Results 1 to 10 of about 446 (108)

Precise estimate of charged Wino decay rate

Journal of High Energy Physics, 2023
The Wino is an SU(2) L triplet Majorana fermion and a well-motivated dark matter candidate. The mass difference between the charged and the neutral Winos is small thanks to the SU(2) L symmetry. The small mass difference makes the charged Wino metastable,
Masahiro Ibe, Yuhei Nakayama, Satoshi Shirai   +2 more
exaly   +2 more sources

Zero-range effective field theory for resonant wino dark matter. Part III. Annihilation effects

Journal of High Energy Physics, 2018
Near a critical value of the wino mass where there is a zero-energy S-wave resonance at the neutral-wino-pair threshold, low-energy winos can be described by a zero-range effective field theory (ZREFT) in which the winos interact nonperturbatively ...
Evan Johnson
exaly   +3 more sources

Wino potential and Sommerfeld effect at NLO

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2020
We calculate the SU(2)×U(1) electroweak static potential between a fermionic triplet in the broken phase of the Standard Model in the one-loop order (NLO).
Robert Szafron, Kai Urban
exaly   +3 more sources

Sommerfeld-corrected relic abundance of wino dark matter with NLO electroweak potentials

Journal of High Energy Physics, 2021
Extending previous work, we calculate the electroweak potentials for all co-annihilation channels of wino dark matter at the one-loop order and obtain the wino relic abundance including the Sommerfeld effect at the next-to-leading order (NLO).
Martin Beneke, Robert Szafron, Kai Urban   +2 more
exaly   +2 more sources

Determining wino lifetime in supersymmetric model at future 100 TeV pp colliders

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2020
We discuss a possibility to measure the lifetime of charged Wino in supersymmetric model at future 100TeV pp colliders, assuming that (neutral) Wino is the lightest superparticle (LSP). In the Wino LSP scenario, the charged Wino has a lifetime of about 0.
So Chigusa, Takeo Moroi, M Saito
exaly   +3 more sources

Wino-Higgsino dark matter in MSSM from the g − 2 anomaly

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2021
In this letter, we show that the wino-Higgsino dark matter (DM) is detectable in near future DM direct detection experiments for almost all consistent parameter space in the spontaneously broken supergravity (SUGRA) if the muon g−2 anomaly is explained ...
Sho Iwamoto, Tsutomu T Yanagida, Norimi Yokozaki   +2 more
exaly   +3 more sources

Zero-range effective field theory for resonant wino dark matter. Part I. Framework

Journal of High Energy Physics, 2017
The most dramatic “Sommerfeld enhancements” of neutral-wino-pair annihilation occur when the wino mass is near a critical value where there is a zero-energy S-wave resonance at the neutral-wino-pair threshold.
Evan Johnson
exaly   +3 more sources

Mass of decaying wino from AMS-02 2014

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2015
We revisit the decaying wino dark matter scenario in the light of the updated positron fraction, electron and positron fluxes in cosmic ray recently reported by the AMS-02 collaboration.
Satoshi Shirai, Tsutomu T Yanagida
exaly   +3 more sources

Zero-range effective field theory for resonant wino dark matter. Part II. Coulomb resummation

Journal of High Energy Physics, 2018
Near a critical value of the wino mass where there is a zero-energy S-wave resonance at the neutral-wino-pair threshold, low-energy winos can be described by a zero-range effective field theory (ZREFT) in which the winos interact nonperturbatively ...
Evan Johnson
exaly   +3 more sources

Mixed axion-wino dark matter

Frontiers in Physics, 2015
A variety of supersymmetric models give rise to a split mass spectrumcharacterized by very heavy scalars but sub-TeV gauginos, usually with awino-like LSP.
André Lessa, Hasan Serce
exaly   +3 more sources