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2017-04-24
14:34
OpenAccess [PUBDB-2017-01838] Report/Journal Article
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Flavor mixings in flux compactifications
[DESY-16-238; arXiv:1701.06935] ddc:530
A multiplicity of quark-lepton families can naturally arise as zero-modes in flux compactifications. The flavour structure of quark and lepton mass matrices is then determined by the wave function profiles of the zero-modes. [...]
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2017-04-24
14:32
OpenAccess [PUBDB-2017-01837] Report/Journal Article
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Bootstrapping $\mathcal{N} = 3$ superconformal theories
[DESY-16-237] ddc:530
We initiate the bootstrap program for $\mathcal{N} = 3$ superconformal field theories (SCFTs) in four dimensions. The problem is considered from two fronts: the protected subsector described by a 2d chiral algebra, and crossing symmetry for half-BPS operators whose superconformal primaries parametrize the Coulomb branch of $\mathcal{N} = 3$ theories [...]
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2017-04-24
14:27
OpenAccess [PUBDB-2017-01835] Report/Journal Article
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Effective field theory for magnetic compactifications
[CPHT-RR047.112016; DESY-16-206; arXiv:1611.03798] ddc:530
Magnetic flux plays an important role in compactifications of field and string theories in two ways, it generates a multiplicity of chiral fermion zero modes and it can break supersymmetry. We derive the complete four-dimensional effective action for $\mathcal{N}=1$ supersymmetric Abelian and non-Abelian gauge theories in six dimensions compactified on a torus with flux. [...]
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2017-04-24
14:23
OpenAccess [PUBDB-2017-01833] Report/Journal Article
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Exploring the nearly degenerate stop region with sbottom decays
[DESY-16-101; arXiv:1611.09868; CALT-TH-2016-036] ddc:530
A light stop with mass almost degenerate with the lightest neutralino has important connections with both naturalness and dark matter relic abundance. This region is also very hard to probe at colliders [...]
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2017-04-24
13:00
OpenAccess [PUBDB-2017-01822] Preprint/Report
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Generic calculation of two-body partial decay widths at the full one-loop level
[DESY-17-042; KA-TP-11-2017; arXiv:1703.09237]
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We describe a fully generic implementation of two-body partial decay widths at the full one-loop level in the SARAH and SPheno framework compatible with most supported models. It incorporates fermionic decays to a fermion and a scalar or a gauge boson as well as scalar decays into two fermions, two gauge bosons, two scalars or a scalar and a gauge boson. [...]
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2017-04-24
12:57
OpenAccess [PUBDB-2017-01820] Preprint/Report
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A global view on the Higgs self-coupling
[DESY-17-044; arXiv:1704.01953]
The Higgs self-coupling is notoriously intangible at the LHC. It was recently proposed to probe the trilinear Higgs interaction through its radiative corrections to single-Higgs processes. [...]
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2017-04-24
12:53
OpenAccess [PUBDB-2017-01818] Preprint/Report
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Minimally extended SILH
[DESY-17-049; IFIC-17-15; FTUV-17-0322.9647; arXiv:1703.10624]
Higgs boson compositeness is a phenomenologically viable scenario addressing the hierarchy problem. In minimal models, the Higgs boson is the only degree of freedom of the strong sector below the strong interaction scale. [...]
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2017-04-24
11:36
OpenAccess [PUBDB-2017-01811] Preprint/Report
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Baryonic Higgs at the LHC
[DESY-17-050; arXiv:1704.03811]
We investigate the possible collider signatures of a new Higgs in simple extensions of the Standard Model where baryon number is a local symmetry spontaneously broken at the low scale. We refer to this new Higgs as 'Baryonic Higgs'. [...]
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2017-04-24
11:34
OpenAccess [PUBDB-2017-01810] Preprint/Report
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Factorization and Resummation for Massive Quark Effects in Exclusive Drell-Yan
[DESY-16-199; UWTHPH-2017-3; HU-EP-16-42; arXiv:1703.09702]
Exclusive differential spectra in color-singlet processes at hadron colliders are benchmark observables that have been studied to high precision in theory and experiment. We present an effective-theory framework utilizing soft-collinear effective theory to incorporate massive (bottom) quark effects into resummed differential distributions, accounting for both heavy-quark initiated primary contributions to the hard scattering process as well as secondary effects from gluons splitting into heavy-quark pairs. [...]
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2017-04-24
11:30
OpenAccess [PUBDB-2017-01809] Preprint/Report
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Dark matter self-interactions from a general spin-0 mediator
[DESY-17-052; arXiv:1704.02149]
Dark matter particles interacting via the exchange of very light spin-0 mediators can have large self-interaction rates and obtain their relic abundance from thermal freeze-out. At the same time, these models face strong bounds from direct and indirect probes of dark matter as well as a number of constraints on the properties of the mediator. [...]
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