Search for the $K_L \to \pi^0 \pi^0 e^+ e^-$ Decay in the KTeV Experiment

Alavi-Harati, A.

doi:10.1103/PhysRevLett.89.211801

Search for the $$K_L \to \pi^0 \pi^0 e^+ e^-$$ Decay in the KTeV Experiment

Journal Article · Tue Oct 01 04:00:00 EDT 2002 · Phys.Rev.Lett.

DOI:https://doi.org/10.1103/PhysRevLett.89.211801· OSTI ID:1892221

Alavi-Harati, A.

The recent discovery of a large CP violating asymmetry in K(L) --> PI+ PI- E+ E- mode has prompted us to seach for the associated K(L) --> PI0 PI0 E+ E- decay mode in the KTeV-E799 experiment at Fermilab. In 2.7E+11 K(L) decays, one candidate event has been observed with an expected background of 0.3 event, resulting in an upper limit for the K(L) --> PI0 PI0 E+ E- branching ratio of 6.6E-09 at the 90% confidence level.

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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:: 1892221

Report Number(s):: FERMILAB-PUB-02-271-E; arXiv:hep-ex/0210056; oai:inspirehep.net:600537

Journal Information:: Phys.Rev.Lett., Journal Name: Phys.Rev.Lett. Vol. 89

Country of Publication:: United States

Language:: English

References (16)

The decays in the effective chiral lagrangian approach Funck, R.; Kambor, J. Nuclear Physics B, Vol. 396, Issue 1 https://doi.org/10.1016/0550-3213(93)90258-Q	journal	May 1993
Measurement of the Branching Fraction of the Decay K L → π + π − e + e − Adams, J.; Alavi-Harati, A.; Albuquerque, I. F. Physical Review Letters, Vol. 80, Issue 19 https://doi.org/10.1103/PhysRevLett.80.4123	journal	May 1998
Search for the decayKL0→π0π0γ Roberts, D.; Arisaka, K.; Kubic, J. Physical Review D, Vol. 50, Issue 3 https://doi.org/10.1103/PhysRevD.50.1874	journal	August 1994
Direct and indirect CP violation in the decay K L → π + π − e + e − Heiliger, P.; Sehgal, L. M. Physical Review D, Vol. 48, Issue 9 https://doi.org/10.1103/PhysRevD.48.4146	journal	November 1993
Observation of the decay mode KL→π+π−e+e− Takeuchi, Y.; Hemmi, Y.; Kurashige, H. Physics Letters B, Vol. 443, Issue 1-4 https://doi.org/10.1016/S0370-2693(98)01359-8	journal	December 1998
Search for the decay KL → π0π0γ Barr, G. D.; Buchholz, P.; Cundy, D. Physics Letters B, Vol. 328, Issue 3-4 https://doi.org/10.1016/0370-2693(94)91514-8	journal	June 1994
NA48: results on rare decays and future prospects Mazzucato, E. Nuclear Physics B - Proceedings Supplements, Vol. 99, Issue 3 https://doi.org/10.1016/S0920-5632(01)01365-2	journal	May 2001
CP violation in the decay K L → π + π − e + e − Sehgal, L. M.; Wanninger, M. Physical Review D, Vol. 46, Issue 3 https://doi.org/10.1103/PhysRevD.46.1035	journal	August 1992
Current Algebra, Field-Current Identity, theK20K10Electromagnetic Transition, and the DecaysK0→ππe+e− Majumdar, D. P.; Smith, J. Physical Review, Vol. 187, Issue 5 https://doi.org/10.1103/PhysRev.187.2039	journal	November 1969
K L → π + π − e + e − Elwood, John K.; Wise, Mark B.; Savage, Martin J. Physical Review D, Vol. 52, Issue 9 https://doi.org/10.1103/PhysRevD.52.5095	journal	November 1995
Erratum: Direct and indirectCPviolation in the decayKL→π+π−e+e−[Phys. Rev. D 48, 4146 (1993)] Heiliger, P.; Sehgal, L. M. Physical Review D, Vol. 60, Issue 7 https://doi.org/10.1103/PhysRevD.60.079902	journal	September 1999
Measurement of the Branching Ratio of π 0 → e + e − Using K L → 3 π 0 Decays in Flight Alavi-Harati, A.; Albuquerque, I. F.; Alexopoulos, T. Physical Review Letters, Vol. 83, Issue 5 https://doi.org/10.1103/PhysRevLett.83.922	journal	August 1999
Weak Interactions (Second section) Chapter 9: Decays of Neutral K Mesons Lee, T. D.; Wu, C. S. Annual Review of Nuclear Science, Vol. 16, Issue 1 https://doi.org/10.1146/annurev.ns.16.120166.002455	journal	December 1966
Decays KL,S → π0π0γ and KL,S → π0π0e+e− as probes of chiral dynamics Heiliger, P.; Sehgal, L. M. Physics Letters B, Vol. 307, Issue 1-2 https://doi.org/10.1016/0370-2693(93)90209-Z	journal	June 1993
Observation of CP Violation in K L → π + π − e + e − Decays Alavi-Harati, A.; Albuquerque, I. F.; Alexopoulos, T. Physical Review Letters, Vol. 84, Issue 3 https://doi.org/10.1103/PhysRevLett.84.408	journal	January 2000
Erratum: CP violation in the decay K L → π + π − e + e − Sehgal, L. M.; Wanninger, M. Physical Review D, Vol. 46, Issue 11 https://doi.org/10.1103/PhysRevD.46.5209.3	journal	December 1992

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