TY - JOUR
T1 - Measuring the electric dipole moment of the electron in BaF
AU - Aggarwal, Parul
AU - Bethlem, Hendrick L.
AU - Borschevsky, Anastasia
AU - Denis, Malika
AU - Esajas, Kevin
AU - Haase, Pi A. B.
AU - Hao, Yongliang
AU - Hoekstra, Steven
AU - Jungmann, Klaus
AU - Meijknecht, Thomas B.
AU - Mooij, Maarten C.
AU - Timmermans, Rob G. E.
AU - Ubachs, Wim
AU - Willmann, Lorenz
AU - Zapara, Artem
PY - 2018/11/20
Y1 - 2018/11/20
N2 - We investigate the merits of a measurement of the permanent electric dipole moment of the electron (eEDM) with barium monofluoride molecules, thereby searching for phenomena of CP violation beyond those incorporated in the standard model (SM) of particle physics. Although the BaF molecule has a smaller enhancement factor in terms of the effective electric field than other molecules used in current studies (YbF, ThO and ThF+), we show that a competitive measurement is possible by combining Stark-deceleration, laser-cooling and an intense primary cold source of BaF molecules. With the long coherent interaction times obtainable in a cold beam of BaF, a sensitivity of 5 × 10−30 e⋅cm for an eEDM is feasible. We describe the rationale, the challenges and the experimental methods envisioned to achieve this target.
AB - We investigate the merits of a measurement of the permanent electric dipole moment of the electron (eEDM) with barium monofluoride molecules, thereby searching for phenomena of CP violation beyond those incorporated in the standard model (SM) of particle physics. Although the BaF molecule has a smaller enhancement factor in terms of the effective electric field than other molecules used in current studies (YbF, ThO and ThF+), we show that a competitive measurement is possible by combining Stark-deceleration, laser-cooling and an intense primary cold source of BaF molecules. With the long coherent interaction times obtainable in a cold beam of BaF, a sensitivity of 5 × 10−30 e⋅cm for an eEDM is feasible. We describe the rationale, the challenges and the experimental methods envisioned to achieve this target.
KW - Molecular Physics and Chemical Physics
UR - http://www.scopus.com/inward/record.url?scp=85062286425&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062286425&partnerID=8YFLogxK
U2 - 10.1140/epjd/e2018-90192-9
DO - 10.1140/epjd/e2018-90192-9
M3 - Article
VL - 72
JO - European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics
JF - European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics
SN - 1434-6060
IS - 11
M1 - 197
ER -
