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Search for dark photons from neutral meson decays in p+p and d+Au collisions at √sNN = 200 GeV
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...
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| Published in: | Physical review. C, Nuclear physics Nuclear physics, 2015-03, Vol.91 (3) |
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| container_title | Physical review. C, Nuclear physics |
| container_volume | 91 |
| creator | 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. |
| description | 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 |
| doi_str_mv | 10.1103/PhysRevC.91.031901 |
| format | article |
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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.</creator><creatorcontrib>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. ; Brookhaven National Laboratory (BNL), Upton, NY (United States) ; Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)</creatorcontrib><description>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.</description><identifier>ISSN: 0556-2813</identifier><identifier>EISSN: 1089-490X</identifier><identifier>DOI: 10.1103/PhysRevC.91.031901</identifier><language>eng</language><publisher>United States: American Physical Society (APS)</publisher><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; detector ; energies ; NUCLEAR PHYSICS AND RADIATION PHYSICS ; proton ; rays</subject><ispartof>Physical review. 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S.</creatorcontrib><creatorcontrib>Winter, D.</creatorcontrib><creatorcontrib>Wright, R. M.</creatorcontrib><creatorcontrib>Xie, W.</creatorcontrib><creatorcontrib>Yalcin, S.</creatorcontrib><creatorcontrib>Yamaura, K.</creatorcontrib><creatorcontrib>Yang, R.</creatorcontrib><creatorcontrib>Brookhaven National Laboratory (BNL), Upton, NY (United States)</creatorcontrib><creatorcontrib>Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)</creatorcontrib><title>Search for dark photons from neutral meson decays in p+p and d+Au collisions at √sNN = 200 GeV</title><title>Physical review. C, Nuclear physics</title><description>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.</description><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>detector</subject><subject>energies</subject><subject>NUCLEAR PHYSICS AND RADIATION PHYSICS</subject><subject>proton</subject><subject>rays</subject><issn>0556-2813</issn><issn>1089-490X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNotjEtOwzAUAC0EEqVwAVZPbKsUPzs_L1hUES1IVUH8xK44_iiB1I5iF6k34Awcj5MAgtnMaoaQU6RTRMrPb5tduDPv1VTglHIUFPfICGkpklTQ530yolmWJ6xEfkiOQnilP3Cej8jLvZGDasD6AbQc3qBvfPQugB38BpzZxkF2sDHBO9BGyV2A1kE_6UE6DXoy24LyXdeG9jeSEb4-PsNqBRfAKIWFeTomB1Z2wZz8e0we55cP1VWyvFlcV7Nl4jDFmNQoU6Ss1Fallgkhcqvz2pq8pFYqZmpVWKmzQjOFdVEUghuaCWSpNtLmqeBjcvb39SG266DaaFSjvHNGxTViWbIM-Tecslfb</recordid><startdate>20150310</startdate><enddate>20150310</enddate><creator>Akimoto, R.</creator><creator>Alfred, M.</creator><creator>Appelt, E.</creator><creator>Asai, J.</creator><creator>Averbeck, R.</creator><creator>Baksay, G.</creator><creator>Barnes, P. 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M.</creator><creator>Xie, W.</creator><creator>Yalcin, S.</creator><creator>Yamaura, K.</creator><creator>Yang, R.</creator><general>American Physical Society (APS)</general><scope>OIOZB</scope><scope>OTOTI</scope></search><sort><creationdate>20150310</creationdate><title>Search for dark photons from neutral meson decays in p+p and d+Au collisions at √sNN = 200 GeV</title><author>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.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-n141t-b1a41028dfc4f29996fd6bfe680fac2ebc7fad57d2c1b77793e059124deaf6493</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>detector</topic><topic>energies</topic><topic>NUCLEAR PHYSICS AND RADIATION PHYSICS</topic><topic>proton</topic><topic>rays</topic><toplevel>online_resources</toplevel><creatorcontrib>Akimoto, R.