title: High Precision Determination of the β Decay Q(EC) Value of (11)C and Implications on the Tests of the Standard Model.
abstract: We report the determination of the Q(EC) value of the mirror transition of (11)C by measuring the atomic masses of (11)C and (11)B using Penning trap mass spectrometry. More than an order of magnitude improvement in precision is achieved as compared to the 2012 Atomic Mass Evaluation (Ame2012) [Chin. Phys. C 36, 1603 (2012)]. This leads to a factor of 3 improvement in the calculated Ft value. Using the new value, Q(EC)=1981.690(61)  keV, the uncertainty on Ft is no longer dominated by the uncertainty on the Q(EC) value. Based on this measurement, we provide an updated estimate of the Gamow-Teller to Fermi mixing ratio and standard model values of the correlation coefficients.
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.
authors.forename: K
authors.initials: K
authors.lastname: Gulyuz
authors.affiliation: Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.|Facility for Rare Isotope Beams, East Lansing, Michigan 48824, USA.
authors.forename: G
authors.initials: G
authors.lastname: Bollen
authors.affiliation: Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA.
authors.forename: M
authors.initials: M
authors.lastname: Brodeur
authors.affiliation: Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA.
authors.forename: R A
authors.initials: RA
authors.lastname: Bryce
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.|Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: K
authors.initials: K
authors.lastname: Cooper
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.
authors.forename: M
authors.initials: M
authors.lastname: Eibach
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.|Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: C
authors.initials: C
authors.lastname: Izzo
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.
authors.forename: E
authors.initials: E
authors.lastname: Kwan
authors.affiliation: Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA.
authors.forename: K
authors.initials: K
authors.lastname: Manukyan
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.|Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: D J
authors.initials: DJ
authors.lastname: Morrissey
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.|Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: O
authors.initials: O
authors.lastname: Naviliat-Cuncic
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.|Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA.
authors.forename: M
authors.initials: M
authors.lastname: Redshaw
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.
authors.forename: R
authors.initials: R
authors.lastname: Ringle
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.|Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: R
authors.initials: R
authors.lastname: Sandler
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.
authors.forename: S
authors.initials: S
authors.lastname: Schwarz
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.
authors.forename: C S
authors.initials: CS
authors.lastname: Sumithrarachchi
authors.affiliation: National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA.|Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: A A
authors.initials: AA
authors.lastname: Valverde
authors.affiliation: Facility for Rare Isotope Beams, East Lansing, Michigan 48824, USA.
authors.forename: A C C
authors.initials: AC
authors.lastname: Villari