Propertius IV. 1. 27

LECTURES 1-27

lectures 1-27

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ar X iv : 0 90 7 . 27 54 v 1 [ he p - ph ] 1 6 Ju

Flavour changing neutral currents arise in the SU(3)c ⊗ SU(4)L ⊗ U(1)X extension of the standard model because anomaly cancellation among the fermion families requires one generation of quarks to transform differently from the other two under the gauge group. In the weak basis the distinction between quark families is meaningless. However, in the mass eigenstates basis, the Cabibbo-Kobayashi-Ma...

ar X iv : h ep - p h / 98 05 27 7 v 1 1 1 M ay 1 99 8

Data show that τB± ∼ τB0 , but τD± ∼ 2τD0 . The naive interpretation which attributes τD± ∼ 2τD0 to a destructive interference between two quark diagrams for D decays, definitely fails in the B-case. We investigate Close and Lipkin’s suggestion that the phases for producing radially excited states ψ2s in the decay products of B-mesons can possess an opposite sign to the integrals for ψ1s decay ...

NpgRJ_Ng_2007-27 1..6

Robert M Plenge1–3, Chris Cotsapas1,3, Leela Davies1, Alkes L Price1,4, Paul I W de Bakker1,3,4, Julian Maller1,3, Itsik Pe’er5, Noel P Burtt1, Brendan Blumenstiel1, Matt DeFelice1, Melissa Parkin1, Rachel Barry1, Wendy Winslow1, Claire Healy1, Robert R Graham1,3, Benjamin M Neale1,3,6, Elena Izmailova7, Ronenn Roubenoff 7, Alexander N Parker7, Roberta Glass2, Elizabeth W Karlson2, Nancy Maher2...