</creatorcontrib><creatorcontrib>Alfred, M.</creatorcontrib><creatorcontrib>Appelt, E.</creatorcontrib><creatorcontrib>Asai, J.</creatorcontrib><creatorcontrib>Averbeck, R.</creatorcontrib><creatorcontrib>Baksay, G.</creatorcontrib><creatorcontrib>Barnes, P. D.</creatorcontrib><creatorcontrib>Bassalleck, B.</creatorcontrib><creatorcontrib>Ben-Benjamin, J.</creatorcontrib><creatorcontrib>Camacho, C. M.</creatorcontrib><creatorcontrib>Campbell, S.</creatorcontrib><creatorcontrib>Castera, P.</creatorcontrib><creatorcontrib>Churyn, A.</creatorcontrib><creatorcontrib>Cole, B. A.</creatorcontrib><creatorcontrib>Constantin, P.</creatorcontrib><creatorcontrib>Dehmelt, K.</creatorcontrib><creatorcontrib>Deshpande, A.</creatorcontrib><creatorcontrib>Desmond, E. J.</creatorcontrib><creatorcontrib>Ding, L.</creatorcontrib><creatorcontrib>Drees, K. A.</creatorcontrib><creatorcontrib>Durum, A.</creatorcontrib><creatorcontrib>Efremenko, Y. V.</creatorcontrib><creatorcontrib>Fields, D. E.</creatorcontrib><creatorcontrib>Fleuret, F.</creatorcontrib><creatorcontrib>Franz, A.</creatorcontrib><creatorcontrib>Fujiwara, K.</creatorcontrib><creatorcontrib>Garg, P.</creatorcontrib><creatorcontrib>Gong, X.</creatorcontrib><creatorcontrib>Grosse Perdekamp, M.</creatorcontrib><creatorcontrib>Hachiya, T.</creatorcontrib><creatorcontrib>Haggerty, J. S.</creatorcontrib><creatorcontrib>Hahn, K. I.</creatorcontrib><creatorcontrib>Hamagaki, H.</creatorcontrib><creatorcontrib>Holzmann, W.</creatorcontrib><creatorcontrib>Hori, Y.</creatorcontrib><creatorcontrib>Hoshino, T.</creatorcontrib><creatorcontrib>Ishihara, M.</creatorcontrib><creatorcontrib>Issah, M.</creatorcontrib><creatorcontrib>Jeon, S. J.</creatorcontrib><creatorcontrib>Kang, J. S.</creatorcontrib><creatorcontrib>Kasai, M.</creatorcontrib><creatorcontrib>Khachatryan, V.</creatorcontrib><creatorcontrib>Kijima, K. M.</creatorcontrib><creatorcontrib>Kim, D. H.</creatorcontrib><creatorcontrib>Kim, S. H.</creatorcontrib><creatorcontrib>Kim, Y. J.</creatorcontrib><creatorcontrib>Kim, Y. K.</creatorcontrib><creatorcontrib>Koblesky, T.</creatorcontrib><creatorcontrib>Lee, S. H.</creatorcontrib><creatorcontrib>Lichtenwalner, P.</creatorcontrib><creatorcontrib>Liebing, P.</creatorcontrib><creatorcontrib>Maguire, C. F.</creatorcontrib><creatorcontrib>Manion, A.</creatorcontrib><creatorcontrib>Masui, H.</creatorcontrib><creatorcontrib>Means, N.</creatorcontrib><creatorcontrib>Meles, A.</creatorcontrib><creatorcontrib>Meredith, B.</creatorcontrib><creatorcontrib>Mitchell, J. T.</creatorcontrib><creatorcontrib>Moon, H. J.</creatorcontrib><creatorcontrib>Motschwiller, S.</creatorcontrib><creatorcontrib>Nam, S.</creatorcontrib><creatorcontrib>Nguyen, M.</creatorcontrib><creatorcontrib>Niida, T.</creatorcontrib><creatorcontrib>Nouicer, R.</creatorcontrib><creatorcontrib>Novitzky, N.</creatorcontrib><creatorcontrib>Nyanin, A. S.</creatorcontrib><creatorcontrib>Orjuela Koop, J. D.</creatorcontrib><creatorcontrib>Park, B. H.</creatorcontrib><creatorcontrib>Park, S.</creatorcontrib><creatorcontrib>Perry, J.</creatorcontrib><creatorcontrib>Pisani, R. P.</creatorcontrib><creatorcontrib>Purschke, M. L.</creatorcontrib><creatorcontrib>Richardson, E.</creatorcontrib><creatorcontrib>Roche, G.</creatorcontrib><creatorcontrib>Rosati, M.</creatorcontrib><creatorcontrib>Rosen, C. A.</creatorcontrib><creatorcontrib>Sato, T.</creatorcontrib><creatorcontrib>Savastio, M.</creatorcontrib><creatorcontrib>Semenov, V.</creatorcontrib><creatorcontrib>Shigaki, K.</creatorcontrib><creatorcontrib>Shukla, P.</creatorcontrib><creatorcontrib>Silva, C. L.</creatorcontrib><creatorcontrib>Sourikova, I. V.</creatorcontrib><creatorcontrib>Suire, C.</creatorcontrib><creatorcontrib>Sumita, T.</creatorcontrib><creatorcontrib>Tomášek, L.</creatorcontrib><creatorcontrib>Tomita, Y.</creatorcontrib><creatorcontrib>Towell, M.</creatorcontrib><creatorcontrib>Vargyas, M.</creatorcontrib><creatorcontrib>Velkovska, J.