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Dark photons from displaced vertices

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Abstract

We investigate the unexplored regions of the dark photon parameter space to find a search strategy suitable to probe these. We show how displaced track searches at colliders with large 4pi trackers around the interaction point are excellent choices for exploring these uncharted regions. As an example, we study in detail the sensitivity of the Belle II trackers to dark photons which mediate interactions between the visible and dark sectors. We also show that the same strategy can be employed by other experiments to achieve the same goal.

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Data availability statement

Data sets generated during the current study are available from the corresponding author upon reasonable request.

Notes

  1. Even more so for the \(\Gamma _I=10\Gamma _V\) case which has not been shown in the figure.

  2. The conservative lower limit on the radial distance, \(r>10\) cm, that we allow ourselves effectively vetoes SM backgrounds from \(K_L\) and \(\Lambda\) decays and those from secondary interactions.

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Acknowledgements

The author acknowledges Sabyasachi Chakraborty and Sokratis Trifinopoulos for their contributions to the development of the analysis techniques and Igal Jaegle for pointing out the suitability of the GlueX experiment.

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  1. Department of Physics and Nanotechnology, College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Tamil Nadu, India

    Triparno Bandyopadhyay

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Bandyopadhyay, T. Dark photons from displaced vertices. Eur. Phys. J. Spec. Top. (2024). https://doi.org/10.1140/epjs/s11734-024-01087-5

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