Academic Journal
Limit on the production of a low-mass vector boson in e+e−→Uγ, U→e+e− with the KLOE experiment
| Title: | Limit on the production of a low-mass vector boson in e+e−→Uγ, U→e+e− with the KLOE experiment |
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| Authors: | A. Anastasi, D. Babusci, G. Bencivenni, M. Berlowski, C. Bloise, F. Bossi, P. Branchini, A. Budano, L. Caldeira Balkeståhl, B. Cao, F. Ceradini, P. Ciambrone, F. Curciarello, E. Czerwiński, G. D'Agostini, E. Danè, V. De Leo, E. De Lucia, A. De Santis, P. De Simone, A. Di Cicco, A. Di Domenico, R. Di Salvo, D. Domenici, A. D'Uffizi, A. Fantini, G. Felici, S. Fiore, A. Gajos, P. Gauzzi, G. Giardina, S. Giovannella, E. Graziani, F. Happacher, L. Heijkenskjöld, W. Ikegami Andersson, T. Johansson, D. Kamińska, W. Krzemien, A. Kupsc, S. Loffredo, G. Mandaglio, M. Martini, M. Mascolo, R. Messi, S. Miscetti, G. Morello, D. Moricciani, P. Moskal, A. Palladino, M. Papenbrock, A. Passeri, V. Patera, E. Perez del Rio, A. Ranieri, P. Santangelo, I. Sarra, M. Schioppa, M. Silarski, F. Sirghi, L. Tortora, G. Venanzoni, W. Wiślicki, M. Wolke |
| Source: | Physics Letters B, Vol 750, Iss C, Pp 633-637 (2015) |
| Publisher Information: | Elsevier, 2015. |
| Publication Year: | 2015 |
| Collection: | LCC:Physics |
| Subject Terms: | Dark matter, Dark forces, Dark photon, U boson, A′, Physics, QC1-999 |
| More Details: | The existence of a new force beyond the Standard Model is compelling because it could explain several striking astrophysical observations which fail standard interpretations. We searched for the light vector mediator of this dark force, the U boson, with the KLOE detector at the DAΦNE e+e− collider. Using an integrated luminosity of 1.54 fb−1, we studied the process e+e−→Uγ, with U→e+e−, using radiative return to search for a resonant peak in the dielectron invariant-mass distribution. We did not find evidence for a signal, and set a 90% CL upper limit on the mixing strength between the Standard Model photon and the dark photon, ε2, at 10−6–10−4 in the 5–520 MeV/c2 mass range. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 0370-2693 1873-2445 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S0370269315007546; https://doaj.org/toc/0370-2693; https://doaj.org/toc/1873-2445 |
| DOI: | 10.1016/j.physletb.2015.10.003 |
| Access URL: | https://doaj.org/article/4237d370b93c4207809bfa8f44eafd68 |
| Accession Number: | edsdoj.4237d370b93c4207809bfa8f44eafd68 |
| Database: | Directory of Open Access Journals |
| ISSN: | 03702693 18732445 |
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| DOI: | 10.1016/j.physletb.2015.10.003 |
| Published in: | Physics Letters B |
| Language: | English |