Abstract
We revisit the gauged U(1)B−L explanation of the ATOMKI nuclear anomalies, in which the new gauge boson is the hypothetical X(17) particle. It is known that the vanilla B − L scenario is unable to account for appropriate couplings, namely the suppression of the couplings of X(17) to neutrinos, which motivates adding vector-like leptons. The simplest case, in which the new fields have B − L charges equal to 1, is highly disfavoured since it requires large mixing with the Standard Model fields. One solution recently put forward is to consider large B − L charges to counterbalance small mixing. We show that, in this scenario, and after taking into account several phenomenological constraints, the dominant contribution to the muon anomalous magnetic moment (g − 2)μ is expected to be extremely large and with a negative sign, being thus excluded by experiment.
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References
A.J. Krasznahorkay et al., Observation of Anomalous Internal Pair Creation in 8Be: A possible Indication of a Light, Neutral Boson, Phys. Rev. Lett. 116 (2016) 042501 [arXiv:1504.01527] [INSPIRE].
A.J. Krasznahorkay et al., New anomaly observed in 4He supports the existence of the hypothetical X17 particle, Phys. Rev. C 104 (2021) 044003 [arXiv:2104.10075] [INSPIRE].
A.J. Krasznahorkay et al., New anomaly observed in C12 supports the existence and the vector character of the hypothetical X17 boson, Phys. Rev. C 106 (2022) L061601 [arXiv:2209.10795] [INSPIRE].
J.L. Feng, T.M.P. Tait and C.B. Verhaaren, Dynamical Evidence For a Fifth Force Explanation of the ATOMKI Nuclear Anomalies, Phys. Rev. D 102 (2020) 036016 [arXiv:2006.01151] [INSPIRE].
D.S.M. Alves et al., Shedding light on X17: community report, Eur. Phys. J. C 83 (2023) 230 [INSPIRE].
J.L. Feng et al., Protophobic Fifth-Force Interpretation of the Observed Anomaly in 8Be Nuclear Transitions, Phys. Rev. Lett. 117 (2016) 071803 [arXiv:1604.07411] [INSPIRE].
J.L. Feng et al., Particle physics models for the 17 MeV anomaly in beryllium nuclear decays, Phys. Rev. D 95 (2017) 035017 [arXiv:1608.03591] [INSPIRE].
NA48/2 collaboration, Search for the dark photon in π0 decays, Phys. Lett. B 746 (2015) 178 [arXiv:1504.00607] [INSPIRE].
L. Delle Rose, S. Khalil and S. Moretti, Explanation of the 17 MeV Atomki anomaly in a U(1)′-extended two Higgs doublet model, Phys. Rev. D 96 (2017) 115024 [arXiv:1704.03436] [INSPIRE].
C. Hati, J. Kriewald, J. Orloff and A.M. Teixeira, Anomalies in 8Be nuclear transitions and (g − 2)e,μ: towards a minimal combined explanation, JHEP 07 (2020) 235 [arXiv:2005.00028] [INSPIRE].
T. Nomura and P. Sanyal, Explaining Atomki anomaly and muon g − 2 in U(1)X extended flavour violating two Higgs doublet model, JHEP 05 (2021) 232 [arXiv:2010.04266] [INSPIRE].
E.J. Chun and T. Mondal, Explaining g − 2 anomalies in two Higgs doublet model with vector-like leptons, JHEP 11 (2020) 077 [arXiv:2009.08314] [INSPIRE].
R. Dermisek, K. Hermanek and N. McGinnis, Muon g − 2 in two-Higgs-doublet models with vectorlike leptons, Phys. Rev. D 104 (2021) 055033 [arXiv:2103.05645] [INSPIRE].
P.B. Denton and J. Gehrlein, Neutrino constraints and the ATOMKI X17 anomaly, Phys. Rev. D 108 (2023) 015009 [arXiv:2304.09877] [INSPIRE].
CMS collaboration, A portrait of the Higgs boson by the CMS experiment ten years after the discovery, Nature 607 (2022) 60 [arXiv:2207.00043] [INSPIRE].
Muon g-2 collaboration, Measurement of the Positive Muon Anomalous Magnetic Moment to 0.20 ppm, Phys. Rev. Lett. 131 (2023) 161802 [arXiv:2308.06230] [INSPIRE].
M.P. Bento, H.E. Haber and J.P. Silva, Tree-level Unitarity in SU(2)L × U(1)Y × \( \textrm{U}{(1)}_{Y^{\prime }} \) Models, JHEP 10 (2023) 083 [arXiv:2306.01836] [INSPIRE].
ALEPH et al. collaborations, Precision electroweak measurements on the Z resonance, Phys. Rept. 427 (2006) 257 [hep-ex/0509008] [INSPIRE].
CDF collaboration, Search for WW and WZ Resonances Decaying to Electron, Missing ET and Two Jets in \( p\overline{p} \) Collisions at \( \sqrt{s} \) = 1.96 TeV, Phys. Rev. Lett. 104 (2010) 241801 [arXiv:1004.4946] [INSPIRE].
