Document Type

Article

Publication Date

2023

DOI

10.1103/PhysRevD.108.012015

Publication Title

Physical Review D

Volume

108

Issue

1

Pages

012015 (1-27)

Abstract

The heavy photon search experiment (HPS) at the Thomas Jefferson National Accelerator Facility searches for electroproduced dark photons. We report results from the 2016 engineering run consisting of 10 608  nb−1 of data for both the prompt and displaced vertex searches. A search for a prompt resonance in the e+e− invariant mass distribution between 39 and 179 MeV showed no evidence of dark photons above the large QED background, limiting the coupling of ε2≳10−5, in agreement with previous searches. The search for displaced vertices showed no evidence of excess signal over background in the masses between 60 and 150 MeV, but had insufficient luminosity to limit canonical heavy photon production. This is the first displaced vertex search result published by HPS. HPS has taken high-luminosity data runs in 2019 and 2021 that will explore new dark photon phase space.

Rights

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Original Publication Citation

Adrian, P. H., Baltzell, N. A., Battaglieri, M., Bondí, M., Boyarinov, S., Bravo, C., Bueltmann, S., Butti, P., Burkert, V. D., Calvo, D., Cao, T., Carpinelli, M., Celentano, A., Charles, G., Colaneri, L., Cooper, W., Crowe, B., Cuevas, C., D’Angelo, A., . . . Wojtsekhowski, B. (2023). Searching for prompt and long-lived dark photons in electroproduced e⁺ e⁻ pairs with the heavy photon search experiment at JLab. Physical Review D, 108(1), 1-27, Article 012015. https://doi.org/10.1103/PhysRevD.108.012015

ORCID

0000-0001-5416-2900 (Weinstein)

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