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J Wudka

Publications and source records attributed to J Wudka.

At least 19 recordsLinked to original sources
PubMed2001

Model-independent analysis of muon g(mu) - 2.

We consider possible physics beyond the standard model that could account for the large recently reported [Muon g-2 Collaboration, H. N. Brown et al., Phys. Rev. Lett. 86, 2227 (2001)] effect in g(mu)-2. If the underlying theory can be treated perturbatively, then the only possibilities are models that contain particles that yield "direct" contributions, e.g., supersymmetric models, models with unexpectedly light leptoquarks, or with a rather exotic heavy vector boson. If the underlying theory involves strong interactions, as in technicolor models, then the discrepancy could be accounted for by a variety of mechanisms.

Journal Article↗
PubMed2001

Counting inclusive b jets as an efficient probe of new flavor physics.

We consider the inclusive reaction l(+)l(-)-->nb+X ( n = number of b jets) in lepton colliders for which we propose a useful approximately conserved quantum number b(P) = (-1)(n) that we call b parity ( b(P)). We make the observation that the standard model (SM) is essentially b(P) even since SM b(P)-violating signals are necessarily Cabibbo-Kobayashi-Maskawa suppressed. In contrast new flavor physics can produce b(P) = -1 signals whose only significant SM background is due to b-jet misidentification. Thus, we show that b-jet counting, that relies primarily on b tagging, becomes a very simple and sensitive probe of new flavor physics (i.e., of b(P) violation).

Journal Article↗