Measurements of KL branching fractions and the CP violation parameter |η+-|

T. Alexopoulos; M. Arenton; R. F. Barbosa; A. R. Barker; L. Bellantoni; A. Bellavance; E. Blucher; G. J. Bock; E. Cheu; S. Childress; R. Coleman; M. D. Corcoran; B. Cox; A. R. Erwin; R. Ford; A. Glazov; A. Golossanov; J. Graham; J. Hamm; K. Hanagaki; Y. B. Hsiung; H. Huang; V. Jejer; D. A. Jensen; R. Kessler; H. G E Kobrak; K. Kotera; J. LaDue; A. Ledovskoy; P. L. McBride; E. Monnier; K. S. Nelson; H. Nguyen; R. Niclasen; V. Prasad; X. R. Qi; E. J. Ramberg; R. E. Ray; M. Ronquest; E. Santos; P. Shanahan; J. Shields; 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. Wilking; B. Winstein; R. Winston; E. T. Worcester; T. Yamanaka; E. D. Zimmerman

doi:10.1103/PhysRevD.70.092006

Measurements of KL branching fractions and the CP violation parameter |η+-|

T. Alexopoulos, M. Arenton, R. F. Barbosa, A. R. Barker, L. Bellantoni, A. Bellavance, E. Blucher, G. J. Bock, E. Cheu, S. Childress, R. Coleman, M. D. Corcoran, B. Cox, A. R. Erwin, R. Ford, A. Glazov, A. Golossanov, J. Graham, J. Hamm, K. HanagakiY. B. Hsiung, H. Huang, V. Jejer, D. A. Jensen, R. Kessler, H. G E Kobrak, K. Kotera, J. LaDue, A. Ledovskoy, P. L. McBride, E. Monnier, K. S. Nelson, H. Nguyen, R. Niclasen, V. Prasad, X. R. Qi, E. J. Ramberg, R. E. Ray, M. Ronquest, E. Santos, P. Shanahan, J. Shields, 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. Wilking, B. Winstein, R. Winston, E. T. Worcester, T. Yamanaka, E. D. Zimmerman

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Abstract

We present new measurements of the six largest branching fractions of the KL using data collected in 1997 by the KTeV experiment (E832) at Fermilab. The results are B(KL → π±e ∓ν) = 0.4067 ± 0.0011, B(KL → π±μ∓ν) = 0.2701 ± 0.0009, B(KL → π+π-π0) = 0.1252 ± 0.0007, B(KL → π0π 0π0) = 0.1945 ± 0.0018, B(KL → π+π-) = (1.975 ± 0.012) × 10 -3, and B(KL → π0π0) = (0.865 ± 0.010) × 10-3, where statistical and systematic errors have been summed in quadrature. We also determine the CP violation parameter |η+-| to be (2.228 ± 0.010) × 10 -3. Several of these results are not in good agreement with averages of previous measurements.

Original language	English
Article number	092006
Pages (from-to)	1-92006
Number of pages	92005
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	70
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.70.092006
Publication status	Published - Nov 2004

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Alexopoulos, T., Arenton, M., Barbosa, R. F., Barker, A. R., Bellantoni, L., Bellavance, A., Blucher, E., Bock, G. J., Cheu, E., Childress, S., Coleman, R., Corcoran, M. D., Cox, B., Erwin, A. R., Ford, R., Glazov, A., Golossanov, A., Graham, J., Hamm, J., ... Zimmerman, E. D. (2004). Measurements of KL branching fractions and the CP violation parameter |η+-|. Physical Review D - Particles, Fields, Gravitation and Cosmology, 70(9), 1-92006. Article 092006. https://doi.org/10.1103/PhysRevD.70.092006

@article{3e229ab803d546c59ea0ddf79133894f,

title = "Measurements of KL branching fractions and the CP violation parameter |η+-|",

abstract = "We present new measurements of the six largest branching fractions of the KL using data collected in 1997 by the KTeV experiment (E832) at Fermilab. The results are B(KL → π±e ∓ν) = 0.4067 ± 0.0011, B(KL → π±μ∓ν) = 0.2701 ± 0.0009, B(KL → π+π-π0) = 0.1252 ± 0.0007, B(KL → π0π 0π0) = 0.1945 ± 0.0018, B(KL → π+π-) = (1.975 ± 0.012) × 10 -3, and B(KL → π0π0) = (0.865 ± 0.010) × 10-3, where statistical and systematic errors have been summed in quadrature. We also determine the CP violation parameter |η+-| to be (2.228 ± 0.010) × 10 -3. Several of these results are not in good agreement with averages of previous measurements.",

author = "T. Alexopoulos and M. Arenton and Barbosa, {R. F.} and Barker, {A. R.} and L. Bellantoni and A. Bellavance and E. Blucher and Bock, {G. J.} and E. Cheu and S. Childress and R. Coleman and Corcoran, {M. D.} and B. Cox and Erwin, {A. R.} and R. Ford and A. Glazov and A. Golossanov and J. Graham and J. Hamm and K. Hanagaki and Hsiung, {Y. B.} and H. Huang and V. Jejer and Jensen, {D. A.} and R. Kessler and Kobrak, {H. G E} and K. Kotera and J. LaDue and A. Ledovskoy and McBride, {P. L.} and E. Monnier and Nelson, {K. S.} and H. Nguyen and R. Niclasen and V. Prasad and Qi, {X. R.} and Ramberg, {E. J.} and Ray, {R. E.} and M. Ronquest and E. Santos and P. Shanahan and J. Shields 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 M. Wilking and B. Winstein and R. Winston and Worcester, {E. T.} and T. Yamanaka and Zimmerman, {E. D.}",

