Details

Autor(en) / Beteiligte

• Akimoto, R.
• Alfred, M.
• Appelt, E.
• Asai, J.
• Averbeck, R.
• Baksay, G.
• Barnes, P. D.
• Bassalleck, B.
• Ben-Benjamin, J.
• Camacho, C. M.
• Campbell, S.
• Castera, P.
• Churyn, A.
• Cole, B. A.
• Constantin, P.
• Dehmelt, K.
• Deshpande, A.
• Desmond, E. J.
• Ding, L.
• Drees, K. A.
• Durum, A.
• Efremenko, Y. V.
• Fields, D. E.
• Fleuret, F.
• Franz, A.
• Fujiwara, K.
• Garg, P.
• Gong, X.
• Grosse Perdekamp, M.
• Hachiya, T.
• Haggerty, J. S.
• Hahn, K. I.
• Hamagaki, H.
• Holzmann, W.
• Hori, Y.
• Hoshino, T.
• Ishihara, M.
• Issah, M.
• Jeon, S. J.
• Kang, J. S.
• Kasai, M.
• Khachatryan, V.
• Kijima, K. M.
• Kim, D. H.
• Kim, S. H.
• Kim, Y. J.
• Kim, Y. K.
• Koblesky, T.
• Lee, S. H.
• Lichtenwalner, P.
• Liebing, P.
• Maguire, C. F.
• Manion, A.
• Masui, H.
• Means, N.
• Meles, A.
• Meredith, B.
• Mitchell, J. T.
• Moon, H. J.
• Motschwiller, S.
• Nam, S.
• Nguyen, M.
• Niida, T.
• Nouicer, R.
• Novitzky, N.
• Nyanin, A. S.
• Orjuela Koop, J. D.
• Park, B. H.
• Park, S.
• Perry, J.
• Pisani, R. P.
• Purschke, M. L.
• Richardson, E.
• Roche, G.
• Rosati, M.
• Rosen, C. A.
• Sato, T.
• Savastio, M.
• Semenov, V.
• Shigaki, K.
• Shukla, P.
• Silva, C. L.
• Sourikova, I. V.
• Suire, C.
• Sumita, T.
• Tomášek, L.
• Tomita, Y.
• Towell, M.
• Vargyas, M.
• Velkovska, J.
• Vértesi, R.
• Vrba, V.
• Watanabe, Y.
• Watanabe, Y. S.
• Winter, D.
• Wright, R. M.
• Xie, W.
• Yalcin, S.
• Yamaura, K.
• Yang, R.

Titel

Search for dark photons from neutral meson decays in p+p and d+Au collisions at √sNN = 200 GeV

Ist Teil von

• Physical review. C, Nuclear physics, 2015-03, Vol.91 (3)

Ort / Verlag

United States: American Physical Society (APS)

Erscheinungsjahr

2015

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• The standard model (SM) of particle physics is spectacularly successful, yet the measured value of the muon anomalous magnetic moment (g-2)μ deviates from SM calculations by 3.6σ. Several theoretical models attribute this to the existence of a “dark photon,” an additional U(1) gauge boson, which is weakly coupled to ordinary photons. For this study, the PHENIX experiment at the Relativistic Heavy Ion Collider has searched for a dark photon, U, in π0,η→γe+e- decays and obtained upper limits of θ(2×10-6) on U-γ mixing at 90% C.L. for the mass range 30<mU<90 MeV/c2. Lastly, combined with other experimental limits, the remaining region in the U-γ mixing parameter space that can explain the (g-2)μ deviation from its SM value is nearly completely excluded at the 90% confidence level, with only a small region of 29<mU<32 MeV/c2 remaining.