Built on

C. Cheung, J. Liu, and G. N. Remmen, “Entropy Bounds on Effective Field Theory from Rotating Dyonic Black Holes,” Phys. Rev
Original
1903
Earlier work this paper cites.
C. Englert, G. F. Giudice, A. Greljo, and M. McCullough, “The H ^ \hat{H} -Parameter: An Oblique Higgs View,” JHEP
Original
1903
Earlier work this paper cites.
G. N. Remmen and N. L. Rodd, “Consistency of the Standard Model Effective Field Theory,” JHEP
Original
1908
Earlier work this paper cites.
M. Bordone, O. Catà , and T. Feldmann, “Effective Theory Approach to New Physics with Flavour: General Framework and a Leptoquark Example,” JHEP
Original
1910
Earlier work this paper cites.
E. Eichten, K. D. Lane, and M. E. Peskin, “New Tests for Quark and Lepton Substructure,” Phys. Rev. Lett
1983
Earlier work this paper cites.
T. N. Pham and T. N. Truong, “Evaluation of the derivative quartic terms of the meson chiral Lagrangian from forward dispersion relations,” Phys. Rev
1985
Earlier work this paper cites.
R. S. Chivukula and H. Georgi, “Composite Technicolor Standard Model,” Phys. Lett
1987
Earlier work this paper cites.
L. J. Hall and L. Randall, “Weak scale effective supersymmetry,” Phys. Rev. Lett
1990
Earlier work this paper cites.
B. Ananthanarayan, D. Toublan, and G. Wanders, “Consistency of the chiral pion-pion scattering amplitudes with axiomatic constraints,” Phys. Rev
1995
Earlier work this paper cites.
M. R. Pennington and J. Portoles, “The chiral lagrangian parameters, ℓ 1 \ell_{1} , ℓ 2 \ell_{2} , are determined by the ρ \rho -resonance,” Phys. Lett
1995
Earlier work this paper cites.
M. Ramana and A. J. Goldman, “Some geometric results in semidefinite programming,” J. Global Optim
1995
Earlier work this paper cites.
S. Cullen, M. Perelstein, and M. E. Peskin, “TeV strings and collider probes of large extra dimensions,” Phys. Rev
2000
Earlier work this paper cites.
A. Delgado, A. Pomarol, and M. Quiros, “Electroweak and flavor physics in extensions of the standard model with large extra dimensions,” JHEP
2000
Earlier work this paper cites.
G. D’Ambrosio, G. F. Giudice, G. Isidori, and A. Strumia, “Minimal flavor violation: an effective field theory approach,” Nucl. Phys
2002
Earlier work this paper cites.
S. Alioli, R. Boughezal, E. Mereghetti, and F. Petriello, “Novel angular dependence in Drell-Yan lepton production via dimension-8 operators,” arXiv:2003.11615 [hep-ph]
Original
2003
Earlier work this paper cites.

Similar

J. Fuentes-Martín, A. Greljo, J. Martin Camalich, and J. D. Ruiz-Alvarez, “Charm Physics Confronts High- p T p_{T} Lepton Tails,” arXiv:2003.12421 [hep-ph]
Original
2003
Cited alongside, same era.
A. Adams, N. Arkani-Hamed, S. Dubovsky, A. Nicolis, and R. Rattazzi, “Causality, analyticity and an IR obstruction to UV completion,” JHEP
2006
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P. J. Fox, Z. Ligeti, M. Papucci, G. Perez, and M. D. Schwartz, “Deciphering top flavor violation at the LHC with B B factories,” Phys. Rev
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2008
Cited alongside, same era.
B. Grzadkowski, M. Iskrzynski, M. Misiak, and J. Rosiek, “Dimension-Six Terms in the Standard Model Lagrangian,” JHEP
Original
2010
Cited alongside, same era.
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Then

