scholarly journals Dark matter with flavor symmetry and its collider signature

2015 ◽  
Vol 740 ◽  
pp. 80-82 ◽  
Author(s):  
Ernest Ma ◽  
Alexander Natale
Keyword(s):  
Dark Matter ◽  
Flavor Symmetry ◽  
Collider Signature

scholarly journals Exothermic dark mesons in light of electron recoil excess at XENON1T

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Soo-Min Choi ◽  
Hyun Min Lee ◽  
Bin Zhu
Keyword(s):  
Dark Matter ◽  
Inelastic Scattering ◽  
Small Mass ◽  
Density Current ◽  
Flavor Symmetry ◽  
Color Group ◽  
Dark Sector ◽  
The Standard Model ◽  
Electron Recoil ◽  
Relic Density

Abstract We consider a novel mechanism to realize exothermic dark matter with dark mesons in the limit of approximate flavor symmetry in a dark QCD. We introduce a local dark U(1)′ symmetry to communicate between dark mesons and the Standard Model via Z′ portal by partially gauging the dark flavor symmetry with flavor-dependent charges for cancelling chiral anomalies in the dark sector. After the dark local U(1)′ is broken spontaneously by the VEV of a dark Higgs, there appear small mass splittings between dark quarks, consequently, leading to small split masses for dark mesons, required to explain the electron recoil excess in XENON1T by the inelastic scattering between dark mesons and electron. We propose a concrete benchmark model for split dark mesons based on SU(3)L× SU(3)R/SU(3)V flavor symmetry and SU(Nc) color group and show that there exists a parameter space making a better fit to the XENON1T data with two correlated peaks from exothermic processes and satisfying the correct relic density, current experimental and theoretical constraints.

scholarly journals Dark matter interactions in an S4×Z5 flavor symmetry framework

2020 ◽  
Vol 102 (11) ◽  
Author(s):  
Giorgio Arcadi ◽  
Martin B. Krauss ◽  
Davide Meloni
Keyword(s):  
Dark Matter ◽  
Flavor Symmetry

scholarly journals Dark matter from binary tetrahedral flavor symmetry

2012 ◽  
Vol 713 (3) ◽  
pp. 249-254 ◽  
Author(s):  
David A. Eby ◽  
Paul H. Frampton
Keyword(s):  
Dark Matter ◽  
Flavor Symmetry

INVESTIGATIONS OF THE FLAVOR SYMMETRY, RADIATIVE SEESAW MODEL AND COLD DARK MATTER

2007 ◽  
Vol 16 (05) ◽  
pp. 1541-1556
Author(s):  
HIROSHI OKADA
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Vacuum Expectation ◽  
The Other ◽  
Type Model ◽  
Flavor Symmetry ◽  
Heavy Particles ◽  
Neutrino Sector ◽  
Seesaw Model ◽  
The Masses

It is now clear that the masses of the neutrino sector are much lighter than those of the other three sectors. Canonial seesaw model would be the most famous for the above explanation. But one must introduce heavy particles that will not be able to observed with present scientific technologies. On the other hand, there are many attempts to explain the neutrino masses radiatively by means of inert Higgses, which do not have the vacuum expectation values. Then one can discuss cold dark matter candidates, because of no needing so heavy particles. The most famous work would be the Zee model17. Recently a new type model (hep-ph/0601225)4 along this line of thought was proposed by E. Ma. We adopted this idea, and then we introduced a new flavor symmetry to constrain the Yukawa sector. So our model might be more predictive, and can be investigated at LHC. I will present how we can obserb the particular signal at LHC, and what we can predict about the neutrino sector.

scholarly journals CP violation from flavor symmetry in a lepton quarticity dark matter model

2016 ◽  
Vol 761 ◽  
pp. 431-436 ◽  
Author(s):  
Salvador Centelles Chuliá ◽  
Rahul Srivastava ◽  
José W.F. Valle
Keyword(s):  
Dark Matter ◽  
Cp Violation ◽  
Flavor Symmetry ◽  
Matter Model ◽  
Dark Matter Model

scholarly journals A hybrid seesaw model and hierarchical neutrino flavor structures based on A4 symmetry

2021 ◽  
Author(s):  
Mayumi Aoki ◽  
Daiki Kaneko
Keyword(s):  
Dark Matter ◽  
Neutrino Mass ◽  
Mass Matrix ◽  
Hierarchical Structures ◽  
Double Beta Decay ◽  
Tree Level ◽  
Dark Matter Candidate ◽  
Flavor Symmetry ◽  
Seesaw Model ◽  
Majorana Phases

Abstract We propose a hybrid seesaw model based on A4 flavor symmetry, which generates a large hierarchical flavor structure. In our model, tree-level and one-loop seesaw mechanisms predict different flavor structures in the neutrino mass matrix, and generate a notable hierarchy among them. We find that such a hierarchical structure gives a large effective neutrino mass which can be accessible by next-generation neutrinoless double beta decay experiments. Majorana phases can also be predictable. The A4 flavor symmetry in the model is spontaneously broken to the Z2 symmetry, leading to a dark matter candidate which is assumed to be a neutral scalar field. The favored mass region of the dark matter is obtained by numerical computations of the relic abundance and the cross section of the nucleon. We also investigate the predictions of the several hierarchical flavor structures based on A4 symmetry for the effective neutrino mass and the Majorana phases, and find the characteristic features depending on the hierarchical structures.

scholarly journals Composite Dark Matter and a horizontal symmetry

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Alexandre Carvunis ◽  
Diego Guadagnoli ◽  
Méril Reboud ◽  
Peter Stangl
Keyword(s):  
Dark Matter ◽  
Gauge Symmetry ◽  
Standard Model ◽  
Mass Scale ◽  
Flavor Symmetry ◽  
Gauge Bosons ◽  
Weakly Coupled ◽  
Horizontal Symmetry ◽  
The Standard Model ◽  
The One

Abstract We present a model of composite Dark Matter (DM), in which a new QCD-like confining “hypercolor” sector generates naturally stable hyperbaryons as DM candidates and at the same time provides mass to new weakly coupled gauge bosons H that serve as DM mediators, coupling the hyperbaryons to the Standard Model (SM) fermions. By an appropriate choice of the H gauge symmetry as a horizontal SU(2)h SM flavor symmetry, we show how the H gauge bosons can be identified with the horizontal gauge bosons recently put forward as an explanation for discrepancies in rare B-meson decays. We find that the mass scale of the H gauge bosons suggested by the DM phenomenology intriguingly agrees with the one needed to explain the rare B-decay discrepancies.

TOP WINDOW FOR DARK MATTER

2011 ◽  
Vol 20 (08) ◽  
pp. 1413-1421 ◽  
Author(s):  
K. CHEUNG ◽  
K. MAWATARI ◽  
E. SENAHA ◽  
P.-Y. TSENG ◽  
T.-C. YUAN
Keyword(s):  
Dark Matter ◽  
Large Hadron Collider ◽  
Top Quark ◽  
Hadron Collider ◽  
Lagrangian Approach ◽  
Effective Lagrangian ◽  
Collider Signature

We consider a scenario in which a dark matter can couple only to the top quark. The analysis is conducted by using the effective Lagrangian approach. In the light of the latest data on dark matter, we obtain a maximally allowed magnitude of the coupling between the dark matter and the top quark. The collider signature at the Large Hadron Collider is also discussed.

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