Detailed study of the KL→π0π0π0 Dalitz plot

E. Abouzaid; M. Arenton; A. R. Barker; L. Bellantoni; E. Blucher; G. J. Bock; E. Cheu; R. Coleman; M. D. Corcoran; B. Cox; A. R. Erwin; C. O. Escobar; A. Glazov; A. Golossanov; R. A. Gomes; P. Gouffon; Y. B. Hsiung; D. A. Jensen; R. Kessler; K. Kotera; A. Ledovskoy; P. L. McBride; E. Monnier; H. Nguyen; R. Niclasen; D. G. Phillips; E. J. Ramberg; R. E. Ray; M. Ronquest; E. Santos; W. Slater; D. Smith; N. Solomey; E. C. Swallow; P. A. Toale; R. Tschirhart; Y. W. Wah; J. Wang; H. B. White; J. Whitmore; M. J. Wilking; B. Winstein; R. Winston; E. T. Worcester; T. Yamanaka; E. D. Zimmerman; R. F. Zukanovich

doi:10.1103/PhysRevD.78.032009

Detailed study of the KL→π0π0π0 Dalitz plot

E. Abouzaid, M. Arenton, A. R. Barker, L. Bellantoni, E. Blucher, G. J. Bock, E. Cheu, R. Coleman, M. D. Corcoran, B. Cox, A. R. Erwin, C. O. Escobar, A. Glazov, A. Golossanov, R. A. Gomes, P. Gouffon, Y. B. Hsiung, D. A. Jensen, R. Kessler, K. KoteraA. Ledovskoy, P. L. McBride, E. Monnier, H. Nguyen, R. Niclasen, D. G. Phillips, E. J. Ramberg, R. E. Ray, M. Ronquest, E. Santos, W. Slater, D. Smith, N. Solomey, E. C. Swallow, P. A. Toale, R. Tschirhart, Y. W. Wah, J. Wang, H. B. White, J. Whitmore, M. J. Wilking, B. Winstein, R. Winston, E. T. Worcester, T. Yamanaka, E. D. Zimmerman, R. F. Zukanovich

Physics

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Abstract

Using a sample of 68.3×106 KL→π0π0π0 decays collected in 1996-1999 by the KTeV (E832) experiment at Fermilab, we present a detailed study of the KL→π0π0π0 Dalitz plot density. We report the first observation of interference from KL→π+π-π0 decays in which π+π- rescatters to π0π0 in a final-state interaction. This rescattering effect is described by the Cabibbo-Isidori model, and it depends on the difference in pion scattering lengths between the isospin I=0 and I=2 states, a0-a2. Using the Cabibbo-Isidori model, and fixing (a0-a2)mπ+=0. 268±0.017 as measured by the CERN-NA48 collaboration, we present the first measurement of the KL→π0π0π0 quadratic slope parameter that accounts for the rescattering effect: h000=(+0.59±0.20stat±0. 48syst±1.06ext)×10-3, where the uncertainties are from data statistics, KTeV systematic errors, and external systematic errors. Fitting for both h000 and a0-a2, we find h000=(-2.09±0.62stat±0. 72syst±0.28ext)×10-3, and mπ+(a0-a2)=0.215±0. 014stat±0.025syst±0.006ext; our value for a0-a2 is consistent with that from NA48.

Original language	English (US)
Article number	032009
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	78
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.78.032009
State	Published - Aug 15 2008

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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Abouzaid, E., Arenton, M., Barker, A. R., Bellantoni, L., Blucher, E., Bock, G. J., Cheu, E., Coleman, R., Corcoran, M. D., Cox, B., Erwin, A. R., Escobar, C. O., Glazov, A., Golossanov, A., Gomes, R. A., Gouffon, P., Hsiung, Y. B., Jensen, D. A., Kessler, R., ... Zukanovich, R. F. (2008). Detailed study of the KL→π0π0π0 Dalitz plot. Physical Review D - Particles, Fields, Gravitation and Cosmology, 78(3), Article 032009. https://doi.org/10.1103/PhysRevD.78.032009

