M. Beneke
Effective theory approach to unstable particle production
Beneke, M.; Chapovsky, A.P.; Signer, A.; Zanderighi, G.
Authors
A.P. Chapovsky
A. Signer
G. Zanderighi
Abstract
Using the hierarchy of scales between the mass M and the width Gamma of a heavy, unstable particle, we construct an effective theory that allows calculations for resonant processes to be systematically expanded in powers of the coupling alpha and Gamma/M. We illustrate the method by computing the next-to-leading order line shape of a scalar resonance in an Abelian gauge-Yukawa model.
Citation
Beneke, M., Chapovsky, A., Signer, A., & Zanderighi, G. (2004). Effective theory approach to unstable particle production. Physical Review Letters, 93, https://doi.org/10.1103/physrevlett.93.011602
Journal Article Type | Article |
---|---|
Publication Date | 2004-07 |
Deposit Date | Apr 28, 2008 |
Publicly Available Date | Apr 28, 2008 |
Journal | Physical Review Letters |
Print ISSN | 0031-9007 |
Electronic ISSN | 1079-7114 |
Publisher | American Physical Society |
Peer Reviewed | Peer Reviewed |
Volume | 93 |
DOI | https://doi.org/10.1103/physrevlett.93.011602 |
Keywords | Effective field-theory, Gauge-invariance, Heavy quarks. |
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