page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 1 ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes” Experimental Opportunity at J-PARC H.M.Shimizu Department of Physics, Nagoya University hirohiko.shimizu@nagoya-u.jp
page Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 2 Title(Experimental Opportunity at J-PARC) Nagoya Univ. H.M.Shimizu, M.Kitaguchi, K.Hirota, G.Ichikawa T.Sugino, R.Sakakibara, S.Itoh, S.Hisamura S.Awano, F.Goto, K.Nagamoto, M.Yokohashi, N.Oi, A.Okada JAEA K.Sakai, H.Hideo, A.Kimura RIKEN Y.Yamagata T.Ino KEK RRI, Kyoto Univ. M.Hino RCNP, Osaka Univ. Univ. British Columbia T.Shima Y.Yamagata Kyushu Univ. T.Yoshioka Tokyo Institute of Technology Yamagata Univ. T. Iwata K.Asahi Univ. South Carolina V.Gudkov Indiana Univ. W.M.Snow
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 3 Planck scale Origin of CP-violation Energy Frontier Quarks Leptons P,T-odd Couplings Nucleons Nuclei Nucleon EDM Atoms Molecules
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 4 Enhanced Sensitivity to P-violation in Nuclear Process
page Title(Experimental Opportunity at J-PARC) 5 Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) eV neutron capture σ n,tot U I l = 0, 1, (2,...) V.McLane et al. Neutron Cross Sections vol.2 s = 1/2 Potential Scattering Compound Resonance j = l + s J = I + j target spin spin of the neutron resonance total angular I = 0 momentum l = 0 s-wave resonance s J = 1/2 interference 1/kR ~ 10 − 3 (common J) l = 1 { p 1/2 J = 1/2 p-wave resonance p 3/2 J = 3/2 j = 1/2 or 3/2
page 6 Title(Experimental Opportunity at J-PARC) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Enhancement of P-violation in a Compound State s-wave resonance A P-violation is enhanced in p-wave resonance n (A+1)* E n E p E s v = s p W Σ a i ( ) ( Γ ns ) 1/2 v ( Γ np ) 1/2 4 π i i Δσ Δσ P = k 2 Im (E − E s + i Γ s / 2) (E − E p + i Γ p / 2) N N' Σ Σ s = p = a i ψ i b j ψ j interference between neighboring i=1 j=1 N a i* Σ s p = b j ψ i ψ j W W s- and p-wave resonances 10 6eV Δ E i, j N ~ ~ 10 5 D 1 1 ~ W 10 eV √ N √ N √ N PV in NN interaction s p W W ~ √ N Δ E E p − E s 10 − 7 10 10 2 − 10 10 3 10
page Title(Experimental Opportunity at J-PARC) 7 Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) Parity Mixing (Entrance Channel) f = f PC + f PNC |f| 2 = |f PC | 2 + 2Re f PC f PNC * + |f PNC | 2 ⇒ ~ 2 |f PNC | α = 2Re f PC f PNC * |f PC | |f PC | 2 A A' 1 1 W γ Γ sn W Γ p s p Γ p Γ s E n − E p + i 2 E n − E s + i 2 γ n Γ sn 2 W ~ ~ 2 2 Γ s Γ pn A A' 1 E n − E s + i 2 γ Γ pn Γ p Γ p E n − E p + i 2 p γ n 2W Γ sn | E p - E s | Γ pn E n = E p Dynamic Structural Kinematical ~10 3 10 2 ~ 10 3 Enhancement Enhancement Enhancement
page 8 Title(Experimental Opportunity at J-PARC) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Experimental Appratus Experimental Apparatus Target Dynamically Spallation Superconducting Neutron Polarized Magnetic Shield Proton Filter Source as Neutron 20Hz p 500MeV ~5 µ A Polarizer Neutron biological shield Rotatable superconducting magnet 2.5T γ -ray beam monitor spallation Detector Detectors 238 U collimator γ H 2 O collimator 10B loaded liquid moderation BaF2 scintillator Adiabatic Passage Adiabatic Passage Adiabatic Passages Transmittance Monitor Ti-sapphire Ar laser polarized target polarizer analyzer spin control Ti-sapphire Ar laser Polarized Neutron Source Target station Neutron Spin Analyzer
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 9 Gudkov, Phys. Rep. 212 (1992) 77 T-violation P-violation g CP /g P Principle used in this estimation ∆ σ CP = κ ( J ) w v ∆ σ P present d n upper limit corresponds to 10 -3
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 10 T-violation in Neutron Optics f = A 0 + B 0 σ · ˆ I + C 0 σ · ˆ k + D 0 σ · ( ˆ I × ˆ I k ) U f U i k z
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 11 T-violation in Neutron Optics f = A 0 + B 0 σ · ˆ I + C 0 σ · ˆ k + D 0 σ · ( ˆ I × ˆ I k ) U f U i k z
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 12 A (Analyzing Power) & P (Polarization) Polarization Transfer y y Prob( ) z z x x y y ) Prob( z z x x − 8 Im C*D 4 Im C*D y y Prob( ) z z x x y y ) Prob( z z x x 8 Re A*D 4 Im A*D y y Prob( ) z z x x y y ) Prob( z z x x 8 Im B*D 4 Im B*D
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 13 A (Analyzing Power) & P (Polarization) Polarization Transfer y y Prob( ) z z x x y y ) Prob( z z x x − 8 Im C*D 4 Im C*D y y Prob( ) z z x x y y ) Prob( z z x x 8 Re A*D 4 Im A*D y y Prob( ) z z x x y y ) Prob( z z x x 8 Im B*D 4 Im B*D
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 14 Choice of Target Nucleus
page 107 Ag 133 Cs 115 In 109 Ag 117 Sn 113 Cd 115 In 127 I 232 Th 113 Cd 121 Sb 232 Th 238 U 232 Th 131 Xe Title(Experimental Opportunity at J-PARC) 238 U 232 Th 108 Pd 113 Cd 232 Th 108 Pd 232 Th 81 Br 139 La |A L | [%] E n [eV] 15 Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Mitchell, Phys. Rep. 354 (2001) 157
page 107 Ag 133 Cs 115 In 109 Ag 117 Sn 113 Cd 115 In 127 I 232 Th 113 Cd 121 Sb 232 Th 238 U 232 Th 131 Xe Title(Experimental Opportunity at J-PARC) 238 U 232 Th 108 Pd 113 Cd 232 Th 108 Pd 232 Th 81 Br 139 La |A L | [%] E n [eV] 16 Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Mitchell, Phys. Rep. 354 (2001) 157
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 17 ◎ ◎ ◎ 139 La 81 Br 117 Sn 131 Xe Δσ P ⚪ E p [eV] epithermal ~eV
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 18 Polarized Epithermal Neutron Beam
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 19 Spallation Source at J-PARC
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 20 Spallation Source at J-PARC
page Title(Experimental Opportunity at J-PARC) Conf(ACFI Meeting “Time-reversal Tests in Nuclear and Hadronic Processes”) Date(2014/11/07) At(Amherst Center for Fundamental Interactions, Univ. of Massachusetts Amherst) 21 Spallation Source at J-PARC
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