Measurement of the branching ratio of KL→e+e-γγ

A. Alavi-Harati; T. Alexopoulos; M. Arenton; K. Arisaka; S. Averitte; A. R. Barker; L. Bellantoni; A. Bellavance; J. Belz; R. Ben-David; D. R. Bergman; E. Blucher; G. J. Bock; C. Bown; S. Bright; E. Cheu; S. Childress; R. Coleman; M. D. Corcoran; G. Corti; B. Cox; M. B. Crisler; A. R. Erwin; R. Ford; P. M. Fordyce; A. Glazov; A. Golossanov; G. Graham; J. Graham; K. Hagan; E. Halkiadakis; K. Hanagaki; S. Hidaka; Y. B. Hsiung; V. Jejer; D. A. Jensen; R. Kessler; H. G.E. Kobrak; J. LaDue; A. Lath; A. Ledovskoy; P. L. McBride; P. Mikelsons; E. Monnier; T. Nakaya; K. S. Nelson; H. Nguyen; V. O'Dell; M. Pang; R. Pordes; V. Prasad; C. Qiao; B. Quinn; E. J. Ramberg; R. E. Ray; A. Roodman; M. Sadamoto; S. Schnetzer; K. Senyo; P. Shanahan; P. S. Shawhan; W. Slater; N. Solomey; S. V. Somalwar; R. L. Stone; I. Suzuki; E. C. Swallow; S. A. Taegar; R. J. Tesarek; G. B. Thomson; P. A. Toale; A. Tripathi; R. Tschirhart; Y. W. Wah; J. Wang; H. B. White; J. Whitmore; B. Winstein; R. Winston; T. Yamanaka; E. D. Zimmerman

doi:10.1103/PhysRevD.64.012003

Measurement of the branching ratio of K_L→e⁺e^-γγ

A. Alavi-Harati, T. Alexopoulos, M. Arenton, K. Arisaka, S. Averitte, A. R. Barker, L. Bellantoni, A. Bellavance, J. Belz, R. Ben-David, D. R. Bergman, E. Blucher, G. J. Bock, C. Bown, S. Bright, E. Cheu, S. Childress, R. Coleman, M. D. Corcoran, G. CortiB. Cox, M. B. Crisler, A. R. Erwin, R. Ford, P. M. Fordyce, A. Glazov, A. Golossanov, G. Graham, J. Graham, K. Hagan, E. Halkiadakis, K. Hanagaki, S. Hidaka, Y. B. Hsiung, V. Jejer, D. A. Jensen, R. Kessler, H. G.E. Kobrak, J. LaDue, A. Lath, A. Ledovskoy, P. L. McBride, P. Mikelsons, E. Monnier, T. Nakaya, K. S. Nelson, H. Nguyen, V. O'Dell, M. Pang, R. Pordes, V. Prasad, C. Qiao, B. Quinn, E. J. Ramberg, R. E. Ray, A. Roodman, M. Sadamoto, S. Schnetzer, K. Senyo, P. Shanahan, P. S. Shawhan, W. Slater, N. Solomey, S. V. Somalwar, R. L. Stone, I. Suzuki, E. C. Swallow, S. A. Taegar, R. J. Tesarek, G. B. Thomson, P. A. Toale, A. Tripathi, R. Tschirhart, Y. W. Wah, J. Wang, H. B. White, J. Whitmore, B. Winstein, R. Winston, T. Yamanaka, E. D. Zimmerman

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Abstract

We report on a study of the decay K_L→e⁺e^-γγcarried out as a part of the KTeV/E799 experiment at Fermilab. The 1997 data yielded a sample of 1543 events, including an expected background of 56±8 events. An effective form factor was determined from the observed distribution of the e⁺e^- invariant mass. Using this form factor in the calculation of the detector acceptance, the branching ratio was measured to be B(K_L→e⁺e^-γγ,E _γ*>5 MeV) = (5.84±0.15 (stat) ±0.32 (syst)) ×10^-7.

