The muon g-2 discrepancy: errors or new physics?
- Istituto Nazionale Fisica Nucleare, Sezione di Padova, I-35131, Padova (Italy)
- Brookhaven National Laboratory, Upton, New York 11973 (United States)
- Department of Physics, New York University, 10003 New York NY (United States)
After a brief review of the muon g-2 status, we discuss hypothetical errors in the Standard Model prediction that could explain the present discrepancy with the experimental value. None of them looks likely. In particular, an hypothetical increase of the hadroproduction cross section in low-energy e{sup +}e{sup -} collisions could bridge the muon g-2 discrepancy, but is shown to be unlikely in view of current experimental error estimates. If, nonetheless, this turns out to be the explanation of the discrepancy, then the 95% CL upper bound on the Higgs boson mass is reduced to about 130 GeV which, in conjunction with the experimental 114.4 GeV 95% CL lower bound, leaves a narrow window for the mass of this fundamental particle.
- OSTI ID:
- 21255058
- Journal Information:
- AIP Conference Proceedings, Vol. 1078, Issue 1; Conference: SUSY08: 16. international conference on supersymmetry and the unification of fundamental interactions, Seoul (Korea, Republic of), 16-21 Jun 2008; Other Information: DOI: 10.1063/1.3051967; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Muon and connection
Lowest order hadronic contribution to the muon {ital g}{minus}2 value with systematic error correlations