skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Search for T violation in charm meson decays

Abstract

Using data from the FOCUS (E831) experiment, they have searched for T violation in charm meson decays using the four-body decay channels D{sup 0} {yields} K{sup -}K{sup +} {pi}{sup -}{pi}{sup +}, D{sup +} {yields} K{sub S}{sup 0}K{sup +}{pi}{sup -}{pi}{sup +}, and D{sub s}{sup +} {yields} K{sub S}{sup 0}K{sup +}{pi}{sup -}{pi}{sup +}. The T violation asymmetry is obtained using triple-product correlations and assuming the validity of the CPT theorem. They find the asymmetry values to be A{sub T{sub viol}}(D{sup 0}) = 0.010 {+-} 0.057(stat.) {+-} 0.037(syst.), A{sub T{sub viol}}(D{sup +}) = 0.023 {+-} 0.062(stat.) {+-} 0.022(syst.), and A{sub T{sub viol}}(D{sub s}{sup +}) = -0.036 {+-} 0.067(stat.) {+-} 0.023(syst.). Each measurement is consistent with no T violation. New measurements of the CP asymmetries for some of these decay modes are also presented.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; « less
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
15017151
Report Number(s):
FERMILAB-PUB-05-222-E
arXiv eprint number hep-ex/0506012; TRN: US0605102
DOE Contract Number:  
AC02-76CH03000
Resource Type:
Journal Article
Journal Name:
Phys.Lett.B622:239-248,2005
Additional Journal Information:
Journal Name: Phys.Lett.B622:239-248,2005
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; CPT THEOREM; DECAY; MESONS; Experiment-HEP

Citation Formats

Link, J M, Yager, P M, /UC, Davis, Anjos, J C, Bediaga, I, Castromonte, C, Machado, A A, Magnin, J, Massafferri, A, de Miranda, J M, Pepe, I M, Polycarpo, E, dos Reis, A C, /Rio de Janeiro, CBPF, Carrillo, S, Casimiro, E, Cuautle, E, Sanchez-Hernandez, A, Uribe, C, Vazquez, F, /CINVESTAV, IPN, Agostino, L, Cinquini, L, Cumalat, J P, and /Colorado U. /Fermilab /Frascati /Guanajuato U. /Illinois U., Urbana /Indiana U. /Korea U. /Kyungpook Natl. U. /INFN, Milan /Milan U. /North Carolina U. /Pavia U. /INFN,Pavia /Rio de Janeiro, Pont. U. Catol. /Puerto Rico U., Mayaguez /South Carolina U. /Tennessee U. /Vanderbilt U. /Wisconsin U., Madison. Search for T violation in charm meson decays. United States: N. p., 2005. Web. doi:10.1016/j.physletb.2005.07.024.
Link, J M, Yager, P M, /UC, Davis, Anjos, J C, Bediaga, I, Castromonte, C, Machado, A A, Magnin, J, Massafferri, A, de Miranda, J M, Pepe, I M, Polycarpo, E, dos Reis, A C, /Rio de Janeiro, CBPF, Carrillo, S, Casimiro, E, Cuautle, E, Sanchez-Hernandez, A, Uribe, C, Vazquez, F, /CINVESTAV, IPN, Agostino, L, Cinquini, L, Cumalat, J P, & /Colorado U. /Fermilab /Frascati /Guanajuato U. /Illinois U., Urbana /Indiana U. /Korea U. /Kyungpook Natl. U. /INFN, Milan /Milan U. /North Carolina U. /Pavia U. /INFN,Pavia /Rio de Janeiro, Pont. U. Catol. /Puerto Rico U., Mayaguez /South Carolina U. /Tennessee U. /Vanderbilt U. /Wisconsin U., Madison. Search for T violation in charm meson decays. United States. https://doi.org/10.1016/j.physletb.2005.07.024
Link, J M, Yager, P M, /UC, Davis, Anjos, J C, Bediaga, I, Castromonte, C, Machado, A A, Magnin, J, Massafferri, A, de Miranda, J M, Pepe, I M, Polycarpo, E, dos Reis, A C, /Rio de Janeiro, CBPF, Carrillo, S, Casimiro, E, Cuautle, E, Sanchez-Hernandez, A, Uribe, C, Vazquez, F, /CINVESTAV, IPN, Agostino, L, Cinquini, L, Cumalat, J P, and /Colorado U. /Fermilab /Frascati /Guanajuato U. /Illinois U., Urbana /Indiana U. /Korea U. /Kyungpook Natl. U. /INFN, Milan /Milan U. /North Carolina U. /Pavia U. /INFN,Pavia /Rio de Janeiro, Pont. U. Catol. /Puerto Rico U., Mayaguez /South Carolina U. /Tennessee U. /Vanderbilt U. /Wisconsin U., Madison. 2005. "Search for T violation in charm meson decays". United States. https://doi.org/10.1016/j.physletb.2005.07.024. https://www.osti.gov/servlets/purl/15017151.
@article{osti_15017151,
title = {Search for T violation in charm meson decays},
author = {Link, J M and Yager, P M and /UC, Davis and Anjos, J C and Bediaga, I and Castromonte, C and Machado, A A and Magnin, J and Massafferri, A and de Miranda, J M and Pepe, I M and Polycarpo, E and dos Reis, A C and /Rio de Janeiro, CBPF and Carrillo, S and Casimiro, E and Cuautle, E and Sanchez-Hernandez, A and Uribe, C and Vazquez, F and /CINVESTAV, IPN and Agostino, L and Cinquini, L and Cumalat, J P and /Colorado U. /Fermilab /Frascati /Guanajuato U. /Illinois U., Urbana /Indiana U. /Korea U. /Kyungpook Natl. U. /INFN, Milan /Milan U. /North Carolina U. /Pavia U. /INFN,Pavia /Rio de Janeiro, Pont. U. Catol. /Puerto Rico U., Mayaguez /South Carolina U. /Tennessee U. /Vanderbilt U. /Wisconsin U., Madison},
abstractNote = {Using data from the FOCUS (E831) experiment, they have searched for T violation in charm meson decays using the four-body decay channels D{sup 0} {yields} K{sup -}K{sup +} {pi}{sup -}{pi}{sup +}, D{sup +} {yields} K{sub S}{sup 0}K{sup +}{pi}{sup -}{pi}{sup +}, and D{sub s}{sup +} {yields} K{sub S}{sup 0}K{sup +}{pi}{sup -}{pi}{sup +}. The T violation asymmetry is obtained using triple-product correlations and assuming the validity of the CPT theorem. They find the asymmetry values to be A{sub T{sub viol}}(D{sup 0}) = 0.010 {+-} 0.057(stat.) {+-} 0.037(syst.), A{sub T{sub viol}}(D{sup +}) = 0.023 {+-} 0.062(stat.) {+-} 0.022(syst.), and A{sub T{sub viol}}(D{sub s}{sup +}) = -0.036 {+-} 0.067(stat.) {+-} 0.023(syst.). Each measurement is consistent with no T violation. New measurements of the CP asymmetries for some of these decay modes are also presented.},
doi = {10.1016/j.physletb.2005.07.024},
url = {https://www.osti.gov/biblio/15017151}, journal = {Phys.Lett.B622:239-248,2005},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 01 00:00:00 EDT 2005},
month = {Wed Jun 01 00:00:00 EDT 2005}
}