</creatorcontrib><creatorcontrib>Vértesi, R.</creatorcontrib><creatorcontrib>Vrba, V.</creatorcontrib><creatorcontrib>Watanabe, Y.</creatorcontrib><creatorcontrib>Watanabe, Y. S.</creatorcontrib><creatorcontrib>Winter, D.</creatorcontrib><creatorcontrib>Wright, R. M.</creatorcontrib><creatorcontrib>Xie, W.</creatorcontrib><creatorcontrib>Yalcin, S.</creatorcontrib><creatorcontrib>Yamaura, K.</creatorcontrib><creatorcontrib>Yang, R.</creatorcontrib><creatorcontrib>Brookhaven National Laboratory (BNL), Upton, NY (United States)</creatorcontrib><creatorcontrib>Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)</creatorcontrib><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Physical review. C, Nuclear physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Akimoto, R.</au><au>Alfred, M.</au><au>Appelt, E.</au><au>Asai, J.</au><au>Averbeck, R.</au><au>Baksay, G.</au><au>Barnes, P. D.</au><au>Bassalleck, B.</au><au>Ben-Benjamin, J.</au><au>Camacho, C. M.</au><au>Campbell, S.</au><au>Castera, P.</au><au>Churyn, A.</au><au>Cole, B. A.</au><au>Constantin, P.</au><au>Dehmelt, K.</au><au>Deshpande, A.</au><au>Desmond, E. J.</au><au>Ding, L.</au><au>Drees, K. A.</au><au>Durum, A.</au><au>Efremenko, Y. V.</au><au>Fields, D. E.</au><au>Fleuret, F.</au><au>Franz, A.</au><au>Fujiwara, K.</au><au>Garg, P.</au><au>Gong, X.</au><au>Grosse Perdekamp, M.</au><au>Hachiya, T.</au><au>Haggerty, J. S.</au><au>Hahn, K. I.</au><au>Hamagaki, H.</au><au>Holzmann, W.</au><au>Hori, Y.</au><au>Hoshino, T.</au><au>Ishihara, M.</au><au>Issah, M.</au><au>Jeon, S. J.</au><au>Kang, J. S.</au><au>Kasai, M.</au><au>Khachatryan, V.</au><au>Kijima, K. M.</au><au>Kim, D. H.</au><au>Kim, S. H.</au><au>Kim, Y. J.</au><au>Kim, Y. K.</au><au>Koblesky, T.</au><au>Lee, S. H.</au><au>Lichtenwalner, P.</au><au>Liebing, P.</au><au>Maguire, C. F.</au><au>Manion, A.</au><au>Masui, H.</au><au>Means, N.</au><au>Meles, A.</au><au>Meredith, B.</au><au>Mitchell, J. T.</au><au>Moon, H. J.</au><au>Motschwiller, S.</au><au>Nam, S.</au><au>Nguyen, M.</au><au>Niida, T.</au><au>Nouicer, R.</au><au>Novitzky, N.</au><au>Nyanin, A. S.</au><au>Orjuela Koop, J. D.</au><au>Park, B. H.</au><au>Park, S.</au><au>Perry, J.</au><au>Pisani, R. P.</au><au>Purschke, M. L.</au><au>Richardson, E.</au><au>Roche, G.</au><au>Rosati, M.</au><au>Rosen, C. A.</au><au>Sato, T.</au><au>Savastio, M.</au><au>Semenov, V.</au><au>Shigaki, K.</au><au>Shukla, P.</au><au>Silva, C. L.</au><au>Sourikova, I. V.</au><au>Suire, C.</au><au>Sumita, T.</au><au>Tomášek, L.</au><au>Tomita, Y.</au><au>Towell, M.</au><au>Vargyas, M.</au><au>Velkovska, J.</au><au>Vértesi, R.</au><au>Vrba, V.</au><au>Watanabe, Y.</au><au>Watanabe, Y. S.</au><au>Winter, D.</au><au>Wright, R. M.</au><au>Xie, W.</au><au>Yalcin, S.</au><au>Yamaura, K.</au><au>Yang, R.</au><aucorp>Brookhaven National Laboratory (BNL), Upton, NY (United States)</aucorp><aucorp>Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Search for dark photons from neutral meson decays in p+p and d+Au collisions at √sNN = 200 GeV</atitle><jtitle>Physical review. C, Nuclear physics</jtitle><date>2015-03-10</date><risdate>2015</risdate><volume>91</volume><issue>3</issue><issn>0556-2813</issn><eissn>1089-490X</eissn><abstract>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.</abstract><cop>United States</cop><pub>American Physical Society (APS)</pub><doi>10.1103/PhysRevC.91.031901</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0556-2813 |
| ispartof | Physical review. C, Nuclear physics, 2015-03, Vol.91 (3) |
| issn | 0556-2813 1089-490X |
| language | eng |
| recordid | cdi_osti_scitechconnect_1188251 |
| source | American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list) |
| subjects | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS detector energies NUCLEAR PHYSICS AND RADIATION PHYSICS proton rays |
| title | Search for dark photons from neutral meson decays in p+p and d+Au collisions at √sNN = 200 GeV |
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