Standard Model anomalies in curved space-time with torsion
Sep, 199544 pages
Published in:
- Phys.Rev.D 54 (1996) 5185-5194
e-Print:
- hep-ph/9509227 [hep-ph]
Report number:
- FT-UCM-8-95
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Abstract:
Using the Fujikawa and the heat-kernel methods we make a complete and detailed computation of the global, gauge and gravitational anomalies present in the Standard Model defined on a curved space time with torsion. We find new contributions coming from curvature and torsion terms to the leptonic number anomaly (so that is not conserved any more), to the gauge and to the mixed -gravitational anomalies, but the gauge anomaly cancellation conditions on the hypercharges remain the same. We also find that the condition, usually related to the cancellation of the mixed -gravitational anomaly, can be reobtained in the context of the Standard Model in flat space-time by requiring the cancellation of the global Lorentz anomaly without any reference to gravitation.- 11.30.Fs
- 04.62.+v
- electroweak interaction
- anomaly: gauge
- anomaly: gravitation
- hypercharge
- space-time: torsion
- expansion: heat kernel
- baryon: anomaly
- lepton: anomaly
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