Demise of CKM and its aftermath

作者：Lunghi Enrico^*; Soni Amarjit

来源：Comptes Rendus Physique, 2012, 13(2): 152-158.

DOI：10.1016/j.crhy.2011.11.007

• Flavour physics
• LHCb
• Super-B factories

Using firmly established experimental inputs such as is an element of(K). Delta M-d. Delta Ms. Br(B -> tau v). gamma. V-cb along with corresponding lattice matrix elements which have been well studied and are in full QCD such as B-K. SU(3) breaking ratio xi, B-Bs and in particular without using V-ub or the pseudoscalar decay constants f(Bd) or f(Bs) from the lattice, we show that the CKM-paradigm now appears to be in serious conflict with the data. Specifically the SM predicted value of sin 2 beta seems too high compared to direct experimental measured value by over 3 sigma. Furthermore, our study shows that new physics predominantly effects B-mixings and B-d ->Psi K-s, and not primarily in kaon-mixing or in B -> tau v. Model independent operator analysis suggests the scale of underlying new physics, accompanied by a BSM CP-odd phase, responsible for breaking of the SM is less than a few TeV, possibly as low as a few hundred GeV.

• 出版日期2012-3