Zobrazeno 1 - 10
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pro vyhledávání: '"MARTIN, STEPHEN"'
Autor:
Martin, Stephen P.
A higgsino could be some or all of the dark matter, with a mass bounded from above by about 1.1 TeV assuming a thermal freezeout density, and from below by collider searches. Direct detection experiments imply purity constraints on a dark matter higg
Externí odkaz:
http://arxiv.org/abs/2412.08958
Autor:
Martin, Stephen P.
I obtain the effective K\"ahler potential at three-loop order for a general renormalizable supersymmetric theory containing only chiral supermultiplets. The three-loop contribution is remarkably simple, consisting of only four terms involving three d
Externí odkaz:
http://arxiv.org/abs/2408.04589
Autor:
Martin, Stephen P.
The lightest supersymmetric particles could be higgsinos that have a small mixing with gauginos. If the lightest higgsino-like state makes up some or all of the dark matter with a thermal freezeout density, then its mass must be between about 100 and
Externí odkaz:
http://arxiv.org/abs/2403.19598
Autor:
Martin, Stephen P.
The effective potential has been previously calculated through three-loop order, in Landau gauge, for a general renormalizable theory using dimensional regularization. However, dimensional regularization is not appropriate for softly broken supersymm
Externí odkaz:
http://arxiv.org/abs/2311.09372
We study weak isosinglet vectorlike leptons that decay through a small mixing with the tau lepton, for which the discovery and exclusion reaches of the Large Hadron Collider and future proposed hadron colliders are limited. We show how an $e^+ e^-$ c
Externí odkaz:
http://arxiv.org/abs/2308.08386
Autor:
Martin, Stephen P.
I obtain identities satisfied by the 3-loop self-energy master integrals with four or five propagators with generic masses, including the derivatives with respect to each of the squared masses and the external momentum invariant. These identities are
Externí odkaz:
http://arxiv.org/abs/2211.16539
Autor:
Alam, Zamiul, Martin, Stephen P.
The Standard Model can be defined quantitatively by running parameters in a mass-independent renormalization scheme at a fixed reference scale. We provide a set of simple interpolation formulas that give the fundamental Lagrangian parameters in the $
Externí odkaz:
http://arxiv.org/abs/2211.08576