Abstract
The PrimEx detector has been built for high precision measurement of the neutral pion lifetime via the Primakoff effect. PrimEx physics data have been collected during October 2004 run at Jefferson Lab. Detailed study of systematics performed during this year allowed to estimate systematic error more precise. The extracted preliminary result for the π0 radiative decay has 2.1% statistical and 1.6% systematic error.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
B.L. Ioffe, A.G. Oganesian, Phys. Lett. B647 389 (2007) [arXiv:hep-ph/0701077]
J.L. Goity, A.M. Bernstein, J.F. Donoghue, B.R. Holstein, Phys. Rev. D66 076014 (2002)
H.W. Atherton et al., “Direct Measurement of The Lifetime of The Neutral Pion”, Phys. Lett. B158 81 (1985)
H. Primakoff, Phys. Rev. 81 899 (1951)
G. Bellettini, C. Bemporad, P.L. Braccini, L. Foá, Nuovo Cimento 40, 1139 (1965)
M. Braunschweig, W. Braunschweig, D. Husmann, K. Lübelsmeyer, D. Schmitz, Phys. Lett. B26 405 (1968)
V.I. Kryshkin, A.G. Sterligov, Yu.P. Usov, “Measurement of π0 lifetime”, ZhETF 57 1917 (1969)
G. Bellettini et al., “A new measurement of the pi0 lifetime through the primakoff effect in nuclei” Nuovo Cimento A66, 243 (1970)
A. Browman, J. DeWire, B. Gittelman, K.M. Hanson, D. Larson, E. Loh, R. Lewis, “The Decay Width of the Neutral π-Meson”, Phys. Rev. Lett. 33 1400 (1974)
W.-M. Yao et al. (Particle Data Group), J. Phys. G33 540 (2006)
PrimEx Collaboration, “Primex Conceptual Design Report”, PrimEx Note, (2000) http://www.jlab.org/primex/primex notes/PrimEx CDR.ps
M. Kubantsev, I. Larin, A. Gasparian, “Performance of the PRIMEX Electromagnetic Calorimeter”, Proc. of conf. “Calor 2006”, Chicago, 2006
P. Martel et al., “Nuclear Targets for a Precision Measurement of the Neutral Pion Radiative Width” arXiv:0811.2132 [nucl-ex]
S. Gevorkyan et al., “Incoherent Photoproduction of π0 Mesons off Nuclei”, PrimEx Note, (2007) http://www.jlab.org/primex/primex notes/inc.pdf
T. Rodrigues, “Incoherent π0 photoproduction in the PrimEx kinematics via the MCMC intranuclear cascade model”, PrimEx Note, (2007) http://www.jlab.org/primex/primex notes/ PrimEx Note 52.pdf
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2009 Springer Science + Business Media B.V.
About this paper
Cite this paper
Larin, I. (2009). A Precision Measurement of the Neutral Pion Life Time: Updated Results from the PrimEx Experiment. In: Begun, V., Jenkovszky, L.L., Polański, A. (eds) Progress in HighEnergy Physics and Nuclear Safety. NATO Science for Peace and Security Series B: Physics and Biophysics. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-2287-5_16
Download citation
DOI: https://doi.org/10.1007/978-90-481-2287-5_16
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-2285-1
Online ISBN: 978-90-481-2287-5
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)