Production and decays of 146 GeV flavons into eμ final state at the LHC

被引：2
作者：
Koivunen, Niko [1 ]
Raidal, Martti [1 ]
机构：
[1] NICPB, Lab High Energy & Computat Phys, Ravala Pst 10, EE-10143 Tallinn, Estonia
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2023年 / 2023卷 / 11期
关键词：
Flavour Symmetries; Lepton Flavour Violation (charged); Rare Decays;
D O I：
10.1007/JHEP11(2023)014
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The CMS experiment at CERN has reported a possible signal for a resonance at 146 GeV decaying into the e mu final state which, presently, is the only experimental hint for lepton flavour violation in any low- and high-energy experiment. The Froggatt-Nielsen mechanism naturally predicts the existence of new scalars, the flavons, with flavour off-diagonal couplings. We study this framework in the context of the CMS result and find that the minimal, purely leptophilic model is too restricted to match the claimed signal. Thereafter we show how models with additional flavon couplings to quarks can explain the claimed signal while satisfying all the existing constraints on lepton flavour violation.
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页数：18
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共 32 条
  • [1] Search for resonances decaying into photon pairs in 139 fb-1 of pp collisions at √s=13 TeV with the ATLAS detector
    Aad, G.
    Abbott, B.
    Abbott, D. C.
    Abud, A. Abed
    Abeling, K.
    Abhayasinghe, D. K.
    Abidi, S. H.
    AbouZeid, O. S.
    Abraham, N. L.
    Abramowicz, H.
    Abreu, H.
    Abulaiti, Y.
    Acharya, B. S.
    Achkar, B.
    Adam, L.
    Bourdarios, C. Adam
    Adamczyk, L.
    Adamek, L.
    Adelman, J.
    Adiguzel, A.
    Adorni, S.
    Adye, T.
    Affolder, A. A.
    Afik, Y.
    Agapopoulou, C.
    Agaras, M. N.
    Aggarwal, A.
    Agheorghiesei, C.
    Aguilar-Saavedra, J. A.
    Ahmad, A.
    Ahmadov, F.
    Ahmed, W. S.
    Ai, X.
    Aielli, G.
    Akatsuka, S.
    Akbiyik, M.
    Akesson, T. P. A.
    Akilli, E.
    Akimov, A., V
    Al Khoury, K.
    Alberghi, G. L.
    Albert, J.
    Verzini, M. J. Alconada
    Alderweireldt, S.
    Aleksa, M.
    Aleksandrov, I. N.
    Alexa, C.
    Alexopoulos, T.
    Alfonsi, A.
    Alfonsi, F.
    [J]. PHYSICS LETTERS B, 2021, 822
  • [2] ATLAS, 2020, Phys. Lett. B, V801, DOI DOI 10.1016/J.PHYSLETB.2019.135148
  • [3] Baldini AM, 2016, EUR PHYS J C, V76, DOI 10.1140/epjc/s10052-016-4271-x
  • [4] ELECTRIC-DIPOLE MOMENT OF THE ELECTRON AND OF THE NEUTRON
    BARR, SM
    ZEE, A
    [J]. PHYSICAL REVIEW LETTERS, 1990, 65 (01) : 21 - 24
  • [5] Hunting the flavon
    Bauer, Martin
    Schell, Torben
    Plehn, Tilman
    [J]. PHYSICAL REVIEW D, 2016, 94 (05)
  • [6] SEARCH FOR THE DECAY MU+-]E+E+E-
    BELLGARDT, U
    OTTER, G
    EICHLER, R
    FELAWKA, L
    NIEBUHR, C
    WALTER, HK
    BERTL, W
    LORDONG, N
    MARTINO, J
    EGLI, S
    ENGFER, R
    GRAB, C
    GROSSMANNHANDSCHIN, M
    HERMES, EA
    KRAUS, N
    MUHEIM, F
    PRUYS, H
    VANDERSCHAAF, A
    VERMEULEN, D
    [J]. NUCLEAR PHYSICS B, 1988, 299 (01) : 1 - 6
  • [7] A search for μ-e conversion in muonic gold
    Bertl, W.
    Engfer, R.
    Hermes, E. A.
    Kurz, G.
    Kozlowski, T.
    Kuth, J.
    Otter, G.
    Rosenbaum, F.
    Ryskulov, N. M.
    van der Schaaf, A.
    Wintz, P.
    Zychor, I.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2006, 47 (02): : 337 - 346
  • [8] Yukawa textures with an anomalous horizontal Abelian symmetry
    Binetruy, P
    Lavignac, S
    Ramond, P
    [J]. NUCLEAR PHYSICS B, 1996, 477 (02) : 353 - 377
  • [9] Quasi-degenerate neutrinos from an Abelian family symmetry
    Binetruy, P
    Lavignac, S
    Petcov, S
    Ramond, P
    [J]. NUCLEAR PHYSICS B, 1997, 496 (1-2) : 3 - 23
  • [10] CMS collaboration, 2023, MORIOND 2023
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