Precision test of the muon-Higgs coupling at a high-energy muon collider

Han, Tao; Kilian, Wolfgang; Kreher, Nils; Ma, Y.; Reuter, Jürgen; Striegl, Tobias; Xie, Keping

doi:10.1007/jhep12(2021)162

Cited by 31 publications

(22 citation statements)

References 84 publications

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“…Finally, we present some kinematic distributions of the inclusive jets in figure 7, the transverse momentum (p j T , upper panels), the jet energy (E j , middle panels), and the pseudo-rapidity (η j , lower panels), at a 3 TeV e + e − (left panels) and a 10 TeV µ + µ − (right panels) collider, respectively. 6 The p j T distributions in figure 7 resemble very similar features as those of m ij in figure 6, with the Jacobian peaks around the p j T ∼ m ij /2 for the fusion processes, and peaked sharply at √ s/2 and M Z /2 for the annihilation processes. We once again see the dominant QCD jet production over the W + W − channel until the kinematical region with a high transverse momentum p j T > 60 GeV.…”

Section: Jhep02(2022)154mentioning

confidence: 55%

“…This exciting possibility could lead us to an unexplored regime at the energy and luminosity frontier for new physics reach beyond the Standard Model (SM). Indeed, beyond the extensive studies for a multi-TeV e + e − collider of the CERN Compact Linear Collider (CLIC) [3], some recent works on a high-energy muon collider have shown great physics potential for precision SM Higgs physics [4][5][6], BSM heavy Higgs boson discovery [7,8], WIMP dark matter searches [9,10], electroweak phase transition [11], lepton-universality violation [12,13], and a broad coverage for other new physics scenarios [14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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Quark and gluon contents of a lepton at high energies

Han

Xie

2022

J. High Energ. Phys.

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In high-energy leptonic collisions, such as at a multi-TeV muon collider, the collinear splittings of the electroweak (EW) gauge bosons and leptons are the dominant phenomena, and the scattering processes should thus be formulated in terms of the EW parton distribution functions (EW PDFs). We complete this formalism in the Standard Model to include the QCD sector and evaluate the quark and gluon PDFs inside a lepton at the double-log accuracy. The splittings of the photon and subsequently the quarks and gluons control the quark/gluon PDFs below the EW scale. The massive gauge bosons lead to substantial contributions at high scales. The jet production cross section can reach the order of a few nb (50 pb) in e+e−(μ+μ−) collisions, at the TeV c.m. energies with a moderate acceptance cut, that governs the overall event shape up to about $$ {p}_T^j $$ p T j ∼ 60 GeV. To complete the picture, we also provide an estimation of the total cross section for the photon-induced hadronic production at low partonic energies, which can reach the level of one hundred or a few tens of nb in high-energy electron or muon collisions.

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Section: Jhep02(2022)154mentioning

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Quark and gluon contents of a lepton at high energies

Han

Xie

2022

J. High Energ. Phys.

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“…A high-energy MuC with multi-TeV center-of-mass energy and high luminosity would allow to measure the Higgs-muon coupling in a model-independent way, directly probing the mass generation mechanism of the muon. Considering its general applicability, the proposal presented in [24] can be extended to study related new physics effects involving final states of charged leptons and jets. Here we summarize their key findings.…”

Section: Muon Yukawa Couplings 101 Modified Muon-higgs Couplingmentioning

confidence: 99%

The physics case of a 3 TeV muon collider stage

Blas¹,

Buttazzo²,

Capdevilla³

et al. 2022

Preprint

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This is one of the six reports submitted to Snowmass by the International Muon Collider Collaboration. The Indico subscription page: https://indico.cern.ch/event/1130036/ contains the link to the reports and gives the possibility to subscribe to the papers.The policy for signatures is that, for each individual report, you can subscribe as "Author" or as "Signatory", defined as follows:-"Author" indicates that you did contribute to the results documented in the report in any form, including e.g. by participating to the discussions of the community meeting, sending comments on the drafts, etc, or that you plan to contribute to the future work. The "Authors" will appear as such in on arXiv. -"Signatory" means that you express support to the Collaboration effort and endorse the Collaboration plans. The "Signatories" list will be reported in the text only.

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“…Furthermore, the physics reach of a muon collider extends that of a proton-proton collider of the same energy since all of the beam energy is available for the hard collision, whereas a faction of the proton-beam energy is carried by the colliding partons 7 . A dedicated muon collider can scan the Higgs resonance and precisely measure its mass and width [66][67][68]. In fact, a muon collider is ideal to search for new physics and for resolving narrow resonances both as a precision and/or as an exploratory machine.…”

Section: Muon Collider Resonant Searches For Anomalous Triple Gauge B...mentioning

confidence: 99%

The Elusive Muonic WIMP

Medina¹,

Mileo²,

Szynkman³

et al. 2021

Preprint

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The Weakly Interacting Massive Particle (WIMP) paradigm is one of the most popular scenarios for Dark Matter (DM) theories that however is strongly constrained, in particular by direct detection experiments. We stick with the WIMP hypothesis and consider a Dirac fermion candidate for DM that interacts with the Standard Model (SM) via a spin-1 Z , arising from the spontaneous breaking of an Abelian U (1) µ gauge symmetry, under which only second generation leptons and the DM are appropriately charged. Due to the charge assignment, the model is gauge anomalous and can only be interpreted as an effective field theory (EFT) at low energy. The Z couples at tree level only to the vector DM current, to the axial muon current and to lefthanded muonic neutrinos, so the WIMP-nucleon cross section is beyond the experimental reach of spin-independent (SI) direct detection searches. We study the current bounds on this model coming from direct and indirect detection of DM, collider searches, contributions to (g − 2) µ and to neutrino trident production. We find that large regions of the parameter space remains to be explored. In the context of LHC searches, we study the impact of a muon-exclusive signal region for the 3µ + E miss T *

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Precision test of the muon-Higgs coupling at a high-energy muon collider

Cited by 31 publications

References 84 publications

Quark and gluon contents of a lepton at high energies

Quark and gluon contents of a lepton at high energies

The physics case of a 3 TeV muon collider stage

The Elusive Muonic WIMP

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