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New physics suggested by Atomki anomaly

New physics suggested by Atomki anomaly
New physics suggested by Atomki anomaly

We consider several extensions of the Standard Model (SM) which can explain the anomalies observed by the Atomki collaboration in the decay of excited states of Beryllium via a new boson with a mass around 17 MeV yielding e+e- pairs. We show how both spin-0 and 1 solutions are possible and describe the Beyond the SM (BSM) scenarios that can accommodate these. They include BSM frameworks with either an enlarged Higgs, or gauge sector, or both.

2HDM, Atomki anomaly, Low scale, U(1), Z'
0429-7725
Rose, Luigi Delle
fae9e612-f9b9-459f-9bff-2cbac09f2fb2
Khalil, Shaaban
2320836f-4666-474a-9aa4-bdfe6eb086b7
King, Simon J.D.
2e855764-14d3-4bdb-b0d9-e0659b969a3b
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Rose, Luigi Delle
fae9e612-f9b9-459f-9bff-2cbac09f2fb2
Khalil, Shaaban
2320836f-4666-474a-9aa4-bdfe6eb086b7
King, Simon J.D.
2e855764-14d3-4bdb-b0d9-e0659b969a3b
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614

Rose, Luigi Delle, Khalil, Shaaban, King, Simon J.D. and Moretti, Stefano (2019) New physics suggested by Atomki anomaly. Frontiers in Physics, 7 (May). (doi:10.3389/fphy.2019.00073).

Record type: Review

Abstract

We consider several extensions of the Standard Model (SM) which can explain the anomalies observed by the Atomki collaboration in the decay of excited states of Beryllium via a new boson with a mass around 17 MeV yielding e+e- pairs. We show how both spin-0 and 1 solutions are possible and describe the Beyond the SM (BSM) scenarios that can accommodate these. They include BSM frameworks with either an enlarged Higgs, or gauge sector, or both.

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More information

Accepted/In Press date: 23 April 2019
e-pub ahead of print date: 15 May 2019
Keywords: 2HDM, Atomki anomaly, Low scale, U(1), Z'

Identifiers

Local EPrints ID: 431803
URI: https://eprints.soton.ac.uk/id/eprint/431803
ISSN: 0429-7725
PURE UUID: cbb95785-5107-42cb-8d2f-c5c5d16b84f8

Catalogue record

Date deposited: 18 Jun 2019 16:30
Last modified: 09 Dec 2019 17:35

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