Spin Correlations in Dark Photon Searches
ORAL
Abstract
The ForwArd Search ExpeRiment (FASER) searches for dark photons that are produced in the decays of neutral pions and eta mesons and decay into fermion-antifermion pairs. Dark photons are massive gauge bosons of broken U(1)D symmetry, presenting a remarkably simple extension to the standard model. Previous analyses have neglected spin correlations in signal event generation; however, because the dark photon has non-zero spin, such spin correlations exist. We analytically calculate the cross-section for these decays within the narrow-width approximation, and compare the results with and without spin correlations. We find that spin correlations are not a significant effect on existing dark photon searches.
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Publication: Planned paper: Spin Correlations in Dark Photon Searches with Jonathan Feng, Misa Toman and Eli Welch.
Presenters
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Misa Z Toman
University of California, Irvine
Authors
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Misa Z Toman
University of California, Irvine
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Jonathan L Feng
University of California, Irvine
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Eli M Welch
University of California, Irvine