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Blast from the past: constraints on the dark sector from the BEBC WA66 beam dump experiment

Abstract:
We derive limits on millicharged dark states, as well as particles with electric or magnetic dipole moments, from the number of observed forward electron scattering events at the Big European Bubble Chamber in the 1982 CERN-WA-066 beam dump experiment. The dark states are produced by the 400~GeV proton beam primarily through the decays of mesons produced in the beam dump, and the lack of excess events places bounds extending up to GeV masses. These improve on bounds from all other experiments, in particular CHARM~II.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.21468/SciPostPhys.10.2.043

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Oxford college:
Linacre College
Role:
Author
ORCID:
0000-0002-3542-858X


Publisher:
SciPost
Journal:
SciPost Physics More from this journal
Volume:
10
Issue:
2
Article number:
43
Publication date:
2021-02-19
Acceptance date:
2021-02-10
DOI:
EISSN:
2542-4653


Language:
English
Pubs id:
1146109
Local pid:
pubs:1146109
Deposit date:
2021-02-11

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