Searches for possible T-odd and P-odd short range interactions using polarized nuclei
1 Triangle Universities Nuclear Laboratory and Department of Physics, Duke University, Durham, North Carolina 27708, USA
2 Department of Physics, Indiana University, Bloomington, Indiana 47408, USA
3 Department of Physics, Shanghai Jiaotong University, Shanghai, 200240, China
a e-mail: email@example.com
Published online: 20 March 2014
Various theories predict the possible existence of T-odd and P-odd shortrange forces between spin ½ fermions, proportional to S・r where S is the fermion spin and r is the separation between particles. We use ensembles of polarized nuclei and an un-polarized mass to search for such a force over sub-mm ranges. We established an improved upper bound on the product gsgpn of the scalar coupling to particles in the un-polarized mass and the pseudo-scalar coupling of polarized neutrons for force ranges from 10−4 to 10−2 m, corresponding to a mass range of 2・10−3 to 2・10−5 eV for the exchange boson .
© Owned by the authors, published by EDP Sciences, 2014
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