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Baryon and lepton number violation from gravitational waves
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Cosmic perturbations, baryon asymmetry, and dark matter from the minimal supersymmetric standard model
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Qualities of the axion and LSP in Pati-Salam unification with Z 4 R × Z N symmetry
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Gravitational wave signatures of lepton universality violation
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Low-energy implications of cosmological data in U ( 1 ) X Higgs inflation
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Pseudo-Goldstone dark matter in a gauged B − L extended standard model
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C P -violating Higgs boson ditau decays: Baryogenesis and Higgs factories
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Impact of a midband gravitational wave experiment on detectability of cosmological stochastic gravitational wave backgrounds
In this report we make forecasts for the impact a future “midband” space-based gravitational wave experiment, most sensitive to 10 -2 - 10Hz,could have on potential detections of cosmological stochastic gravitational wave backgrounds (SGWBs). Specific proposed midband experiments considered are TianGo, B-DECIGO, and AEDGE. We propose a combined power-law integrated sensitivity (CPLS) curve combining GW experiments over different frequency bands, which shows the midband improves sensitivity to SGWBs by up to two orders of magnitude at 10 -2 - 10 Hz . We consider GW emission from cosmic strings and phase transitions as benchmark examples of cosmological SGWBs. We explicitly model various astrophysical SGWB sources, most importantly from unresolved black hole mergers. Using Markov Chain Monte Carlo, we demonstrated that midband experiments can, when combined with LIGO A+ and LISA, significantly improve sensitivities to cosmological SGWBs and better separate them from astrophysical SGWBs. In particular, we forecast that a midband experiment improves sensitivity to cosmic string tension G μ by up to a factor of 10, driven by improved component separation from astrophysical sources. For phase transitions, a midband experiment can detect signals peaking at 0.1–1 Hz, which for our fiducial model corresponds to early Universe temperatures of T * ~10 4 – 10 6 GeV , generally beyond the reach of LIGO and LISA. The midband closes an energy gap and better captures characteristic spectral shape information. It thus substantially improves measurement of the properties of phase transitions at lower energies of T * ~ O(10 3 ) GeV , potentially relevant to new physics at the electroweak scale, whereas in this energy range LISA alone will detect an excess but not effectively measure the phase transition parameters. Our modeling code and chains are publicly available.
Simple models with both baryon and lepton number violation by two units
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Signal of four muons or more from a vector-like lepton decaying to a muon-philic Z ′ boson at the LHC
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Leptoquarks and matter unification: Flavor anomalies and the muon g − 2
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