Search for dark photons from neutral meson decays in p plus p and d plus Au collisions at root s(NN)=200 GeV

A Adare,Serguei Afanasiev, C Aidala,N N Ajitanand,Y Akiba,Ryoichi Akimoto,H Albataineh,H Altaani,John M Alexander,M Alfred,K R Andrews, A Angerami,Katsunori Aoki,N Apadula, L Aphecetche,Eric Appelt,Y Aramaki,R Armendariz,J Asai, Hiroki Asano,E C Aschenauer,E T Atomssa, R Averbeck, T C Awes,B Azmoun,V Babintsev,M Bai,G Baksay,L Baksay, A Baldisseri,N S Bandara,B Bannier,K N Barish,P D Barnes,B Bassalleck,Austin Basye,S Bathe,S Batsouli,V Baublis,C Baumann,A Bazilevsky,M Beaumier, S Beckman,S Belikov,R Belmont, J Benbenjamin,Raymond D Bennett,A Berdnikov,Y Berdnikov,Jihyun Bhom,A A Bickley,Douglas L Black, D Blau,J G Boissevain,J S Bok,H Borel,K Boyle,M L Brooks, D Broxmeyer,J Bryslawskyj,H Buesching,V Bumazhnov,G Bunce,S Butsyk,C M Camacho,S Campbell,A Caringi, P Castera,B S Chang,W C Chang,J L Charvet,C H Chen,S Chernichenko,C Y Chi,Minsen Chiu,I J Choi,Jae Bong Choi, R K Choudhury,Peter Christiansen, T Chujo,P Chung,A Churyn,O Chvala,V Cianciolo,Zvi Hirsh Citron,B A Cole,Z Conesa Del Valle,M Connors,P Constantin,M Csanad, T Csoergo, T Dahms,S Dairaku,I Danchev,K Das, A Datta, M Daugherity,G David,M K Dayananda,K Deblasio,K Dehmelt,A Denisov, D Denterria,A Deshpande,E J Desmond,K V Dharmawardane,O Dietzsch, Luna Ding,A Dion,Jae Hyuk Do, M Donadelli,O Drapier,A Drees,K A Drees,A K Dubey,J M Durham,A Durum,Dipanwita Dutta,V Dzhordzhadze,L Dorazio,S Edwards,Y V Efremenko, F Ellinghaus,T Engelmore,A Enokizono,H Enyo, S Esumi,K O Eyser,B Fadem,N Feege,D E Fields,M Finger,F Fleuret,S L Fokin,Z Fraenkel,J E Frantz,A Franz,A D Frawley,Keiichi Fujiwara,Yoshio Fukao,T Fusayasu,C Gal, P Gallus,Pankaj Garg,I Garishvili, H Ge, F Giordano,A Glenn,Haimei Gong,X Gong,M Gonin,J Gosset, Yasunobu Goto,R Granier De Cassagnac,N Grau,S V Greene,G Grim,M Grosse Perdekamp, Ying Gu,T Gunji, Linlin Guo,H Guragain,Hansake Gustafsson,T Hachiya,A Hadj Henni,J S Haggerty,K I Hahn, H Hamagaki,J Hamblen, R Han,Soon Young Han,J Hanks,Caryn R Harper,E P Hartouni,K Haruna,Satoshi Hasegawa, Kenich Hashimoto,E Haslum, R S Hayano,X He,M Heffner,T K Hemmick,T Hester, J C Hill, M Hohlmann,R S Hollis,W Holzmann,K Homma,Byungyou Hong,T Horaguchi,Y Hori,D Hornback,Tsutomu Hoshino,Jiunlang Huang, Shyhjier Huang,T Ichihara,R Ichimiya,H Iinuma,Yasushi Ikeda,Kenichi Imai,Y Imazu,J Imrek,M Inaba,A Iordanova,D Isenhower,Masaki Ishihara,T Isobe,M Issah,A Isupov,D Ivanischev,D Ivanishchev,Yoshitaka Iwanaga,B V Jacak, S J Jeon,M Jezghani,Junfeng Jia, Xu Jiang,J Jin, Don St John,B M Johnson, T R Jones,Eunjeong Joo, K S Joo,D Jouan,D S Jumper,F Kajihara,S Kametani,N Kamihara,J Kamin,S Kaneti,B H Kang,J H Kang, J S Kapustinsky,K Karatsu,Misato Kasai,D Kawall,M Kawashima,A V Kazantsev,T Kempel,J A Key,V Khachatryan,A Khanzadeev, Koichi Kihara,K M Kijima,Jun Kikuchi,A Kim,Byeong Il Kim, Christopher Kim,Dae Jung Kim,Eun Jin Kim,Hae Jin Kim,Myounghwan Kim,Sun Hwa Kim,Y J Kim, E Kinney,K Kiriluk,A Kiss,E Kistenev,J Klatsky,J Klay,C Kleinboesing,D Kleinjan,P Kline,T Koblesky,L Kochenda,Monika Kofarago,B Komkov,M Konno,Jan Koster,D Kotov, A Kozlov, A Kral,A Kravitz,G J Kunde,K Kurita,Motohiro Kurosawa,M J Kweon,Y Kwon,G S Kyle,R Lacey,Yue Shi Lai,J G Lajoie,D Layton,A A Lebedev, D M Lee,J Lee,Kyong Sei Lee,S H Lee,Taehee Lee,M J Leitch, M A L Leite, M Leitgab, B Lenzi,Xin Li,P Lichtenwalner,P Liebing,Se Hun Lim, L A Linden Levy,T Liska,A Litvinenko,Hui Liu,M X Liu,B Love,David A Lynch, C Maguire,Y I Makdisi,M Makek,Alexander Malakhov,M D Malik, A Manion,V I Manko, Eric James Mannel,Y Mao,L Masek,H Masui,F Matathias,M Mccumber,P L Mcgaughey,D Mcglinchey,C Mckinney,N Means, A Meles,M Mendoza,B Meredith, Y Miake,T Mibe, A C Mignerey,P Mikes,Kunio Miki, Andrew Miller, A Milov,D K Mishra,M Mishra,J T Mitchell,Y Miyachi,S Miyasaka, Seiji Mizuno, A K Mohanty,P Montuenga,Hee Jung Moon,Taebong Moon,Y Morino,A Morreale

PHYSICAL REVIEW C（2015）

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摘要

The standard model (SM) of particle physics is spectacularly successful, yet the measured value of the muon anomalous magnetic moment (g - 2)mu deviates from SM calculations by 3.6 sigma. 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. The PHENIX experiment at the Relativistic Heavy Ion Collider has searched for a dark photon, U, in pi(0), eta -> gamma e(+)e(-) decays and obtained upper limits of O(2 x 10(-6)) on U-gamma mixing at 90% C.L. for the mass range 30 < m(U) < 90 MeV/c(2). Combined with other experimental limits, the remaining region in the U-gamma mixing parameter space that can explain the (g - 2)(mu) deviation from its SM value is nearly completely excluded at the 90% confidence level, with only a small region of 29 < m(U) < 32 MeV/c(2) remaining.

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