Lepton-flavored electroweak baryogenesis

Guo, Huai-Ke; Li, Yingying; Liu, Tao; Ramsey-Musolf, Michael J.; Shu, Jing

doi:10.1103/physrevd.96.115034

Cited by 56 publications

(71 citation statements)

References 64 publications

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“…• v w and Hydrodynamics -A stronger GW production usually requires a larger v w , while a successful EWBG needs a small, generally subsonic v w (for EWBG calculations, see e.g., [26][27][28][29][30]). Hence, a large v w , which can source detectable GW signals, is detrimental to the process of generating the observed baryon asymmetry of the universe.…”

Section: Gravitational Wavesmentioning

confidence: 99%

Di-Higgs production in the 4b channel and gravitational wave complementarity

Alves

Gonçalves

Ghosh

et al. 2020

J. High Energ. Phys.

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We present a complementarity study of gravitational waves and double Higgs production in the 4b channel, exploring the gauge singlet scalar extension of the SM. This new physics extension serves as a simplified benchmark model that realizes a strongly first-order electroweak phase transition necessary to generate the observed baryon asymmetry in the universe. In calculating the signal-to-noise ratio of the gravitational waves, we incorporate the effect of the recently discovered significant suppression of the gravitational wave signals from sound waves for strong phase transitions, make sure that supercooled phase transitions do complete and adopt a bubble wall velocity that is consistent with a successful electroweak baryogenesis by solving the velocity profiles of the plasma. The high-luminosity LHC sensitivity to the singlet scalar extension of the SM is estimated using a shape-based analysis of the invariant 4b mass distribution. We find that while the region of parameter space giving detectable gravitational waves is shrunk due to the new gravitational wave simulations, the qualitative complementary role of gravitational waves and collider searches remain unchanged.

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Section: Gravitational Wavesmentioning

confidence: 99%

Di-Higgs production in the 4b channel and gravitational wave complementarity

Alves

Gonçalves

Ghosh

et al. 2020

J. High Energ. Phys.

Self Cite

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“…This was studied in relation to the LFV decay h → τ µ in [9,19,34,47,53,70,76,130], and very recently in [134,135]. It could also be linked to the popular b → s [31,48] or b → c [42] anomalies observed in B-meson decays or be a crucial ingredient for lepton-flavored electroweak baryogenesis [80]. In fact, the type-III 2HDM with generic Yukawa couplings has a very rich flavor phenomenology, see [130].…”

Section: Hlfv Phenomenologymentioning

confidence: 99%

Higgs Lepton Flavor Violating Decays in Two Higgs Doublet Models

Vicente

2019

Front. Phys.

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The discovery of a non-zero rate for a lepton flavor violating decay mode of the Higgs boson would definitely be an indication of New Physics. We review the prospects for such signal in Two Higgs Doublet Models, in particular for Higgs boson decays into τ µ final states. We will show that this scenario contains all the necessary ingredients to provide large flavor violating rates and still be compatible with the stringent limits from direct searches and low-energy flavor experiments.1

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“…Since ρ is measured to be nearly one [183], we conclude that Thus, enlarging the SM with a scalar doublet is a natural framework, which is known as Two Higgs Doublet Model (2HDM) [322]. The 2HDM has a rich phenomenology and possesses several nice features such as links to Supersymmetry [283], axion models [323][324][325][326], baryogenesis [327][328][329][330][331][332][333][334][335][336][337][338] and even furnishes an environment for dark matter [339][340][341][342][343], among others [344,345]. In what follows, we will be restricted to the non-supersymmetric 2HDM, see [346] for an extensive discussion.…”

Section: Two Higgs Doublet Modelmentioning

confidence: 99%

A call for new physics: The muon anomalous magnetic moment and lepton flavor violation

2018

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We review how the muon anomalous magnetic moment (g − 2) and the quest for lepton flavor violation are intimately correlated. Indeed the decay µ → eγ is induced by the same amplitude for different choices of in-and outgoing leptons. In this work, we try to address some intriguing questions such as:Which hierarchy in the charged lepton sector one should have in order to reconcile possible signals coming simultaneously from g − 2 and lepton flavor violation?What can we learn if the g − 2 anomaly is confirmed by the upcoming flagship experiments at FERMILAB and J-PARC, and no signal is seen in the decay µ → eγ in the foreseeable future? On the other hand, if the µ → eγ decay is seen in the upcoming years, do we need to necessarily observe a signal also in g − 2?.In this attempt, we generally study the correlation between these observables in a detailed analysis of simplified models. We derive master integrals and

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Lepton-flavored electroweak baryogenesis

Cited by 56 publications

References 64 publications

Di-Higgs production in the 4b channel and gravitational wave complementarity

Di-Higgs production in the 4b channel and gravitational wave complementarity

Higgs Lepton Flavor Violating Decays in Two Higgs Doublet Models

A call for new physics: The muon anomalous magnetic moment and lepton flavor violation

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