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As there seems to be a large mass gap between the SM and new physics particles, the EFT framework emerges as the natural approach for the analysis and interpretation of collider data. However, this large gap and the fact that (so far) all…

High Energy Physics - Phenomenology · Physics 2017-10-23 J. J. Sanz-Cillero

The first LHC results at 7-8 TeV, with the discovery of a candidate Higgs boson and the non observation of new particles or exotic phenomena, have made a big step towards completing the experimental confirmation of the Standard Model (SM)…

High Energy Physics - Phenomenology · Physics 2013-11-05 Guido Altarelli

We present an extension of the Standard Model (SM) without supersymmetry, which we use to calculate order of magnitude values for the elements of the mass matrices in the SM. In our model we can fit the 9 quark and lepton masses and 3…

High Energy Physics - Phenomenology · Physics 2009-10-28 C. D. Froggatt , H. B. Nielsen , D. J. Smith

WPHACT (W W and Higgs Physics with PHACT) is a MC program and unweighted event generator which computes all Standard Model processes with four fermion in the final state at $e^+ e^-$ colliders. It is based on an helicity amplitude method…

High Energy Physics - Phenomenology · Physics 2011-01-27 Elena Accomando , Alessandro Ballestrero

Modified theories of gravity that explicitly break diffeomorphism invariance have been used for over a decade to explore open issues related to quantum gravity, dark energy, and dark matter. At the same time, the Standard-Model Extension…

General Relativity and Quantum Cosmology · Physics 2021-04-14 Robert Bluhm , Yumu Yang

The trinification model is an interesting extension of the Standard Model (SM) based on the gauge group $SU(3)_C\times SU(3)_L\times SU(3)_R$. We study its low-energy phenomenology by constructing a low-energy effective field theory,…

High Energy Physics - Phenomenology · Physics 2015-04-28 Jamil Hetzel , Berthold Stech

Fundamental physics today is best defined operationally: it is the program of identifying the microscopic degrees of freedom, symmetries, and dynamical laws that (i) reproduce the Standard Model (SM) of particle physics, General Relativity…

General Relativity and Quantum Cosmology · Physics 2026-05-06 Slava G. Turyshev

We quantize the interaction of gravity with Yang-Mills and spinor fields, hence offering a quantum theory incorporating all four fundamental forces of nature. Let us\ann{as} abbreviate the spatial Hamilton functions of the Standard Model by…

General Relativity and Quantum Cosmology · Physics 2022-08-02 Claus Gerhardt

MARTY is a C++ computer algebra system specialized for High Energy Physics that can calculate amplitudes, squared amplitudes and Wilson coefficients in a large variety of beyond the Standard Model scenarios up to the one-loop order. It is…

High Energy Physics - Phenomenology · Physics 2021-02-24 G. Uhlrich , F. Mahmoudi , A. Arbey

The Standard Model effective field theory (SMEFT) is the tool of choice for studying deviations of Higgs couplings from the Standard Model predictions. The SMEFT is an expansion in an infinite tower of higher dimension operators, which is…

High Energy Physics - Phenomenology · Physics 2023-05-12 Sally Dawson , Duarte Fontes , Samuel Homiller , Matthew Sullivan

This work considers the remarkable suggestion that the three families of quarks and leptons may be unified, together with the Higgs and gauge fields of the Standard Model (SM), into a single "particle", namely the $\textbf{248}$ vector…

High Energy Physics - Phenomenology · Physics 2020-10-12 Alfredo Aranda , Francisco J. de Anda , Stephen F. King

The possibility that the spontaneous symmetry breaking in the Standard Model (SM) may be generated by the Top-Higgs Yukawa interaction (which determines the so called "second minimum" in the SM) is examined. A former analysis is extended…

High Energy Physics - Phenomenology · Physics 2018-06-20 Alejandro Cabo , Jose Carlos Suarez , Denys Arrebato , Fernando Guzman , Jorge Luis Acosta

To obtain a first order phase transition requires large new physics corrections to the Standard Model (SM) Higgs potential. This implies that the scale of new physics is relatively low, raising the question whether an effective field theory…

High Energy Physics - Phenomenology · Physics 2021-04-14 Marieke Postma , Graham White

The Standard Model may be included within a supersymmetric theory, postulating new sparticles that differ by half-a-unit of spin from their standard model partners, and by a new quantum number called R-parity. The lightest one, usually a…

High Energy Physics - Phenomenology · Physics 2016-10-12 Pierre Fayet

Tremendous phenomenological success of the Standard Model (SM) suggests that its flavor structure and gauge interactions may not be arbitrary but should have a fundamental first-principle explanation. In this work, we explore how the basic…

High Energy Physics - Phenomenology · Physics 2022-01-13 António P. Morais , Roman Pasechnik , Werner Porod

Conventional approaches to describe dark matter phenomenology at collider and (in)direct detection experiments in the form of dark matter effective field theory or simplified models suffer in general from drawbacks regarding validity at…

High Energy Physics - Phenomenology · Physics 2018-03-23 Tommi Alanne , Florian Goertz

The Standard Model of Particle Physics (SMPP) is an enormously successful description of high energy physics, driving ever more precise measurements to find "physics beyond the standard model", as well as providing motivation for developing…

Astrophysics · Physics 2015-06-24 Douglas Scott

We present an effective field theory describing the relevant interactions of the Standard Model with an electrically neutral particle that can account for the dark matter in the Universe. The possible mediators of these interactions are…

High Energy Physics - Phenomenology · Physics 2025-02-04 Juan Carlos Criado , Abdelhak Djouadi , Manuel Perez-Victoria , Jose Santiago

The decay out-states of unstable Standard Model (SM) particles provide a unique, well-defined intrinsic quantum-information probe of the SM parameter space. We use Higgs decays as a test case: after tracing out kinematics, we compute…

High Energy Physics - Phenomenology · Physics 2025-11-24 Jia Liu , Masanori Tanaka , Xiao-Ping Wang , Jing-Jun Zhang , Zifan Zheng

In this paper it will be shown that the Standard Model in 3+1 dimensions is a gauge fixed version of a 2T-physics field theory in 4+2 dimensions, thus establishing that 2T-physics provides a correct description of Nature from the point of…

High Energy Physics - Theory · Physics 2008-11-26 Itzhak Bars