New physics in multi-electron muon decays

被引：3

作者：

Hostert, Matheus ^{[1
,2
,3
]}

Menzo, Tony ^{[4
]}

Pospelov, Maxim ^{[2
,3
]}

Zupan, Jure ^{[4
]}

机构：

[1] Perimeter Inst Theoret Phys, Waterloo, ON N2J 2W9, Canada

[2] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[3] Univ Minnesota, William I Fine Theoret Phys Inst, Sch Phys & Astron, Minneapolis, MN 55455 USA

[4] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2023年 / 2023卷 / 10期

关键词：

Lepton Flavour Violation (charged); New Light Particles; Rare Decays; UPPER LIMIT; PREDICTIONS; SEARCH;

D O I：

10.1007/JHEP10(2023)006

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：

We study the exotic muon decays with five charged tracks in the final state. First, we investigate the Standard Model rate for mu(+) -> 3e(+) 2e(-) 2 nu (B = 4.0 x 10(-10)) and find that the Mu3e experiment should have tens to hundreds of signal events per 10(15) mu(+) decays, depending on the signal selection strategy. We then turn to a neutrinoless mu(+) -> 3e(+) 2e(-) decay that may arise in new-physics models with lepton-flavor-violating effective operators involving a dark Higgs hd. Following its production in mu(+) -> e(+) h(d) decays, the dark Higgs can undergo a decay cascade to two e(+) e(-) pairs through two dark photons, h(d) -> gamma(d)gamma(d) -> 2(e(+)e(-)). We show that a mu(+) -> 3e(+) 2e(-) search at the Mu3e experiment, with potential sensitivity to the branching ratio at the O(10(-1)2) level or below, can explore new regions of parameter space and new physics scales as high as Lambda similar to 10(15) GeV.

引用

页数：22

共 65 条

[1] A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery
Aad, G.
Abbott, B.
Abbott, D. C.
Abeling, K.
Abidi, S. H.
Aboulhorma, A.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Hoffman, A. C. Abusleme
Acharya, B. S.
Achkar, B.
Adam, L.
Bourdarios, C. Adam
Adamczyk, L.
Adamek, L.
Addepalli, S. V.
Adelman, J.
Adiguzel, A.
Adorni, S.
Adye, T.
Affolder, A. A.
Afik, Y.
Agaras, M. N.
Agarwala, J.
Aggarwal, A.
Agheorghiesei, C.
Aguilar-Saavedra, J. A.
Ahmad, A.
Ahmadov, F.
Ahmed, W. S.
Ahuja, S.
Ai, X.
Aielli, G.
Aizenberg, I.
Akbiyik, M.
Akesson, T. P. A.
Akimov, A. V.
Al Khoury, K.
Alberghi, G. L.
Albert, J.
Albicocco, P.
Verzini, M. J. Alconada
Alderweireldt, S.
Aleksa, M.
Aleksandrov, I. N.
Alexa, C.
Alexopoulos, T.
Alfonsi, A.
Alfonsi, F.
[J]. NATURE, 2022, 607 (7917) : 52 - +
[2] Adamov G., 2018, arXiv
[3] Improved search for two body muon decay μ+ → e+ XH
Aguilar-Arevalo, A.
Aoki, M.
Blecher, M.
Britton, D., I
vom Bruch, D.
Bryman, D. A.
Chen, S.
Comfort, J.
Cuen-Rochin, S.
Doria, L.
Gumplinger, P.
Hussein, A.
Igarashi, Y.
Ito, S.
Kettell, S.
Kurchaninov, L.
Littenberg, L. S.
Malbrunot, C.
Mischke, R. E.
Numao, T.
Protopopescu, D.
Sher, A.
Sullivan, T.
Vavilov, D.
[J]. PHYSICAL REVIEW D, 2020, 101 (05)
[4] The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
Alwall, J.
Frederix, R.
Frixione, S.
Hirschi, V.
Maltoni, F.
Mattelaer, O.
Shao, H. -S.
Stelzer, T.
Torrielli, P.
Zaro, M.
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2014, (07):
[5] Search for dark Higgsstrahlung in e+0e- → μ+μ- and missing energy events with the KLOE experiment
Anastasi, A.
Babusci, D.
Bencivenni, G.
Berlowski, M.
Bloise, C.
Bossi, F.
Branchini, P.
Budano, A.
Balkestahl, L. Caldeira
Cao, B.
Ceradini, F.
Ciambrone, P.
Curciarello, F.
Czerwinski, E.
D'Agostini, G.
Dane, E.
De Leo, V.
De Lucia, E.
De Santis, A.
De Simone, P.
Di Cicco, A.
Di Domenico, A.
Di Salvo, R.
Domenici, D.
D'Uffizi, A.
Fantini, A.
Felici, G.
Fiore, S.
Gajos, A.
Gauzzi, P.
Giardina, G.
Giovannella, S.
Graziani, E.
Happacher, F.
Heijkenskjold, L.
Andersson, W. Ikegami
Johansson, T.
Kaminska, D.
Krzemien, W.
Kupsc, A.
Loffredo, S.
Mandaglio, G.
Martini, M.
Mascolo, M.
Messi, R.
Miscetti, S.
Morello, G.
Moricciani, D.
Moskal, P.
Nguyen, F.
[J]. PHYSICS LETTERS B, 2015, 747 : 365 - 372
[6] Antel C., 2023, arXiv
[7] Technical design of the phase I Mu3e experiment
Arndt, K.
Augustin, H.
Baesso, P.
Berger, N.
Berg, F.
Betancourt, C.
Bortoletto, D.
Bravar, A.
Briggl, K.
vom Bruch, D.
Buonaura, A.
Cadoux, F.
Barajas, C. Chavez
Chen, H.
Clark, K.
Cooke, P.
Corrodi, S.
Damyanova, A.
Demets, Y.
Dittmeier, S.
Eckert, P.
Ehrler, F.
Fahrni, D.
Gagneur, S.
Gerritzen, L.
Goldstein, J.
Gottschalk, D.
Grab, C.
Gredig, R.
Groves, A.
Hammerich, J.
Hartenstein, U.
Hartmann, U.
Hayward, H.
Herkert, A.
Hesketh, G.
Hetzel, S.
Hildebrandt, M.
Hodge, Z.
Hofer, A.
Huang, Q. H.
Hughes, S.
Huth, L.
Immig, D. M.
Jones, T.
Jones, M.
Kaestli, H-C
Koeppel, M.
Kettle, P-R
Kiehn, M.
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2021, 1014
[8] ATLAS collaboration, 2022, J High Energy Phys, V03, P041
[9] ATLAS collaboration, 2020, Phys. Lett. B, V801, DOI DOI 10.1016/J.PHYSLETB.2019.135148
[10] NEW UPPER LIMIT ON THE DECAY MU-]E-GAMMA-GAMMA
AZUELOS, G
DEPOMMIER, P
LEROY, C
MARTIN, JP
POUTISSOU, JM
POUTISSOU, R
SIROIS, Y
BRYMAN, DA
DIXIT, M
MACDONALD, JA
HASINOFF, MD
[J]. PHYSICAL REVIEW LETTERS, 1983, 51 (03) : 164 - 167

← 1 2 3 4 5 6 7 →