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Title Searching for Prompt and Long-Lived Dark Photons in Electro-Produced e+e- Pairs with the Heavy Photon Search Experiment at JLab
Abstract The Heavy Photon Search experiment (HPS) at the Thomas Jefferson National Accelerator Fa- cility searches for electro-produced 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 ?2 ? 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.
Author(s) P. Adrian, N.A. Baltzell, M. Battaglieri, Mariangela Bondi, S. Boyarinov, C. Bravo, S. Bueltmann, P. Butti, Volker Burkert, D. Calvo, T. Cao, M. Carpinelli, A. Celentano, G. Charles, L. Colaneri, W. Cooper, C. Cuevas, A. D’Angelo, N. Dashyan, M. De Napoli, R. De Vita, A. Deur, M. Diamond, R. Dupre, H. Egiyan, L. Elouadrhiri, R. Essig, V. Fadeyev, C. Field, A. Filippi, A. Freyberger, M. Garcon, N. Gevorgyan, F.-X. Girod, N. Graf, M. Graham, K. Griffioen, A. Grillo, M. Guidal, R. Herbst, M. Holtrop, J. Jaros, R. Johnson, G. Kalicy, M. Khandaker, V. Kubarovsky, E. Leonora, K. Livingston, L. Marsicano, T. Maruyama, S. McCarty, J. McCormick, B. McKinnon, K. Moffeit, O. Moreno, C. Munoz-Camacho, T. Nelson, S. Niccolai, A. Odian, M. Oriunno, M. Osipenko, R. Paremuzyan, S. Paul, N. Randazzo, B. Raydo, B. Reese, A. Rizzo, P. Schuster, Y. Sharabian, G. Simi, A. Simonyan, V. Sipala, A. Spellman, D. Sokhan, M. Solt, S. Stepanyan, H. Szumila-Vance, N. Toro, S. Uemura, Murizio Ungaro, H. Voskanyan, L. Weinstein, Bogdan Wojtsekhowski, B. Yale
Publication Date July 2023
Document Type Journal Article
Primary Institution Thomas Jefferson National Accelerator Facility, Newport News
Affiliation Exp Nuclear Physics / Experimental Halls / Hall B
Funding Source High Energy Physics (HEP), NP
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-PHY-23-3738 OSTI Number: 1992359
LANL Number: Other Number: DOE/OR/23177-5671
Associated with an experiment Yes
Experiment Number(s)
E12-11-006
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Journal Article
Journal Name Physical Review D
Refereed Yes
Volume 108
Issue
Page(s) 012015
Attachments/Datasets/DOI Link
Document(s)
PhysRevD.108.012015.pdf (Accepted Manuscript)
DOI Link
Dataset(s) (none)
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