Results 61 to 70 of about 4,163,262 (181)
Road map through the desert: unification with vector-like fermions
Journal of High Energy Physics, 2019 In light of null results from New Physics searches at the LHC, we look at unification of the gauge couplings as a model-building principle. As a first step, we consider extensions of the Standard Model with vector-like fermions.
Kamila Kowalska, Dinesh Kumar
doaj +1 more source
Threshold resummation for dark-matter production at the LHC
Journal of High Energy Physics, 2019 We derive precision predictions for the production of dark-matter particles recoiling against a jet with large transverse momentum at the LHC. The dark-matter fermions are described within a simplified model and couple to the Standard Model via a vector ...
M. Krämer +3 more
doaj +1 more source
Gravitational wave and CMB probes of axion kination
Journal of High Energy Physics, 2022 Rotations of an axion field in field space provide a natural origin for an era of kination domination, where the energy density is dominated by the kinetic term of the axion field, preceded by an early era of matter domination.
Raymond T. Co +6 more
doaj +1 more source
Running of fermion observables in non-supersymmetric SO(10) models
Journal of High Energy Physics, 2018 We investigate the complete renormalization group running of fermion observables in two different realistic non-supersymmetric models based on the gauge group SO(10) with intermediate symmetry breaking for both normal and inverted neutrino mass orderings.
Tommy Ohlsson, Marcus Pernow
doaj +1 more source
Same sign trilepton as signature of charged Higgs in two Higgs doublet model
Journal of High Energy Physics, 2022 We explored the prospect of looking for a fermiophobic charged Higgs (H ±) via the same sign trilepton signal at the LHC. A fermiophobic scenario appears in the type-I two Higgs doublet model where the coupling of the H ± with the Standard Model fermions
Tanmoy Mondal, Prasenjit Sanyal
doaj +1 more source
Hadron collider sensitivity to fat flavourful Z ′s for R K ∗ $$ {R}_{K^{\left(\ast \right)}} $$
Journal of High Energy Physics, 2019 We further investigate the case where new physics in the form of a massive Z ′ particle explains apparent measurements of lepton flavour non-universality in B → K (*) l + l − decays.
B. C. Allanach +3 more
doaj +1 more source
Charm mixing in the Standard Model and beyond [PDF]
, 2006 The motivation most often cited in searches for D0-anti-D0 mixing and CP-violation in charm system lies with the possibility of observing a signal from New Physics which dominates that from the Standard Model. We review recent theoretical predictions and
ALEXEY A. PETROV, Yao W. M.
core +3 more sources
Recent Developments in Physics Beyond the Standard Model [PDF]
, 1999 In this talk I discuss some recent developments in physics beyond the Standard Model. After some initial comments on neutrino masses, I discuss the status of low-energy supersymmetry and finally turn to describing some recent work in theories with extra ...
Giudice, G. F.
core +3 more sources
Families from supergroups and predictions for leptonic CP violation
Journal of High Energy Physics, 2017 As was shown in 1984 by Caneschi, Farrar, and Schwimmer, decomposing representations of the supergroup SU(M |N ), can give interesting anomaly-free sets of fermion representations of SU(M ) × SU(N ) × U(1).
S. M. Barr, Heng-Yu Chen
doaj +1 more source
Structure beyond the Standard Model
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2001 We discuss ideas for extending present theory of strong, weak and electromagnetic interactions. String theory offers the hope that there is a fully unified theory of the fundamental interactions, including gravity. Such a ‘top–down’ approach is confronted with the ‘bottom–up’ approach, using current precision measurement to infer structure beyond the ...
openaire +2 more sources