Results 21 to 30 of about 147,304 (226)
Natural split mechanism for sfermions: N= 2 supersymmetry in phenomenology [PDF]
, 2016 Yasuhiro Shimizu, Wen Yin
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A Note on Modular Invariant Species Scale and Potentials
Fortschritte der Physik, Volume 71, Issue 10-11, November 2023., 2023 Abstract The species scale provides an upper bound for the ultraviolet cutoff of effective theories of gravity coupled to a number of light particle species. Modular invariant (super‐)potentials provide a simple and computable expression of the species scale as a function of the moduli in toroidal orbifold compactifications of type II and heterotic ...
Niccolò Cribiori, Dieter Lüst
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Hidden Sectors from Multiple Line Bundles for the B−L$B-L$ MSSM
Fortschritte der Physik, Volume 70, Issue 7-8, August 2022., 2022 Abstract We give a formalism for constructing hidden sector bundles as extensions of sums of line bundles in heterotic M‐theory. Although this construction is generic, we present it within the context of the specific Schoen threefold that leads to the physically realistic B−L$B-L$ MSSM model.
Anthony Ashmore +2 more
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Who's Afraid of the Supersymmetric Dark? The Standard Model vs Low‐Energy Supergravity
Fortschritte der Physik, Volume 70, Issue 7-8, August 2022., 2022 Abstract Use of supergravity equations in astronomy and late‐universe cosmology is often criticized on three grounds: (i) phenomenological success usually depends on the supergravity form for the scalar potential applying at the relevant energies; (ii$ii$) the low‐energy scalar potential is extremely sensitive to quantum effects involving very massive ...
C.P. Burgess, F. Quevedo
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Evolving Heterotic Gauge Backgrounds: Genetic Algorithms versus Reinforcement Learning
Fortschritte der Physik, Volume 70, Issue 5, May 2022., 2022 Abstract The immensity of the string landscape and the difficulty of identifying solutions that match the observed features of particle physics have raised serious questions about the predictive power of string theory. Modern methods of optimisation and search can, however, significantly improve the prospects of constructing the standard model in ...
Steven Abel +3 more
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Selected problems of supersymmetry phenomenology
, 2001 M.I. Vysotskii, R.B. Nevzorov
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Unparticle physics and supersymmetry phenomenology [PDF]
, 2007 We show a natural form of the interaction between the unparticle and supersymmetry. Using the couplings of the unparticle to supersymmetry presented, as examples, we calculate the differential decay rates for the processes $\stackrel{\texttildelow{}}{f ...
Hao Y. Zhang, Chong-Sheng Li, Z. Li
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Quintessence and the Swampland: The Numerically Controlled Regime of Moduli Space
Fortschritte der Physik, Volume 70, Issue 4, April 2022., 2022 Abstract We provide a detailed discussion of the main theoretical and phenomenological challenges of quintessence model building in any numerically controlled regime of the moduli space of string theory. We argue that a working quintessence model requires a leading order non‐supersymmetric (near) Minkowski vacuum with an axionic flat direction.
Michele Cicoli +3 more
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Quintessence and the Swampland: The Parametrically Controlled Regime of Moduli Space
Fortschritte der Physik, Volume 70, Issue 4, April 2022., 2022 Abstract We provide evidence that slow roll is not possible in any parametrically controlled regime of the moduli space of string theory. This is proven in full generality in the asymptotic limit of the moduli space of type II and heterotic Calabi‐Yau compactifications for the dilaton and any number of Kähler moduli.
Michele Cicoli +3 more
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Discovery and Exclusion Prospects for Staus Produced by Heavy Higgs Boson Decays at the LHC
Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022 In a previous work, we developed a search strategy for staus produced by the decay of the heavy CP‐even Higgs boson H within the context of the large tanβ regime of the minimal supersymmetric standard model (MSSM) in a scenario of large stau mixing. Here, we study the performance of such search strategy by confronting it with the complementary mixing ...
Ernesto Arganda +4 more
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