Origins of the isospin violation of dark matter interactions
Abstract
Light dark matter (DM) with a large DM-nucleon spin-independent scattering cross section and moreover proper isospin violation (ISV) f{sub n}/f{sub p} ≈ −0.7 may provide a way to understand the confusing DM direct detection results. Further using the stringent astrophysical and collider constraints, we systematically investigate the origin of ISV first via general operator analyses and further via specifying three types of mediators: a light Z' from chiral U(1){sub X}, an approximate spectator Higgs doublet (It can explain the W+jj anomaly simultaneously) and color triplets. In addition, although Z' from an exotic U(1){sub X} mixing with U(1){sub Y} generates only f{sub n} = 0, we can combine it with the conventional Higgs to achieve the proper ISV. As a concrete example, we propose the U(1){sub X} model where the U(1){sub X} charged light sneutrino is an inelastic DM, which dominantly annihilates to light dark states such as Z' with sub-GeV mass. The model can consistently (with other DM direct detection results) and safely interpret the recent GoGeNT annual modulation result.
- Authors:
-
- Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190 (China)
- Publication Date:
- OSTI Identifier:
- 22279613
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Cosmology and Astroparticle Physics
- Additional Journal Information:
- Journal Volume: 2013; Journal Issue: 01; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; APPROXIMATIONS; ASTROPHYSICS; CHIRALITY; COLOR MODEL; COSMOLOGY; CROSS SECTIONS; GEV RANGE; HIGGS BOSONS; HIGGS MODEL; ISOSPIN; MASS; NONLUMINOUS MATTER; NUCLEONS; SPIN; TRIPLETS; U-1 GROUPS; VISIBLE RADIATION
Citation Formats
Gao, Xin, Kang, Zhaofeng, and Li, Tianjun. Origins of the isospin violation of dark matter interactions. United States: N. p., 2013.
Web. doi:10.1088/1475-7516/2013/01/021.
Gao, Xin, Kang, Zhaofeng, & Li, Tianjun. Origins of the isospin violation of dark matter interactions. United States. https://doi.org/10.1088/1475-7516/2013/01/021
Gao, Xin, Kang, Zhaofeng, and Li, Tianjun. 2013.
"Origins of the isospin violation of dark matter interactions". United States. https://doi.org/10.1088/1475-7516/2013/01/021.
@article{osti_22279613,
title = {Origins of the isospin violation of dark matter interactions},
author = {Gao, Xin and Kang, Zhaofeng and Li, Tianjun},
abstractNote = {Light dark matter (DM) with a large DM-nucleon spin-independent scattering cross section and moreover proper isospin violation (ISV) f{sub n}/f{sub p} ≈ −0.7 may provide a way to understand the confusing DM direct detection results. Further using the stringent astrophysical and collider constraints, we systematically investigate the origin of ISV first via general operator analyses and further via specifying three types of mediators: a light Z' from chiral U(1){sub X}, an approximate spectator Higgs doublet (It can explain the W+jj anomaly simultaneously) and color triplets. In addition, although Z' from an exotic U(1){sub X} mixing with U(1){sub Y} generates only f{sub n} = 0, we can combine it with the conventional Higgs to achieve the proper ISV. As a concrete example, we propose the U(1){sub X} model where the U(1){sub X} charged light sneutrino is an inelastic DM, which dominantly annihilates to light dark states such as Z' with sub-GeV mass. The model can consistently (with other DM direct detection results) and safely interpret the recent GoGeNT annual modulation result.},
doi = {10.1088/1475-7516/2013/01/021},
url = {https://www.osti.gov/biblio/22279613},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 01,
volume = 2013,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2013},
month = {Tue Jan 01 00:00:00 EST 2013}
}