > dynamical flavors. Perspectives on other phenomenologically interesting > quantities (as semileptonic form factors) are also discussed. > > _______________________________________________ > Theory-wide mailing list > Theory-wide(a)nikhef.nl > https://mailman.nikhef.nl/mailman/listinfo/theory-wide

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bfys-physics April 2011