Original language	English (US)
Article number	012003
Pages (from-to)	120031-120034
Number of pages	4
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	64
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.64.012003
State	Published - 2001
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevD.64.012003

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Alavi-Harati, A., Alexopoulos, T., Arenton, M., Arisaka, K., Averitte, S., Barker, A. R., Bellantoni, L., Bellavance, A., Belz, J., Ben-David, R., Bergman, D. R., Blucher, E., Bock, G. J., Bown, C., Bright, S., Cheu, E., Childress, S., Coleman, R., Corcoran, M. D., ... Zimmerman, E. D. (2001). Measurement of the branching ratio of K_L→e⁺e^-γγ. Physical Review D - Particles, Fields, Gravitation and Cosmology, 64(1), 120031-120034. Article 012003. https://doi.org/10.1103/PhysRevD.64.012003

Alavi-Harati, A, Alexopoulos, T, Arenton, M, Arisaka, K, Averitte, S, Barker, AR, Bellantoni, L, Bellavance, A, Belz, J, Ben-David, R, Bergman, DR, Blucher, E, Bock, GJ, Bown, C, Bright, S, Cheu, E, Childress, S, Coleman, R, Corcoran, MD, Corti, G, Cox, B, Crisler, MB, Erwin, AR, Ford, R, Fordyce, PM, Glazov, A, Golossanov, A, Graham, G, Graham, J, Hagan, K, Halkiadakis, E, Hanagaki, K, Hidaka, S, Hsiung, YB, Jejer, V, Jensen, DA, Kessler, R, Kobrak, HGE, LaDue, J, Lath, A, Ledovskoy, A, McBride, PL, Mikelsons, P, Monnier, E, Nakaya, T, Nelson, KS, Nguyen, H, O'Dell, V, Pang, M, Pordes, R, Prasad, V, Qiao, C, Quinn, B, Ramberg, EJ, Ray, RE, Roodman, A, Sadamoto, M, Schnetzer, S, Senyo, K, Shanahan, P, Shawhan, PS, Slater, W, Solomey, N, Somalwar, SV, Stone, RL, Suzuki, I, Swallow, EC, Taegar, SA, Tesarek, RJ, Thomson, GB, Toale, PA, Tripathi, A, Tschirhart, R, Wah, YW, Wang, J, White, HB, Whitmore, J, Winstein, B, Winston, R, Yamanaka, T & Zimmerman, ED 2001, 'Measurement of the branching ratio of K_L→e⁺e^-γγ', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 64, no. 1, 012003, pp. 120031-120034. https://doi.org/10.1103/PhysRevD.64.012003

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title = "Measurement of the branching ratio of KL→e+e-γγ",

abstract = "We report on a study of the decay KL→e+e-γγcarried out as a part of the KTeV/E799 experiment at Fermilab. The 1997 data yielded a sample of 1543 events, including an expected background of 56±8 events. An effective form factor was determined from the observed distribution of the e+e- invariant mass. Using this form factor in the calculation of the detector acceptance, the branching ratio was measured to be B(KL→e+e-γγ,E γ*>5 MeV) = (5.84±0.15 (stat) ±0.32 (syst)) ×10-7.",

author = "A. Alavi-Harati and T. Alexopoulos and M. Arenton and K. Arisaka and S. Averitte and Barker, {A. R.} and L. Bellantoni and A. Bellavance and J. Belz and R. Ben-David and Bergman, {D. R.} and E. Blucher and Bock, {G. J.} and C. Bown and S. Bright and E. Cheu and S. Childress and R. Coleman and Corcoran, {M. D.} and G. Corti and B. Cox and Crisler, {M. B.} and Erwin, {A. R.} and R. Ford and Fordyce, {P. M.} and A. Glazov and A. Golossanov and G. Graham and J. Graham and K. Hagan and E. Halkiadakis and K. Hanagaki and S. Hidaka and Hsiung, {Y. B.} and V. Jejer and Jensen, {D. A.} and R. Kessler and Kobrak, {H. G.E.} and J. LaDue and A. Lath and A. Ledovskoy and McBride, {P. L.} and P. Mikelsons and E. Monnier and T. Nakaya and Nelson, {K. S.} and H. Nguyen and V. O'Dell and M. Pang and R. Pordes and V. Prasad and C. Qiao and B. Quinn and Ramberg, {E. J.} and Ray, {R. E.} and A. Roodman and M. Sadamoto and S. Schnetzer and K. Senyo and P. Shanahan and Shawhan, {P. S.} and W. Slater and N. Solomey and Somalwar, {S. V.} and Stone, {R. L.} and I. Suzuki and Swallow, {E. C.} and Taegar, {S. A.} and Tesarek, {R. J.} and Thomson, {G. B.} and Toale, {P. A.} and A. Tripathi and R. Tschirhart and Wah, {Y. W.} and J. Wang and White, {H. B.} and J. Whitmore and B. Winstein and R. Winston and T. Yamanaka and Zimmerman, {E. D.}",

year = "2001",

doi = "10.1103/PhysRevD.64.012003",

language = "English (US)",

volume = "64",

pages = "120031--120034",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "0556-2821",

publisher = "American Institute of Physics",

number = "1",

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TY - JOUR

T1 - Measurement of the branching ratio of KL→e+e-γγ

AU - Alavi-Harati, A.

