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 K_L 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

Physics

Research output: Contribution to journal › Article › peer-review

87 Scopus citations

Abstract

We present new measurements of the six largest branching fractions of the K_L using data collected in 1997 by the KTeV experiment (E832) at Fermilab. The results are B(K_L → π^±e ^∓ν) = 0.4067 ± 0.0011, B(K_L → π^±μ^∓ν) = 0.2701 ± 0.0009, B(K_L → π⁺π^-π⁰) = 0.1252 ± 0.0007, B(K_L → π⁰π ⁰π⁰) = 0.1945 ± 0.0018, B(K_L → π⁺π^-) = (1.975 ± 0.012) × 10 ^-3, and B(K_L → 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 (US)
Article number	092006
Pages (from-to)	092006-1-092006-20
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	70
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.70.092006
State	Published - Nov 2004

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1103/PhysRevD.70.092006

Cite this

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 K_L branching fractions and the CP violation parameter |η_+-|. Physical Review D - Particles, Fields, Gravitation and Cosmology, 70(9), 092006-1-092006-20. [092006]. https://doi.org/10.1103/PhysRevD.70.092006

Measurements of K_L branching fractions and the CP violation parameter |η_+-|. / 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.; Hanagaki, K.; Hsiung, Y. B.; Huang, H.; Jejer, V.; Jensen, D. A.; Kessler, R.; Kobrak, H. G.E.; Kotera, K.; LaDue, J.; Ledovskoy, A.; McBride, P. L.; Monnier, E.; Nelson, K. S.; Nguyen, H.; Niclasen, R.; Prasad, V.; Qi, X. R.; Ramberg, E. J.; Ray, R. E.; Ronquest, M.; Santos, E.; Shanahan, P.; Shields, J.; Slater, W.; Smith, D.; Solomey, N.; Swallow, E. C.; Toale, P. A.; Tschirhart, R.; Wah, Y. W.; Wang, J.; White, H. B.; Whitmore, J.; Wilking, M.; Winstein, B.; Winston, R.; Worcester, E. T.; Yamanaka, T.; Zimmerman, E. D.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 70, No. 9, 092006, 11.2004, p. 092006-1-092006-20.

Research output: Contribution to journal › Article › peer-review

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 K_L branching fractions and the CP violation parameter |η_+-|', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 70, no. 9, 092006, pp. 092006-1-092006-20. https://doi.org/10.1103/PhysRevD.70.092006

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. ; Hanagaki, K. ; Hsiung, Y. B. ; Huang, H. ; Jejer, V. ; Jensen, D. A. ; Kessler, R. ; Kobrak, H. G.E. ; Kotera, K. ; LaDue, J. ; Ledovskoy, A. ; McBride, P. L. ; Monnier, E. ; Nelson, K. S. ; Nguyen, H. ; Niclasen, R. ; Prasad, V. ; Qi, X. R. ; Ramberg, E. J. ; Ray, R. E. ; Ronquest, M. ; Santos, E. ; Shanahan, P. ; Shields, J. ; Slater, W. ; Smith, D. ; Solomey, N. ; Swallow, E. C. ; Toale, P. A. ; Tschirhart, R. ; Wah, Y. W. ; Wang, J. ; White, H. B. ; Whitmore, J. ; Wilking, M. ; Winstein, B. ; Winston, R. ; Worcester, E. T. ; Yamanaka, T. ; Zimmerman, E. D. / Measurements of K_L branching fractions and the CP violation parameter |η_+-|. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2004 ; Vol. 70, No. 9. pp. 092006-1-092006-20.

@article{a08d964db62c44eea36d9fab81e23955,

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.}",

note = "Funding Information: We gratefully acknowledge the support and effort of the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported in part by the U.S. Department of Energy, The National Science Foundation, and The Ministry of Education, and Science of Japan.",

year = "2004",

month = nov,

doi = "10.1103/PhysRevD.70.092006",

language = "English (US)",

volume = "70",

pages = "092006--1--092006--20",

journal = "Physical review D: Particles and fields",

issn = "0556-2821",

publisher = "American Institute of Physics",

number = "9",

}

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.

N1 - Funding Information: We gratefully acknowledge the support and effort of the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported in part by the U.S. Department of Energy, The National Science Foundation, and The Ministry of Education, and Science of Japan.

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.

UR - http://www.scopus.com/inward/record.url?scp=42749102125&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=42749102125&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.70.092006

DO - 10.1103/PhysRevD.70.092006

M3 - Article

AN - SCOPUS:42749102125

VL - 70

SP - 092006-1-092006-20

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 9

M1 - 092006

ER -

Measurements of K_L branching fractions and the CP violation parameter |η_+-|

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this