Details

Autor(en) / Beteiligte

• Lees, J P
• Tisserand, V
• Stugu, B
• Feng, M
• Hearty, C
• Khan, A
• Kravchenko, E A
• Serednyakov, S I
• Skovpen, Yu I
• Gary, J W
• Long, O
• Kovalskyi, D
• Richman, J D
• West, C A
• Eisner, A M
• Seiden, A
• Chao, D S
• Cheng, C H
• Flood, K T
• Miyashita, T S
• Sokoloff, M D
• Sun, L
• Bloom, P C
• Wagner, S R
• Toki, W H
• Spaan, B
• Playfer, S
• Finocchiaro, G
• Robutti, E
• Bhuyan, B
• Prasad, V
• Adametz, A
• Uwer, U
• Lacker, H M
• Chen, C
• Malaescu, B
• Gabathuler, E
• Cowan, G
• Fritsch, M
• Griessinger, K
• Hafner, A
• Jawahery, A
• Roberts, D A
• Cheaib, R
• Robertson, S H
• Sonnek, P
• Jessop, C P
• Kass, R
• Margoni, M
• Morandin, M
• Simi, G
• Simonetto, F
• Stroili, R
• Akar, S
• Ben-Haim, E
• Leruste, Ph
• Rossi, A
• Casarosa, G
• Oberhof, B
• Paoloni, E
• Walsh, J J
• Lopes Pegna, D
• Faccini, R
• Ferrarotto, F
• Gaspero, M
• Dittrich, S
• Hess, M
• Leddig, T
• Voß, C
• Wilson, F F
• Emery, S
• Innes, W R
• Kim, P
• Luitz, S
• Lynch, H L
• MacFarlane, D B
• Neal, H
• Salnikov, A A
• Sullivan, M K
• Randle-Conde, A
• Bellis, M
• Peimer, D R
• Ritchie, J L
• Schwitters, R F
• Wray, B C
• Lou, X C
• De Mori, F
• Gamba, D
• Vitale, L
• Oyanguren, A
• Beaulieu, A
• Choi, H H F
• Lueck, T
• Nugent, I M
• Harrison, P F
• Latham, T E
• Band, H R
• Dasu, S
• Pan, Y
• Prepost, R

Titel

Search for a dark photon in e(+)e(-) collisions at BABAR

Ist Teil von

• Physical review letters, 2014-11, Vol.113 (20), p.201801-201801, Article 201801

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2014

Quelle

APS: American Physical Society E-Journals (Physics)

Beschreibungen/Notizen

• Dark sectors charged under a new Abelian interaction have recently received much attention in the context of dark matter models. These models introduce a light new mediator, the so-called dark photon (A^{'}), connecting the dark sector to the standard model. We present a search for a dark photon in the reaction e^{+}e^{-}→γA^{'}, A^{'}→e^{+}e^{-}, μ^{+}μ^{-} using 514  fb^{-1} of data collected with the BABAR detector. We observe no statistically significant deviations from the standard model predictions, and we set 90% confidence level upper limits on the mixing strength between the photon and dark photon at the level of 10^{-4}-10^{-3} for dark photon masses in the range 0.02-10.2  GeV. We further constrain the range of the parameter space favored by interpretations of the discrepancy between the calculated and measured anomalous magnetic moment of the muon.