Connection between beam polarization and systematical errors in storage ring electric-dipole-moment experiments
نویسندگان
چکیده
منابع مشابه
Neutron Electric Dipole Moment Experiments
The possibility of a non-zero value for neutron EDM continues to be of central importance in physics and cosmology. A non-zero neutron EDM would be a direct evidence for time-reversal symmetry violation. It also implies CP-violation under the assumption of CPT invariance. To date, only two examples of CP-violation have been found: decays of neutral K mesons and B mesons. CP-violation is believe...
متن کاملCompact storage ring to search for the muon electric dipole moment
We present the concept of a compact storage ring of less than 0.5 m orbit radius to search for the electric dipole moment of the muon (dμ) by adapting the “frozen spin” method. At existing muon facilities a statistics limited sensitivity of dμ ∼ 5 × 10 e cm can be achieved within one year of data taking. Reaching this precision would demonstrate the viability of this novel technique to directly...
متن کاملThe Muon Electric Dipole Moment
The electric dipole moment of the muon (dμ) is evaluated in a two Higgs doublet model with a softly broken discrete symmetry. For tan β ≡ |v2|/|v1| ∼ 1, contributions from two loop diagrams involving the t quark and the W boson dominate; while for tan β ∼ > 10, contributions from two loop diagrams involving the b quark and the τ lepton are dominant. For 8 ∼ > tan β ∼ > 4, significant cancellati...
متن کاملNeutron Electric Dipole Moment Experiment
A.1.a General Introduction Precision measurements of the properties of the neutron present an opportunity to search for violations of fundamental symmetries and to make critical tests of the validity of the Standard Model (SM) of electroweak (EW) interactions. These experiments have been pursued with great energy and interest since Chadwick [i] discovered the neutron in 1932. Searches for the e...
متن کاملBeam Polarization Measurements at the Spear Storage Ring
Radiative beam polarization has been measured in the SPEAR storage ring to determine experimentally the strengths of depolarization phenomena. With single beams, the expected linear depolarization resonances and additional nonlinear and satellite resonances were observed. Data are also presented on polarization with colliding beams.
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ژورنال
عنوان ژورنال: JETP Letters
سال: 2013
ISSN: 0021-3640,1090-6487
DOI: 10.1134/s002136401317013x