A. Falkowski and K. Mimouni, “Model independent constraints on four-lepton operators,” JHEP
Original
2016
Later among the works it cites.
I. Doršner, S. Fajfer, A. Greljo, J. F. Kamenik, and N. Košnik, “Physics of leptoquarks in precision experiments and at particle colliders,” Phys. Rept
Original
2016
Later among the works it cites.
C. Zhang, “Single Top Production at Next-to-Leading Order in the Standard Model Effective Field Theory,” Phys. Rev. Lett
Original
2016
Later among the works it cites.
B. Bellazzini, “Softness and amplitudes’ positivity for spinning particles,” JHEP
Original
2017
Later among the works it cites.
A. Greljo and D. Marzocca, “High- p T p_{T} dilepton tails and flavor physics,” Eur. Phys. J

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2020

Flavor Constraints from Unitarity and Analyticity

Remmen, Grant N., Rodd, Nicholas L.

Understand

We use unitarity and analyticity of scattering amplitudes to constrain fermionic operators in the standard model effective field theory.

For four-fermion operators at mass dimension 8, we scatter flavor superpositions in fixed standard model representations and find the Wilson coefficients to be constrained so that their contraction with any pair of pure density matrices is positive.
These constraints imply that flavor-violating couplings are upper-bounded by their flavor-conserving cousins.
For instance, LEP data already appears to preclude certain operators in upcoming $\mu \to 3e$ measurements.

Built on

C. Cheung, J. Liu, and G. N. Remmen, “Entropy Bounds on Effective Field Theory from Rotating Dyonic Black Holes,” Phys. Rev
Original
1903
Earlier work this paper cites.
C. Englert, G. F. Giudice, A. Greljo, and M. McCullough, “The H ^ \hat{H} -Parameter: An Oblique Higgs View,” JHEP
Original
1903
Earlier work this paper cites.
G. N. Remmen and N. L. Rodd, “Consistency of the Standard Model Effective Field Theory,” JHEP
Original
1908
Earlier work this paper cites.
M. Bordone, O. Catà , and T. Feldmann, “Effective Theory Approach to New Physics with Flavour: General Framework and a Leptoquark Example,” JHEP
Original
1910
Earlier work this paper cites.
E. Eichten, K. D. Lane, and M. E. Peskin, “New Tests for Quark and Lepton Substructure,” Phys. Rev. Lett
1983
Earlier work this paper cites.
T. N. Pham and T. N. Truong, “Evaluation of the derivative quartic terms of the meson chiral Lagrangian from forward dispersion relations,” Phys. Rev
1985
Earlier work this paper cites.
R. S. Chivukula and H. Georgi, “Composite Technicolor Standard Model,” Phys. Lett
1987
Earlier work this paper cites.
L. J. Hall and L. Randall, “Weak scale effective supersymmetry,” Phys. Rev. Lett
1990
Earlier work this paper cites.
B. Ananthanarayan, D. Toublan, and G. Wanders, “Consistency of the chiral pion-pion scattering amplitudes with axiomatic constraints,” Phys. Rev
1995
Earlier work this paper cites.
M. R. Pennington and J. Portoles, “The chiral lagrangian parameters, ℓ 1 \ell_{1} , ℓ 2 \ell_{2} , are determined by the ρ \rho -resonance,” Phys. Lett
1995
Earlier work this paper cites.
M. Ramana and A. J. Goldman, “Some geometric results in semidefinite programming,” J. Global Optim
1995
Earlier work this paper cites.
S. Cullen, M. Perelstein, and M. E. Peskin, “TeV strings and collider probes of large extra dimensions,” Phys. Rev
2000
Earlier work this paper cites.
A. Delgado, A. Pomarol, and M. Quiros, “Electroweak and flavor physics in extensions of the standard model with large extra dimensions,” JHEP
2000
Earlier work this paper cites.
G. D’Ambrosio, G. F. Giudice, G. Isidori, and A. Strumia, “Minimal flavor violation: an effective field theory approach,” Nucl. Phys
2002
Earlier work this paper cites.
S. Alioli, R. Boughezal, E. Mereghetti, and F. Petriello, “Novel angular dependence in Drell-Yan lepton production via dimension-8 operators,” arXiv:2003.11615 [hep-ph]
Original
2003
Earlier work this paper cites.