Measurement of the Decay $K_L \to \pi^0 e^+ e^- \gamma$

Abouzaid, E.

doi:10.1103/PhysRevD.76.052001

Measurement of the Decay $$K_L \to \pi^0 e^+ e^- \gamma$$

Journal Article · Fri Jun 01 04:00:00 EDT 2007 · Phys.Rev.D

DOI:https://doi.org/10.1103/PhysRevD.76.052001· OSTI ID:1863004

Abouzaid, E.

We report on a new measurement of the branching ratio B(KL -> pi0 e+ e- gamma) using the KTeV detector. This analysis uses the full KTeV data set collected from 1997 to 2000. We reconstruct 139 events over a background of 14, which results in B(KL -> pi0 e+ e- gamma) = (1.62 +/- 0.14 (stat) +/- 0.09 (syst)) x 10^{-8}. This result supersedes the earlier KTeV measurement of this branching ratio.

Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Contributing Organization:: KTeV

DOE Contract Number:: AC02-07CH11359

OSTI ID:: 1863004

Report Number(s):: FERMILAB-PUB-07-822-E; arXiv:0706.4074; oai:inspirehep.net:754140

Journal Information:: Phys.Rev.D, Journal Name: Phys.Rev.D Vol. 76

Country of Publication:: United States

Language:: English

References (13)

Measurement of the Decay K L → π 0 γ γ Alavi-Harati, A.; Albuquerque, I. F.; Alexopoulos, T. Physical Review Letters, Vol. 83, Issue 5 https://doi.org/10.1103/PhysRevLett.83.917	journal	August 1999
A measurement of the decay KL→π0γγ Barr, G. D.; Buchholz, P.; Carosi, R. Physics Letters B, Vol. 284, Issue 3-4 https://doi.org/10.1016/0370-2693(92)90458-G	journal	June 1992
Measurement of the branching ratio of the decay K L → π 0 γ γ Papadimitriou, V.; Barker, A.; Briere, R. A. Physical Review D, Vol. 44, Issue 3 https://doi.org/10.1103/PhysRevD.44.R573	journal	August 1991
Precise measurement of the decay KL→π0γγ Lai, A.; Marras, D.; Bevan, A. Physics Letters B, Vol. 536, Issue 3-4 https://doi.org/10.1016/S0370-2693(02)01863-4	journal	June 2002
Measurements of K L branching fractions and the C P violation parameter \| η + − \| Alexopoulos, T.; Arenton, M.; Barbosa, R. F. Physical Review D, Vol. 70, Issue 9 https://doi.org/10.1103/PhysRevD.70.092006	journal	November 2004
Experimental search for the decay mode KL→π0γe+e− Murakami, K.; Hemmi, Y.; Kurashige, H. Physics Letters B, Vol. 463, Issue 2-4 https://doi.org/10.1016/S0370-2693(99)00939-9	journal	September 1999
K L → π 0 γ e + e − and its relation to CP and chiral tests Donoghue, John F.; Gabbiani, Fabrizio Physical Review D, Vol. 56, Issue 3 https://doi.org/10.1103/PhysRevD.56.1605	journal	August 1997
Observation of the decay KL→π0γγ Barr, G. D.; Carosi, R.; Coward, D. Physics Letters B, Vol. 242, Issue 3-4 https://doi.org/10.1016/0370-2693(90)91806-M	journal	June 1990
Review of Particle Physics al, W-M Yao et Journal of Physics G: Nuclear and Particle Physics, Vol. 33, Issue 1 https://doi.org/10.1088/0954-3899/33/1/001	journal	July 2006
First Observation of the Decay K L → π 0 e + e − γ Alavi-Harati, A.; Alexopoulos, T.; Arenton, M. Physical Review Letters, Vol. 87, Issue 2 https://doi.org/10.1103/PhysRevLett.87.021801	journal	June 2001
Vector meson exchange contributions to K â ÏÎ³Î³ and KL â Î³â+ââ D'Ambrosio, G. Nuclear Physics B, Vol. 492, Issue 1-2 https://doi.org/10.1016/S0550-3213(97)00116-8	journal	May 1997
The KTeV hardware cluster counter Bown, C.; Cheu, E.; Dusatko, J. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 369, Issue 1 https://doi.org/10.1016/0168-9002(95)00799-7	journal	January 1996
Measurements of direct CP violation, CPT symmetry, and other parameters in the neutral kaon system Alavi-Harati, A.; Alexopoulos, T.; Arenton, M. Physical Review D, Vol. 67, Issue 1 https://doi.org/10.1103/PhysRevD.67.012005	journal	January 2003

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