Email RIS file
Bookmark
Report an Issue

Search for dark photons from neutral meson decays in p+p and d+Au collisions at √s<sub>NN</sub> = 200 GeV [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy. Office of Science, 2015.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description:
Article numbers 031,901(R) : digital, PDF file
Additional Creators:
Brookhaven National Laboratory, United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access:
Free-to-read Unrestricted online access
Summary:
In this study, 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. 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 O(2×10⁻⁶) on U-γ mixing at 90% CL for the mass range 30 < mU < 90 MeV/c². 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.
Report Numbers:
E 1.99:bnl--108066-2015-ja
bnl--108066-2015-ja
Subject(s):
Other Subject(s):
Note:
Published through SciTech Connect.
03/10/2015.
"bnl--108066-2015-ja"
"KB0201021"
Physical Review. C, Nuclear Physics 91 3 ISSN 0556-2813; PRVCAN AM
Adare, A.; Afanasiev, S.; Aidala, C.; Ajitanand, N.; Akiba, Y.; Akimoto, R.; Al-Bataineh, H.; Al-Ta'ani, H.; Alexander, J.; Alfred, M.; Andrews, K.; Angerami, A.; Aoki, K.; Apadula, N.; Aphecetche, L.; Appelt, E.; Aramaki, Y.; Armendariz, R.; Asai, J.; Asano, H.; Aschenauer, E.; Atomssa, E.; Averbeck, R.; Awes, T.; Azmoun, B.; et al.
Funding Information:
NK101428
View MARC record | catkey: 23504272