Abouzaid, E, Arenton, M, Barker, AR, Bellantoni, L, Blucher, E, Bock, GJ, Cheu, E, Coleman, R, Corcoran, MD, Cox, B, Erwin, AR, Escobar, CO, Glazov, A, Golossanov, A, Gomes, RA, Gouffon, P, Hsiung, YB, Jensen, DA, Kessler, R, Kotera, K, Ledovskoy, A, McBride, PL, Monnier, E, Nguyen, H, Niclasen, R, Phillips, DG, Ramberg, EJ, Ray, RE, Ronquest, M, Santos, E, Slater, W, Smith, D, Solomey, N, Swallow, EC, Toale, PA, Tschirhart, R, Wah, YW, Wang, J, White, HB, Whitmore, J, Wilking, MJ, Winstein, B, Winston, R, Worcester, ET, Yamanaka, T, Zimmerman, ED & Zukanovich, RF 2008, 'Detailed study of the KL→π0π0π0 Dalitz plot', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 78, no. 3, 032009. https://doi.org/10.1103/PhysRevD.78.032009

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title = "Detailed study of the KL→π0π0π0 Dalitz plot",

abstract = "Using a sample of 68.3×106 KL→π0π0π0 decays collected in 1996-1999 by the KTeV (E832) experiment at Fermilab, we present a detailed study of the KL→π0π0π0 Dalitz plot density. We report the first observation of interference from KL→π+π-π0 decays in which π+π- rescatters to π0π0 in a final-state interaction. This rescattering effect is described by the Cabibbo-Isidori model, and it depends on the difference in pion scattering lengths between the isospin I=0 and I=2 states, a0-a2. Using the Cabibbo-Isidori model, and fixing (a0-a2)mπ+=0. 268±0.017 as measured by the CERN-NA48 collaboration, we present the first measurement of the KL→π0π0π0 quadratic slope parameter that accounts for the rescattering effect: h000=(+0.59±0.20stat±0. 48syst±1.06ext)×10-3, where the uncertainties are from data statistics, KTeV systematic errors, and external systematic errors. Fitting for both h000 and a0-a2, we find h000=(-2.09±0.62stat±0. 72syst±0.28ext)×10-3, and mπ+(a0-a2)=0.215±0. 014stat±0.025syst±0.006ext; our value for a0-a2 is consistent with that from NA48.",

author = "E. Abouzaid and M. Arenton and Barker, {A. R.} and L. Bellantoni and E. Blucher and Bock, {G. J.} and E. Cheu and R. Coleman and Corcoran, {M. D.} and B. Cox and Erwin, {A. R.} and Escobar, {C. O.} and A. Glazov and A. Golossanov and Gomes, {R. A.} and P. Gouffon and Hsiung, {Y. B.} and Jensen, {D. A.} and R. Kessler and K. Kotera and A. Ledovskoy and McBride, {P. L.} and E. Monnier and H. Nguyen and R. Niclasen and Phillips, {D. G.} and Ramberg, {E. J.} and Ray, {R. E.} and M. Ronquest and E. Santos and W. Slater and D. Smith and N. Solomey and Swallow, {E. C.} and Toale, {P. A.} and R. Tschirhart and Wah, {Y. W.} and J. Wang and White, {H. B.} and J. Whitmore and Wilking, {M. J.} and B. Winstein and R. Winston and Worcester, {E. T.} and T. Yamanaka and Zimmerman, {E. D.} and Zukanovich, {R. F.}",

year = "2008",

month = aug,

day = "15",

doi = "10.1103/PhysRevD.78.032009",

language = "English (US)",

volume = "78",

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

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T1 - Detailed study of the KL→π0π0π0 Dalitz plot

AU - Abouzaid, E.

AU - Arenton, M.

AU - Barker, A. R.

AU - Bellantoni, L.

AU - Blucher, E.

AU - Bock, G. J.

