Weak Decay of Magnetized Pions

Bali G S, Brandt B B, Endrödi G, Gläßle B (2018)
Physical Review Letters 121(7): 072001.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Bali, G. S.; Brandt, B. B.; Endrödi, GergelyUniBi; Gläßle, B.
Abstract / Bemerkung
The leptonic decay of charged pions is investigated in the presence of background magnetic fields. In this situation, Lorentz symmetry is broken, and new fundamental decay constants need to be introduced, associated with the decay via the vector part of the electroweak current. We calculate the magnetic field dependence of both the usual and a new decay constant nonperturbatively on the lattice. We employ both Wilson and staggered quarks and extrapolate the results to the continuum limit. With this nonperturbative input, we calculate the tree level electroweak amplitude for the full decay rate in strong magnetic fields. We find that the muonic decay of the charged pion is enhanced drastically by the magnetic field. We comment on possible astrophysical implications.
Erscheinungsjahr
2018
Zeitschriftentitel
Physical Review Letters
Band
121
Ausgabe
7
Art.-Nr.
072001
ISSN
0031-9007
eISSN
1079-7114
Page URI
https://pub.uni-bielefeld.de/record/2955726

Zitieren

Bali G S, Brandt B B, Endrödi G, Gläßle B. Weak Decay of Magnetized Pions. Physical Review Letters. 2018;121(7): 072001.
Bali, G.  S., Brandt, B.  B., Endrödi, G., & Gläßle, B. (2018). Weak Decay of Magnetized Pions. Physical Review Letters, 121(7), 072001. https://doi.org/10.1103/PhysRevLett.121.072001
Bali, G.  S., Brandt, B.  B., Endrödi, G., and Gläßle, B. (2018). Weak Decay of Magnetized Pions. Physical Review Letters 121:072001.
Bali, G. S., et al., 2018. Weak Decay of Magnetized Pions. Physical Review Letters, 121(7): 072001.
G. S. Bali, et al., “Weak Decay of Magnetized Pions”, Physical Review Letters, vol. 121, 2018, : 072001.
Bali, G. S., Brandt, B. B., Endrödi, G., Gläßle, B.: Weak Decay of Magnetized Pions. Physical Review Letters. 121, : 072001 (2018).
Bali, G. S., Brandt, B. B., Endrödi, Gergely, and Gläßle, B. “Weak Decay of Magnetized Pions”. Physical Review Letters 121.7 (2018): 072001.

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