Dark forces coupled to nonconserved currents

By J. Dror, Robert Lasenby, M. Pospelov. 2017

160 citations recorded by the source corpus.

New light vectors with dimension-4 couplings to Standard Model states have (energy / vector mass)^2 enhanced production rates unless the current they couple to is conserved. These processes allow us to derive new constraints on the couplings of such vectors, that are significantly stronger than the previous literature for a wide variety of models. Examples include vectors with axial couplings to quarks and vectors coupled to currents (such as baryon number) that are only broken by the chiral anomaly. Our new limits arise from a range of processes, including rare Z decays and flavor changing meson decays, and rule out a number of phenomenologically-motivated proposals.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c0ebb3685b0f948d2822aa7936125c2dff17af5a

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Felix Kahlhoefer
2. K. Schmidt-Hoberg
3. P. Schuster
4. A. Berlin
5. G. Krnjaic
6. W. Xue
7. M. Dolan
8. N. Toro

In Nuclear and High Energy Physics

1. G. Krnjaic
2. Felix Kahlhoefer
3. P. Schuster
4. A. Berlin
5. K. Schmidt-Hoberg
6. N. Toro
7. Y. Soreq
8. Mike Williams

Citations in the corpus

• Serendipity in dark photon searches (2018, methodology): “ure 6. Constraints derived on visible Bdecays using the same experimental color scheme as in Fig.4. The grey constraints come from [93,94] and [71,95] decays, and from longitudinal-mode enhancements [68,69] in Bu;d!KX[96], K!ˇX[97,98], and Z!X [99,100] processes. The transparent grey constraints, wh”
• Revised constraints and Belle II sensitivity for visible and invisible axion-like particles (2017, background): “on fusion in section5.3. This work focuses on ALPs with mass below 10GeV, so that the decay a! Z is forbidden. The a Z interaction nevertheless plays an important role, as it leads to the decay Z! + a[28,49] with partial decay width given by ( Z! + a) = g2 a Z 384ˇ m2 Z 2 a m Z 3 : (2.9) Depending”
• Dark matter, millicharges, axion and scalar particles, gauge bosons, and other new physics with LDMX (2018, background): “We also show constraints derived from the observed ν̄−e scattering spectrum at TEXONO [112, 113], and for the baryonic current, U(1)B , bounds from considerations of enhanced anomalous decays intoZ ′ final states [61, 62].”