NDLI: Time reversal and the neutron : Results of the emiT II experiment

Content Provider	Springer Nature Link
Author	Chupp, T. E. Cooper, R. L. Coulter, K. P. Freedman, S. J. Fujikawa, B. K. Jones, G. L. Garcia, A. Mumm, H. P. Nico, J. S. Thompson, A. K. Trull, C. Wietfeldt, F. E. Wilkerson, J. F.
Copyright Year	2013
Abstract	We have measured the triple correlation $D\langle\vec J_n\rangle/J_n\cdot (\vec\beta_e\times\hat p_\nu)$ with a polarized cold-neutron beam (Mumm et al., Phys Rev Lett 107:102301, 2011; Chupp et al., Phys Rev C 86:035505, 2012). A non-zero value of D can arise due to parity-even-time-reversal-odd interactions that imply CP violation. Final-state effects also contribute to D at the level of 10 − 5 and can be calculated with precision of 1 % or better. The D coefficient is uniquely sensitive to the imaginary part of the ratio of axial-vector and vector beta-decay amplitudes as well as to scalar and tensor interactions that could arise due to beyond-Standard-Model physics. Over 300 million proton-electron coincidence events were used in a blind analysis with the result D = [ − 0.94±1.89 (stat)±0.97(sys)]×10 − 4. Assuming only vector and axial vector interactions in beta decay, our result can be interpreted as a measure of the phase of the axial-vector coupling relative to the vector coupling, $\phi_{\rm AV}= 180.012^\circ \pm 0.028^\circ$ . This result also improves constrains on certain non-VA interactions.
Starting Page	97
Ending Page	104
Page Count	8
File Format	PDF
ISSN	03043843
Journal	Hyperfine Interactions
Volume Number	214
Issue Number	1-3
e-ISSN	15729540
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-02-19
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Time-reversal invariance Neutron decay Beta decay Nuclear Physics, Heavy Ions, Hadrons Atomic, Molecular, Optical and Plasma Physics Condensed Matter Physics Surfaces and Interfaces, Thin Films
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Physical and Theoretical Chemistry Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Tests of P-violation in neutron and nuclear beta decay

Discover potential in a search for time-reversal invariance violation in nuclei

Test of time-reversal invariance at COSY (TRIC)

Precision measurements in nuclear beta decay

The feasibility of the TRIC experiment at COSY

Neutron bound beta-decay: BOB

Test of rotational invariance in β decay

Lorentz invariance on trial in the weak decay of polarized atoms

DESCANT – the deuterated scintillator array for neutron tagging

Time reversal and the neutron : Results of the emiT II experiment

Similar Documents

Tests of P-violation in neutron and nuclear beta decay

Discover potential in a search for time-reversal invariance violation in nuclei

Test of time-reversal invariance at COSY (TRIC)

Precision measurements in nuclear beta decay

The feasibility of the TRIC experiment at COSY

Neutron bound beta-decay: BOB

Test of rotational invariance in β decay

Lorentz invariance on trial in the weak decay of polarized atoms

DESCANT – the deuterated scintillator array for neutron tagging

Time reversal and the neutron : Results of the emiT II experiment