AU - Cheu, E.

AU - Coleman, R.

AU - Corcoran, M. D.

AU - Cox, B.

AU - Erwin, A. R.

AU - Escobar, C. O.

AU - Glazov, A.

AU - Golossanov, A.

AU - Gomes, R. A.

AU - Gouffon, P.

AU - Hsiung, Y. B.

AU - Jensen, D. A.

AU - Kessler, R.

AU - Kotera, K.

AU - Ledovskoy, A.

AU - McBride, P. L.

AU - Monnier, E.

AU - Nguyen, H.

AU - Niclasen, R.

AU - Phillips, D. G.

AU - Ramberg, E. J.

AU - Ray, R. E.

AU - Ronquest, M.

AU - Santos, E.

AU - Slater, W.

AU - Smith, D.

AU - Solomey, N.

AU - Swallow, E. C.

AU - Toale, P. A.

AU - Tschirhart, R.

AU - Wah, Y. W.

AU - Wang, J.

AU - White, H. B.

AU - Whitmore, J.

AU - Wilking, M. J.

AU - Winstein, B.

AU - Winston, R.

AU - Worcester, E. T.

AU - Yamanaka, T.

AU - Zimmerman, E. D.

AU - Zukanovich, R. F.

PY - 2008/8/15

Y1 - 2008/8/15

N2 - Using a sample of 68.3×106 KL→π0π0π0 decays collected in 1996-1999 by the KTeV (E832) experiment at Fermilab, we present a detailed study of the KL→π0π0π0 Dalitz plot density. We report the first observation of interference from KL→π+π-π0 decays in which π+π- rescatters to π0π0 in a final-state interaction. This rescattering effect is described by the Cabibbo-Isidori model, and it depends on the difference in pion scattering lengths between the isospin I=0 and I=2 states, a0-a2. Using the Cabibbo-Isidori model, and fixing (a0-a2)mπ+=0. 268±0.017 as measured by the CERN-NA48 collaboration, we present the first measurement of the KL→π0π0π0 quadratic slope parameter that accounts for the rescattering effect: h000=(+0.59±0.20stat±0. 48syst±1.06ext)×10-3, where the uncertainties are from data statistics, KTeV systematic errors, and external systematic errors. Fitting for both h000 and a0-a2, we find h000=(-2.09±0.62stat±0. 72syst±0.28ext)×10-3, and mπ+(a0-a2)=0.215±0. 014stat±0.025syst±0.006ext; our value for a0-a2 is consistent with that from NA48.

AB - Using a sample of 68.3×106 KL→π0π0π0 decays collected in 1996-1999 by the KTeV (E832) experiment at Fermilab, we present a detailed study of the KL→π0π0π0 Dalitz plot density. We report the first observation of interference from KL→π+π-π0 decays in which π+π- rescatters to π0π0 in a final-state interaction. This rescattering effect is described by the Cabibbo-Isidori model, and it depends on the difference in pion scattering lengths between the isospin I=0 and I=2 states, a0-a2. Using the Cabibbo-Isidori model, and fixing (a0-a2)mπ+=0. 268±0.017 as measured by the CERN-NA48 collaboration, we present the first measurement of the KL→π0π0π0 quadratic slope parameter that accounts for the rescattering effect: h000=(+0.59±0.20stat±0. 48syst±1.06ext)×10-3, where the uncertainties are from data statistics, KTeV systematic errors, and external systematic errors. Fitting for both h000 and a0-a2, we find h000=(-2.09±0.62stat±0. 72syst±0.28ext)×10-3, and mπ+(a0-a2)=0.215±0. 014stat±0.025syst±0.006ext; our value for a0-a2 is consistent with that from NA48.

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U2 - 10.1103/PhysRevD.78.032009

DO - 10.1103/PhysRevD.78.032009

M3 - Article

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SN - 1550-7998

VL - 78

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

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

IS - 3

M1 - 032009

ER -

Detailed study of the KL→π0π0π0 Dalitz plot

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