scholarly journals Quark-lepton connections in Z′ mediated FCNC processes: gauge anomaly cancellations at work

2020 ◽  
Vol 2020 (2) ◽  
Author(s):  
Jason Aebischer ◽  
Andrzej J. Buras ◽  
Maria Cerdà-Sevilla ◽  
Fulvia De Fazio
Keyword(s):  
2001 ◽  
Vol 596 (1-2) ◽  
pp. 315-347 ◽  
Author(s):  
S.James Gates ◽  
Marcus T. Grisaru ◽  
Marcia E. Knutt ◽  
Silvia Penati ◽  
Hiroshi Suzuki

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Ferruccio Feruglio

Abstract The conditions for the absence of gauge anomalies in effective field theories (EFT) are rivisited. General results from the cohomology of the BRST operator do not prevent potential anomalies arising from the non-renormalizable sector, when the gauge group is not semi-simple, like in the Standard Model EFT (SMEFT). By considering a simple explicit model that mimics the SMEFT properties, we compute the anomaly in the regularized theory, including a complete set of dimension six operators. We show that the dependence of the anomaly on the non-renormalizable part can be removed by adding a local counterterm to the theory. As a result the condition for gauge anomaly cancellation is completely controlled by the charge assignment of the fermion sector, as in the renormalizable theory.


2019 ◽  
Vol 34 (33) ◽  
pp. 1950230
Author(s):  
Stephen L. Adler

In earlier work we analyzed an abelianized model in which a gauged Rarita–Schwinger spin-[Formula: see text] field is directly coupled to a spin-[Formula: see text] field. Here, we extend this analysis to the gauged [Formula: see text] model for which the abelianized model was a simplified substitute. We calculate the gauge anomaly, show that anomaly cancellation requires adding an additional left chiral representation [Formula: see text] spin-[Formula: see text] fermion to the original fermion complement of the [Formula: see text] model, and give options for restoring boson–fermion balance. We conclude with a summary of attractive features of the reformulated [Formula: see text] model, including a possible connection to the [Formula: see text] root lattice.


1999 ◽  
Vol 457 (4) ◽  
pp. 291-298 ◽  
Author(s):  
Yoshihisa Ohshima ◽  
Kiyoshi Okuyama ◽  
Hiroshi Suzuki ◽  
Hirofumi Yasuta

1988 ◽  
Vol 38 (6) ◽  
pp. 1880-1887 ◽  
Author(s):  
Huazhong Zhang ◽  
Susumu Okubo

1989 ◽  
Vol 219 (4) ◽  
pp. 464-468
Author(s):  
P. Altevogt ◽  
R. Kaiser

1994 ◽  
Vol 09 (02) ◽  
pp. 161-167 ◽  
Author(s):  
C.M. HULL

The gauging of isometries in general sigma-models which include fermionic terms which represent the interaction of strings with background Yang-Mills fields is considered. Gauging is possible only if certain obstructions are absent. The quantum gauge anomaly is discussed, and then the (1, 0) supersymmetric generalization of the gauge action given.


1985 ◽  
Vol 55 (9) ◽  
pp. 927-930 ◽  
Author(s):  
A. J. Niemi ◽  
G. W. Semenoff
Keyword(s):  

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