A determination of the cabibbo-kobayashi-maskawa parameter |VUS| using KL decays

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/PhysRevLett.93.181802

A determination of the cabibbo-kobayashi-maskawa parameter |V_US| using K_L decays

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

The KTev experiment was performed at Fermilab to determine the Cabibbo-Kobayashi-Maskawa parameter |V_us| based on new measurements of the six largest K_L branching fractions and semileptonic forms factors. The |V_us| was found to be equivalent to 0.2252±0. 0008_KTeV±0.0021_ext, where the errors were from KTeV measurements and from external sources. The CP violation parameter |η+-|=(2.228±0.005f_KTeV±0.009 _ext) ×10^-3 was determined using the measured branching fractions. The results indicate that the improved form factor measurements may help to reduce theoretical uncertainties in f₊(0).

Original language	English (US)
Article number	181802
Pages (from-to)	181802-1-181802-4
Journal	Physical review letters
Volume	93
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.93.181802
State	Published - Oct 29 2004
Externally published	Yes

Bibliographical note

Funding Information:
We gratefully acknowledge the support and effort of the Fermilab staff and the technical staffs of the partici?>pating institutions for their vital contributions. We also thank T. Andre and J. Rosner for useful discussions of radiative corrections. 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.

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10.1103/PhysRevLett.93.181802

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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). A determination of the cabibbo-kobayashi-maskawa parameter |V_US| using K_L decays. Physical review letters, 93(18), 181802-1-181802-4. Article 181802. https://doi.org/10.1103/PhysRevLett.93.181802

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, 'A determination of the cabibbo-kobayashi-maskawa parameter |V_US| using K_L decays', Physical review letters, vol. 93, no. 18, 181802, pp. 181802-1-181802-4. https://doi.org/10.1103/PhysRevLett.93.181802

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title = "A determination of the cabibbo-kobayashi-maskawa parameter |VUS| using KL decays",

abstract = "The KTev experiment was performed at Fermilab to determine the Cabibbo-Kobayashi-Maskawa parameter |Vus| based on new measurements of the six largest KL branching fractions and semileptonic forms factors. The |Vus| was found to be equivalent to 0.2252±0. 0008KTeV±0.0021ext , where the errors were from KTeV measurements and from external sources. The CP violation parameter |η+-|=(2.228±0.005fKTeV±0.009 ext) ×10-3 was determined using the measured branching fractions. The results indicate that the improved form factor measurements may help to reduce theoretical uncertainties in f+(0).",

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 partici?>pating institutions for their vital contributions. We also thank T. Andre and J. Rosner for useful discussions of radiative corrections. 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.",

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doi = "10.1103/PhysRevLett.93.181802",

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T1 - A determination of the cabibbo-kobayashi-maskawa parameter |VUS| using KL decays

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 partici?>pating institutions for their vital contributions. We also thank T. Andre and J. Rosner for useful discussions of radiative corrections. 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 - 2004/10/29

Y1 - 2004/10/29

N2 - The KTev experiment was performed at Fermilab to determine the Cabibbo-Kobayashi-Maskawa parameter |Vus| based on new measurements of the six largest KL branching fractions and semileptonic forms factors. The |Vus| was found to be equivalent to 0.2252±0. 0008KTeV±0.0021ext , where the errors were from KTeV measurements and from external sources. The CP violation parameter |η+-|=(2.228±0.005fKTeV±0.009 ext) ×10-3 was determined using the measured branching fractions. The results indicate that the improved form factor measurements may help to reduce theoretical uncertainties in f+(0).

AB - The KTev experiment was performed at Fermilab to determine the Cabibbo-Kobayashi-Maskawa parameter |Vus| based on new measurements of the six largest KL branching fractions and semileptonic forms factors. The |Vus| was found to be equivalent to 0.2252±0. 0008KTeV±0.0021ext , where the errors were from KTeV measurements and from external sources. The CP violation parameter |η+-|=(2.228±0.005fKTeV±0.009 ext) ×10-3 was determined using the measured branching fractions. The results indicate that the improved form factor measurements may help to reduce theoretical uncertainties in f+(0).

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