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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F15%3A00226944" target="_blank" >RIV/68407700:21340/15:00226944 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1103/PhysRevC.91.031901" target="_blank" >http://dx.doi.org/10.1103/PhysRevC.91.031901</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.91.031901" target="_blank" >10.1103/PhysRevC.91.031901</a>

Result language

angličtina

Original language name

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

Original language description

The standard model (SM) of particle physics is spectacularly successful, yet the measured value of the muon anomalous magnetic moment (g-2) ? deviates from SM calculations by 3.6?. 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 ? 0 ,?->?e + e - decays and obtained upper limits of O(2x10 -6 ) on U-?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-? mixing parameter space that can explain the (g-2) ? 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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BF - Elementary particle theory and high energy physics

OECD FORD branch

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Project

<a href="/en/project/LG13031" target="_blank" >LG13031: Collaboration of the Czech Republic with CERN</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review C

ISSN

0556-2813

e-ISSN

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Volume of the periodical

91

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

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UT code for WoS article

000352021800001

EID of the result in the Scopus database

2-s2.0-84924385953