Coupling QCD-Scale Axionlike Particles to Gluons

Physical Review Letters
Daniel AloniMike Williams

Abstract

We present a novel data-driven method for determining the hadronic interaction strengths of axionlike particles (ALPs) with QCD-scale masses. Using our method, it is possible to calculate the hadronic production and decay rates of ALPs, along with many of the largest ALP decay rates to exclusive final states. To illustrate the impact on QCD-scale ALP phenomenology, we consider the scenario where the ALP-gluon coupling is dominant over the ALP coupling to photons, electroweak bosons, and all fermions for m_{π}≲m_{a}≲3  GeV. We emphasize, however, that our method can easily be generalized to any set of ALP couplings to standard model particles. Finally, using the approach developed here, we provide calculations for the branching fractions of η_{c}→VV decays; i.e., η_{c} decays into two vector mesons, which are consistent with the known experimental values.

References

Oct 15, 2008·Physical Review Letters·B AubertUNKNOWN BABAR Collaboration
Sep 26, 2012·Physical Review Letters·Z Q LiuUNKNOWN Belle Collaboration
Dec 10, 2015·Physical Review Letters·Peter W GrahamSurjeet Rajendran
Apr 4, 2017·Physical Review Letters·Eder IzaguirreBrian Shuve
May 13, 2017·Physical Review Letters·Simon KnapenTom Melia

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Citations

Jun 23, 2020·Physical Review Letters·Anson HookRaman Sundrum
Feb 23, 2020·Physical Review Letters·M B GavelaJ F de Trocóniz
Mar 7, 2020·Physical Review Letters·Teppei KitaharaKohsaku Tobioka
Sep 7, 2019·Physical Review Letters·Daniel AloniMike Williams

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