A. Leike, The phenomenology of extra neutral gauge bosons, Phys. Rept. 317 (1999) 143 [hep-ph/9805494] [INSPIRE].
J. Erler and P. Langacker, Constraints on extended neutral gauge structures, Phys. Lett. B 456 (1999) 68 [hep-ph/9903476] [INSPIRE].
R. Coimbra, M.O.P. Sampaio and R. Santos, ScannerS: Constraining the phase diagram of a complex scalar singlet at the LHC, Eur. Phys. J. C 73 (2013) 2428 [arXiv:1301.2599] [INSPIRE].
W. Emam and S. Khalil, Higgs and Z-prime phenomenology in B-L extension of the standard model at LHC, Eur. Phys. J. C 52 (2007) 625 [arXiv:0704.1395] [INSPIRE].
F. Kling, Probing light gauge bosons in tau neutrino experiments, Phys. Rev. D 102 (2020) 015007 [arXiv:2005.03594] [INSPIRE].
W. Grimus and P. Stockinger, Effects of neutrino oscillations and neutrino magnetic moments on elastic neutrino-electron scattering, Phys. Rev. D 57 (1998) 1762 [hep-ph/9708279] [INSPIRE].
W. Grimus and L. Lavoura, The seesaw mechanism at arbitrary order: Disentangling the small scale from the large scale, JHEP 11 (2000) 042 [hep-ph/0008179] [INSPIRE].
R. Dermisek and A. Raval, Explanation of the Muon g − 2 Anomaly with Vectorlike Leptons and its Implications for Higgs Decays, Phys. Rev. D 88 (2013) 013017 [arXiv:1305.3522] [INSPIRE].
J. Bergstrom et al., Updated determination of the solar neutrino fluxes from solar neutrino data, JHEP 03 (2016) 132 [arXiv:1601.00972] [INSPIRE].
W. Grimus, L. Lavoura, O.M. Ogreid and P. Osland, The oblique parameters in multi-Higgs-doublet models, Nucl. Phys. B 801 (2008) 81 [arXiv:0802.4353] [INSPIRE].
L. Lavoura and J.P. Silva, The oblique corrections from vector-like singlet and doublet quarks, Phys. Rev. D 47 (1993) 2046 [INSPIRE].
ATLAS collaboration, Combination of searches for invisible decays of the Higgs boson using 139 fb 1 of proton-proton collision data at s=13 TeV collected with the ATLAS experiment, Phys. Lett. B 842 (2023) 137963 [arXiv:2301.10731] [INSPIRE].
Z. Hu, J. Ling, J. Tang and T.C. Wang, Global oscillation data analysis on the 3ν mixing without unitarity, JHEP 01 (2021) 124 [arXiv:2008.09730] [INSPIRE].
S. Ghosh and P. Ko, Explaining ATOMKI, (g − 2)μ, and MiniBooNE anomalies with light mediators in U(1)H extended model, arXiv:2311.14099 [INSPIRE].
L. Darmé, M. Mancini, E. Nardi and M. Raggi, Resonant search for the X17 boson at PADME, Phys. Rev. D 106 (2022) 115036 [arXiv:2209.09261] [INSPIRE].
FASER collaboration, Search for dark photons with the FASER detector at the LHC, Phys. Lett. B 848 (2024) 138378 [arXiv:2308.05587] [INSPIRE].
M. Hostert and M. Pospelov, Pion decay constraints on exotic 17 MeV vector bosons, Phys. Rev. D 108 (2023) 055011 [arXiv:2306.15077] [INSPIRE].
D. Barducci and C. Toni, An updated view on the ATOMKI nuclear anomalies, JHEP 02 (2023) 154 [Erratum ibid. 07 (2023) 168] [arXiv:2212.06453] [INSPIRE].
A.J. Krasznahorkay et al., Observation of the X17 anomaly in the decay of the Giant Dipole Resonance of 8Be, arXiv:2308.06473 [INSPIRE].
Acknowledgments
We thank Jonathan Kriewald for carefully reading the manuscript. This work is supported by Fundação para a Ciência e a Tecnologia (FCT, Portugal) through the projects UIDB/00777/2020, UIDP/00777/2020, UIDB/00618/2020, UIDP/00618/2020, CERN/FIS-PAR/0002/2021, CERN/FIS-PAR/0019/2021 and CERN/FIS-PAR/0025/2021. The work of B.L.G. is supported by the FCT PhD grant SFRH/BD/139165/2018. F.R.J. thanks the CERN Department of Theoretical Physics for hospitality and financial support during the preparation of this work.
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Ferreira, P.M., Gonçalves, B.L. & Joaquim, F.R. A closer look at the U(1)B−L explanation of the ATOMKI nuclear anomalies. J. High Energ. Phys. 2024, 3 (2024). https://doi.org/10.1007/JHEP04(2024)003
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DOI: https://doi.org/10.1007/JHEP04(2024)003