Testing Dark Decays of Baryons in Neutron Stars

Physical Review Letters
Gordon BaymJessie Shelton

Abstract

The observation of neutron stars with masses greater than one solar mass places severe demands on any exotic neutron decay mode that could explain the discrepancy between beam and bottle measurements of the neutron lifetime. If the neutron can decay to a stable, feebly interacting dark fermion, the maximum possible mass of a neutron star is 0.7M_{⊙}, while all well-measured neutron star masses exceed one M_{⊙}. The existence of 2M_{⊙} neutron stars further indicates that any explanation beyond the standard model for the neutron lifetime puzzle requires dark matter to be part of a multiparticle dark sector with highly constrained interactions. Beyond the neutron lifetime puzzle, our results indicate that neutron stars provide unique and useful probes of GeV-scale dark sectors coupled to the standard model via baryon-number-violating interactions.

References

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Oct 29, 2010·Nature·P B DemorestJ W T Hessels
Apr 27, 2013·Science·John AntoniadisDavid G Whelan
Dec 18, 2013·Physical Review Letters·A T YueF E Wietfeldt
Apr 16, 2016·Scientific American·Geoffrey L Greene, Peter Geltenbort
Jan 18, 2018·Physical Review Letters·Masha BaryakhtarNirmal Raj
Feb 10, 2018·Reports on Progress in Physics·Gordon BaymTatsuyuki Takatsuka
May 26, 2018·Physical Review Letters·Bartosz Fornal, Benjamín Grinstein
Jun 5, 2018·Physical Review Letters·Andrzej CzarneckiAlberto Sirlin
Aug 8, 2018·Physical Review Letters·Z TangB A Zeck
Aug 25, 2018·Physical Review Letters·David McKeenDake Zhou

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Citations

Aug 25, 2018·Physical Review Letters·David McKeenDake Zhou
Sep 17, 2019·Physical Review Letters·Benjamín GrinsteinNiklas Grønlund Nielsen
Dec 19, 2020·Physical Review Letters·David McKeenNirmal Raj
Aug 24, 2021·Physical Review Letters·David McKeenNirmal Raj

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