<i>Ab initio</i> calculation of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>β</mml:mi></mml:math>-decay spectrum of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts/><mml:none/><mml:mn>6</mml:mn></mml:mmultiscripts></mml:math>
G. B. King, Alessandro Baroni, Vincenzo Cirigliano, Stefano Gandolfi, L. Hayen, Emanuele Mereghetti, Saori Pastore, M. Piarulli
Abstract
Searches for new physics can be conducted by brute force or, like the perihelion shift of Mercury, looking for subtle but persistent discrepancies. This detailed paper carries out high-precision calculations of the $\ensuremath{\beta}$-decay spectrum of ${}^{6}$He, and estimates the experimental precision needed to reveal hints of charged-current interactions beyond the Standard Model and/or sterile neutrinos.
Topics & Concepts
PhysicsMultipole expansionNeutrinoHadronPionNucleonObservableParticle physicsMathematical physicsQuantum mechanicsParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsNeutrino Physics Research