ar X iv : h ep - p h / 06 02 10 7 v 1 1 3 Fe b 20 06 Automated Calculation Scheme for α n Contributions of QED to Lepton g −

ar X iv : h ep - p h / 06 02 06 6 v 1 7 Fe b 20 06 X ( 3872 ) in effective field theory

We consider the implications from the possibility that the recently observed state X(3872) is a meson-antimeson molecule. We write an effective Lagrangian consistent with the heavy-quark and chiral symmetries needed to describe X(3872) and study its properties.

ar X iv : h ep - p h / 02 06 28 1 v 1 2 7 Ju n 20 02 IMSc - 2002 / 06 / 13 Penguin Pollution in B 0 d → ππ 1

A principal decay mode considered for the measurement of the angle α, is B d(t) → ππ. Unfortunately, this mode suffers from a well-known problem: penguin contributions may be large [2], and their presence will spoil the clean extraction of α. In the presence of penguin amplitudes, the CP asymmetry in B d(t) → ππ does not measure sin 2α, but rather some effective (“polluted”) angle 2αeff . We ma...

ar X iv : m at h / 06 02 37 1 v 1 [ m at h . A G ] 1 7 Fe b 20 06 Braid Monodromy of Hypersurface Singularities

ar X iv : h ep - p h / 07 02 02 6 v 1 2 F eb 2 00 7 The τ lepton anomalous magnetic moment

We review the Standard Model prediction of the τ lepton g−2 presenting updated QED and electroweak contributions, as well as recent determinations of the leading-order hadronic term, based on the low energy e + e − data, and of the hadronic light-by-light one.

ar X iv : h ep - p h / 02 06 17 1 v 2 2 4 Ju n 20 02 IPHE 2002 - 009 June 24 , 2002 B 0 – B 0 MIXING