AU - Alexopoulos, T.

AU - Arenton, M.

AU - Arisaka, K.

AU - Averitte, S.

AU - Barker, A. R.

AU - Bellantoni, L.

AU - Bellavance, A.

AU - Belz, J.

AU - Ben-David, R.

AU - Bergman, D. R.

AU - Blucher, E.

AU - Bock, G. J.

AU - Bown, C.

AU - Bright, S.

AU - Cheu, E.

AU - Childress, S.

AU - Coleman, R.

AU - Corcoran, M. D.

AU - Corti, G.

AU - Cox, B.

AU - Crisler, M. B.

AU - Erwin, A. R.

AU - Ford, R.

AU - Fordyce, P. M.

AU - Glazov, A.

AU - Golossanov, A.

AU - Graham, G.

AU - Graham, J.

AU - Hagan, K.

AU - Halkiadakis, E.

AU - Hanagaki, K.

AU - Hidaka, S.

AU - Hsiung, Y. B.

AU - Jejer, V.

AU - Jensen, D. A.

AU - Kessler, R.

AU - Kobrak, H. G.E.

AU - LaDue, J.

AU - Lath, A.

AU - Ledovskoy, A.

AU - McBride, P. L.

AU - Mikelsons, P.

AU - Monnier, E.

AU - Nakaya, T.

AU - Nelson, K. S.

AU - Nguyen, H.

AU - O'Dell, V.

AU - Pang, M.

AU - Pordes, R.

AU - Prasad, V.

AU - Qiao, C.

AU - Quinn, B.

AU - Ramberg, E. J.

AU - Ray, R. E.

AU - Roodman, A.

AU - Sadamoto, M.

AU - Schnetzer, S.

AU - Senyo, K.

AU - Shanahan, P.

AU - Shawhan, P. S.

AU - Slater, W.

AU - Solomey, N.

AU - Somalwar, S. V.

AU - Stone, R. L.

AU - Suzuki, I.

AU - Swallow, E. C.

AU - Taegar, S. A.

AU - Tesarek, R. J.

AU - Thomson, G. B.

AU - Toale, P. A.

AU - Tripathi, A.

AU - Tschirhart, R.

AU - Wah, Y. W.

AU - Wang, J.

AU - White, H. B.

AU - Whitmore, J.

AU - Winstein, B.

AU - Winston, R.

AU - Yamanaka, T.

AU - Zimmerman, E. D.

PY - 2001

Y1 - 2001

N2 - We report on a study of the decay KL→e+e-γγcarried out as a part of the KTeV/E799 experiment at Fermilab. The 1997 data yielded a sample of 1543 events, including an expected background of 56±8 events. An effective form factor was determined from the observed distribution of the e+e- invariant mass. Using this form factor in the calculation of the detector acceptance, the branching ratio was measured to be B(KL→e+e-γγ,E γ*>5 MeV) = (5.84±0.15 (stat) ±0.32 (syst)) ×10-7.

AB - We report on a study of the decay KL→e+e-γγcarried out as a part of the KTeV/E799 experiment at Fermilab. The 1997 data yielded a sample of 1543 events, including an expected background of 56±8 events. An effective form factor was determined from the observed distribution of the e+e- invariant mass. Using this form factor in the calculation of the detector acceptance, the branching ratio was measured to be B(KL→e+e-γγ,E γ*>5 MeV) = (5.84±0.15 (stat) ±0.32 (syst)) ×10-7.

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U2 - 10.1103/PhysRevD.64.012003

DO - 10.1103/PhysRevD.64.012003

M3 - Article

AN - SCOPUS:17444437908

SN - 0556-2821

VL - 64

SP - 120031

EP - 120034

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 1

M1 - 012003

ER -

Measurement of the branching ratio of K_L→e⁺e^-γγ

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