Flavor-singlet spectrum in multi-flavor QCD
| Autor: | Enrico Rinaldi, Hiroshi Ohki, Kei-ichi Nagai, Masafumi Kurachi, Ed Bennett, Takeshi Yamazaki, Yasumichi Aoki, Tatsumi Aoyama, Koichi Yamawaki, Toshihide Maskawa, Kohtaroh Miura, Akihiro Shibata |
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| Přispěvatelé: | Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Particle physics
Physics beyond the Standard Model QC1-999 High Energy Physics::Lattice Lattice field theory FOS: Physical sciences hierarchy Higgs particle 01 natural sciences Standard Model mass spectrum High Energy Physics - Lattice flavor: 8 0103 physical sciences quantum chromodynamics 010306 general physics numerical calculations Higgs model: composite fermion: staggered Physics Quantum chromodynamics 010308 nuclear & particles physics new physics [PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat] pseudoscalar particle High Energy Physics - Lattice (hep-lat) High Energy Physics::Phenomenology lattice field theory Fermion flavor: singlet Pseudoscalar flavor: dependence fermion: massless Composite Higgs models [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] Higgs boson gauge field theory: SU(3) High Energy Physics::Experiment |
| Zdroj: | EPJ Web Conf. 35th International Symposium on Lattice Field Theory 35th International Symposium on Lattice Field Theory, Jun 2017, Granada, Spain. pp.08023, ⟨10.1051/epjconf/201817508023⟩ EPJ Web of Conferences, Vol 175, p 08023 (2018) |
| DOI: | 10.1051/epjconf/201817508023⟩ |
| Popis: | Studying SU(3) gauge theories with increasing number of light fermions is relevant both for understanding the strong dynamics of QCD and for constructing strongly interacting extensions of the Standard Model (e.g. UV completions of composite Higgs models). In order to contrast these many-flavors strongly interacting theories with QCD, we study the flavor-singlet spectrum as an interesting probe. In fact, some composite Higgs models require the Higgs boson to be the lightest flavor-singlet scalar in the spectrum of a strongly interacting new sector with a well defined hierarchy with the rest of the states. Moreover, introducing many light flavors at fixed number of colors can influence the dynamics of the lightest flavor-singlet pseudoscalar. We present the on-going study of these flavor-singlet channels using multiple interpolating operators on high-statistics ensembles generated by the LatKMI collaboration and we compare results with available data obtained by the Lattice Strong Dynamics collaboration. For the theory with 8 flavors, the two collaborations have generated configurations that complement each others with the aim to tackle the massless limit using the largest possible volumes. contribution to the 35th International Symposium on Lattice Field Theory (Lattice 2017). Updated references and acknowledgments |
| Databáze: | OpenAIRE |
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