year = "2004",

month = nov,

doi = "10.1103/PhysRevD.70.092006",

language = "English",

volume = "70",

pages = "1--92006",

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

issn = "1550-7998",

publisher = "American Institute of Physics",

number = "9",

}

Alexopoulos, T, Arenton, M, Barbosa, RF, Barker, AR, Bellantoni, L, Bellavance, A, Blucher, E, Bock, GJ, Cheu, E, Childress, S, Coleman, R, Corcoran, MD, Cox, B, Erwin, AR, Ford, R, Glazov, A, Golossanov, A, Graham, J, Hamm, J, Hanagaki, K, Hsiung, YB, Huang, H, Jejer, V, Jensen, DA, Kessler, R, Kobrak, HGE, Kotera, K, LaDue, J, Ledovskoy, A, McBride, PL, Monnier, E, Nelson, KS, Nguyen, H, Niclasen, R, Prasad, V, Qi, XR, Ramberg, EJ, Ray, RE, Ronquest, M, Santos, E, Shanahan, P, Shields, J, Slater, W, Smith, D, Solomey, N, Swallow, EC, Toale, PA, Tschirhart, R, Wah, YW, Wang, J, White, HB, Whitmore, J, Wilking, M, Winstein, B, Winston, R, Worcester, ET, Yamanaka, T & Zimmerman, ED 2004, 'Measurements of KL branching fractions and the CP violation parameter |η+-|', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 70, no. 9, 092006, pp. 1-92006. https://doi.org/10.1103/PhysRevD.70.092006

TY - JOUR

T1 - Measurements of KL branching fractions and the CP violation parameter |η+-|

AU - Alexopoulos, T.

AU - Arenton, M.

AU - Barbosa, R. F.

AU - Barker, A. R.

AU - Bellantoni, L.

AU - Bellavance, A.

AU - Blucher, E.

AU - Bock, G. J.

AU - Cheu, E.

AU - Childress, S.

AU - Coleman, R.

AU - Corcoran, M. D.

AU - Cox, B.

AU - Erwin, A. R.

AU - Ford, R.

AU - Glazov, A.

AU - Golossanov, A.

AU - Graham, J.

AU - Hamm, J.

AU - Hanagaki, K.

AU - Hsiung, Y. B.

AU - Huang, H.

AU - Jejer, V.

AU - Jensen, D. A.

AU - Kessler, R.

AU - Kobrak, H. G E

AU - Kotera, K.

AU - LaDue, J.

AU - Ledovskoy, A.

AU - McBride, P. L.

AU - Monnier, E.

AU - Nelson, K. S.

AU - Nguyen, H.

AU - Niclasen, R.

AU - Prasad, V.

AU - Qi, X. R.

AU - Ramberg, E. J.

AU - Ray, R. E.

AU - Ronquest, M.

AU - Santos, E.

AU - Shanahan, P.

AU - Shields, J.

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.

AU - Winstein, B.

AU - Winston, R.

AU - Worcester, E. T.

AU - Yamanaka, T.

AU - Zimmerman, E. D.

PY - 2004/11

Y1 - 2004/11

N2 - We present new measurements of the six largest branching fractions of the KL using data collected in 1997 by the KTeV experiment (E832) at Fermilab. The results are B(KL → π±e ∓ν) = 0.4067 ± 0.0011, B(KL → π±μ∓ν) = 0.2701 ± 0.0009, B(KL → π+π-π0) = 0.1252 ± 0.0007, B(KL → π0π 0π0) = 0.1945 ± 0.0018, B(KL → π+π-) = (1.975 ± 0.012) × 10 -3, and B(KL → π0π0) = (0.865 ± 0.010) × 10-3, where statistical and systematic errors have been summed in quadrature. We also determine the CP violation parameter |η+-| to be (2.228 ± 0.010) × 10 -3. Several of these results are not in good agreement with averages of previous measurements.

AB - We present new measurements of the six largest branching fractions of the KL using data collected in 1997 by the KTeV experiment (E832) at Fermilab. The results are B(KL → π±e ∓ν) = 0.4067 ± 0.0011, B(KL → π±μ∓ν) = 0.2701 ± 0.0009, B(KL → π+π-π0) = 0.1252 ± 0.0007, B(KL → π0π 0π0) = 0.1945 ± 0.0018, B(KL → π+π-) = (1.975 ± 0.012) × 10 -3, and B(KL → π0π0) = (0.865 ± 0.010) × 10-3, where statistical and systematic errors have been summed in quadrature. We also determine the CP violation parameter |η+-| to be (2.228 ± 0.010) × 10 -3. Several of these results are not in good agreement with averages of previous measurements.

U2 - 10.1103/PhysRevD.70.092006

DO - 10.1103/PhysRevD.70.092006

M3 - Article

SN - 1550-7998

VL - 70

SP - 1

EP - 92006

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

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

IS - 9

M1 - 092006

ER -

Measurements of KL branching fractions and the CP violation parameter |η+-|

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