Results 51 to 60 of about 902,528 (341)

Search for Milli-Charged particles from the Sun at IceCube

Journal of High Energy Physics, 2022
It is assumed that heavy dark matter particles ϕ with O(TeV) mass captured by the Sun may decay to relativistic light milli-charged particles (MCPs). These MCPs could be measured by the IceCube detector.
Ye Xu
doaj   +1 more source

Cornering Colored Coannihilation

, 2018
In thermal dark matter models, allowing the dark matter candidate to coannihilate with another particle can considerably loosen the relic density constraints on the dark matter mass. In particular, introducing a single strongly interacting coannihilation
de Vries, Maikel, Hedri, Sonia El
core   +1 more source

Implications of unitarity and gauge invariance for simplified dark matter models [PDF]

, 2015
A bstractWe show that simplified models used to describe the interactions of dark matter with Standard Model particles do not in general respect gauge invariance and that perturbative unitarity may be violated in large regions of the parameter space. The
F. Kahlhoefer, K. Schmidt-Hoberg, T. Schwetz, S. Vogl   +3 more
semanticscholar   +1 more source

Vector portals at future lepton colliders

Journal of High Energy Physics
We assess the sensitivity of future lepton colliders to weakly coupled vector dark portals (aka “Z ′ bosons”) with masses ranging from tens of GeV to a few TeV. Our analysis focuses on dark photons and L μ – L τ gauge bosons. We consider both visible and
Sagar Airen, Edward Broadberry, Gustavo Marques-Tavares, Lorenzo Ricci   +3 more
doaj   +1 more source

Hidden Sector Dark Matter Models for the Galactic Center Gamma-Ray Excess [PDF]

, 2014
The gamma-ray excess observed from the Galactic Center can be interpreted as dark matter particles annihilating into Standard Model fermions with a cross section near that expected for a thermal relic.
A. Berlin, Pierre Gratia, D. Hooper, Samuel D. McDermott   +3 more
semanticscholar   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Singlet-doublet fermionic dark matter in gauge theory of baryons

Journal of High Energy Physics
We are considering a minimal U(1) B extension of the Standard Model (SM) by promoting the baryon number as a local gauge symmetry to accommodate a stable dark matter (DM) candidate. The gauge theory of baryons induces non-trivial triangle gauge anomalies,
Taramati, Rameswar Sahu, Utkarsh Patel, Kirtiman Ghosh, Sudhanwa Patra   +4 more
doaj   +1 more source

WIMP Dark Matter and Baryogenesis

, 2010
In the present universe visible and dark matter contribute comparable energy density although they have different properties. This coincidence can be elegantly explained if the dark matter relic density, originating from a dark matter asymmetry, is fully
Gu, Pei-Hong, Lindner, Manfred, Sarkar, Utpal, Zhang, Xinmin   +3 more
core   +1 more source

Linked dimers of the AAA+ ATPase Msp1 reveal energetic demands and mechanistic plasticity for substrate extraction from lipid bilayers

FEBS Letters, EarlyView.
Cells must clear mislocalized or faulty proteins from membranes to survive. The AAA+ ATPase Msp1 performs this task, but dissecting how its six subunits work together is challenging. We engineered linked dimers with varied numbers of functional subunits to reveal how Msp1 subunits cooperate and use energy to extract proteins from the lipid bilayer ...
Deepika Gaur, Brian Acquaviva, Baylee A. Smith, Nathan Walker, Isabella Walter, Matthew L. Wohlever   +5 more
wiley   +1 more source

Does stellar mass assembly history vary with environment? [PDF]

, 2011
Using the publicly available VESPA database of SDSS Data Release 7 spectra, we calculate the stellar Mass Weighted Age (hereafter MWA) as a function of local galaxy density and dark matter halo mass.
Hoyle, Ben, Jimenez, Raul, Verde, Licia
core   +2 more sources