Search for the Rare Decays KL→π0π0μ +μ- and KL→π0π0X0→π0π 0μ+μ-

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; H. Ping; E. J. Ramberg; R. E. Ray; M. Ronquest; E. Santos; W. Slater; D. Smith; N. Solomey; E. C. Swallow; P. A. Toale; R. Tschirhart; C. Velissaris; Y. W. Wah; J. Wang; H. B. White; J. Whitmore; M. J. Wilking; R. Winston; E. T. Worcester; M. Worcester; T. Yamanaka; E. D. Zimmerman; R. F. Zukanovich

doi:10.1103/PhysRevLett.107.201803

Search for the Rare Decays K_L→π0π0μ ⁺μ^- and K_L→π0π0X0→π0π 0μ⁺μ^-

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, H. Ping, E. J. Ramberg, R. E. Ray, M. Ronquest, E. Santos, W. Slater, D. Smith, N. Solomey, E. C. Swallow, P. A. Toale, R. Tschirhart, C. Velissaris, Y. W. Wah, J. Wang, H. B. White, J. Whitmore, M. J. Wilking, R. Winston, E. T. Worcester, M. Worcester, T. Yamanaka, E. D. Zimmerman, R. F. Zukanovich

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Abstract

The KTeV E799 experiment has conducted a search for the rare decays, K _L→π0π0μ⁺μ^- and K _L→π0π0X0→π0π0μ⁺μ^-, where the X0 is a possible new neutral boson that was reported by the HyperCP experiment with a mass of (214.3±0.5)MeV/c2. We find no evidence for either decay. We obtain upper limits of Br(K_L→π0π0X0→ π0π0μ⁺μ^-)<1.0×10^-10 and Br(K_L→π0π0μ⁺μ^-)<9. 2×10^-11 at the 90% confidence level. This result rules out the pseudoscalar X0 as an explanation of the HyperCP result under the scenario that the d̄sX0 coupling is completely real.

Original language	English (US)
Article number	201803
Journal	Physical review letters
Volume	107
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.107.201803
State	Published - Nov 9 2011
Externally published	Yes

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10.1103/PhysRevLett.107.201803

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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. (2011). Search for the Rare Decays K_L→π0π0μ ⁺μ^- and K_L→π0π0X0→π0π 0μ⁺μ^-. Physical review letters, 107(20), Article 201803. https://doi.org/10.1103/PhysRevLett.107.201803

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, Ping, H, Ramberg, EJ, Ray, RE, Ronquest, M, Santos, E, Slater, W, Smith, D, Solomey, N, Swallow, EC, Toale, PA, Tschirhart, R, Velissaris, C, Wah, YW, Wang, J, White, HB, Whitmore, J, Wilking, MJ, Winston, R, Worcester, ET, Worcester, M, Yamanaka, T, Zimmerman, ED & Zukanovich, RF 2011, 'Search for the Rare Decays K_L→π0π0μ ⁺μ^- and K_L→π0π0X0→π0π 0μ⁺μ^-', Physical review letters, vol. 107, no. 20, 201803. https://doi.org/10.1103/PhysRevLett.107.201803

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title = "Search for the Rare Decays KL→π0π0μ +μ- and KL→π0π0X0→π0π 0μ+μ-",

abstract = "The KTeV E799 experiment has conducted a search for the rare decays, K L→π0π0μ+μ- and K L→π0π0X0→π0π0μ+μ-, where the X0 is a possible new neutral boson that was reported by the HyperCP experiment with a mass of (214.3±0.5)MeV/c2. We find no evidence for either decay. We obtain upper limits of Br(KL→π0π0X0→ π0π0μ+μ-)<1.0×10-10 and Br(KL→π0π0μ+μ-)<9. 2×10-11 at the 90% confidence level. This result rules out the pseudoscalar X0 as an explanation of the HyperCP result under the scenario that the {\=d}sX0 coupling is completely real.",

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 H. Ping 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 C. Velissaris and Wah, {Y. W.} and J. Wang and White, {H. B.} and J. Whitmore and Wilking, {M. J.} and R. Winston and Worcester, {E. T.} and M. Worcester and T. Yamanaka and Zimmerman, {E. D.} and Zukanovich, {R. F.}",

year = "2011",

month = nov,

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doi = "10.1103/PhysRevLett.107.201803",

language = "English (US)",

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T1 - Search for the Rare Decays KL→π0π0μ +μ- and KL→π0π0X0→π0π 0μ+μ-

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 - Ping, H.

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 - Velissaris, C.

AU - Wah, Y. W.

AU - Wang, J.

AU - White, H. B.

AU - Whitmore, J.

AU - Wilking, M. J.

AU - Winston, R.

AU - Worcester, E. T.

AU - Worcester, M.

AU - Yamanaka, T.

AU - Zimmerman, E. D.

AU - Zukanovich, R. F.

PY - 2011/11/9

Y1 - 2011/11/9

N2 - The KTeV E799 experiment has conducted a search for the rare decays, K L→π0π0μ+μ- and K L→π0π0X0→π0π0μ+μ-, where the X0 is a possible new neutral boson that was reported by the HyperCP experiment with a mass of (214.3±0.5)MeV/c2. We find no evidence for either decay. We obtain upper limits of Br(KL→π0π0X0→ π0π0μ+μ-)<1.0×10-10 and Br(KL→π0π0μ+μ-)<9. 2×10-11 at the 90% confidence level. This result rules out the pseudoscalar X0 as an explanation of the HyperCP result under the scenario that the d̄sX0 coupling is completely real.

AB - The KTeV E799 experiment has conducted a search for the rare decays, K L→π0π0μ+μ- and K L→π0π0X0→π0π0μ+μ-, where the X0 is a possible new neutral boson that was reported by the HyperCP experiment with a mass of (214.3±0.5)MeV/c2. We find no evidence for either decay. We obtain upper limits of Br(KL→π0π0X0→ π0π0μ+μ-)<1.0×10-10 and Br(KL→π0π0μ+μ-)<9. 2×10-11 at the 90% confidence level. This result rules out the pseudoscalar X0 as an explanation of the HyperCP result under the scenario that the d̄sX0 coupling is completely real.

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UR - http://www.scopus.com/inward/citedby.url?scp=81055149788&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.107.201803

DO - 10.1103/PhysRevLett.107.201803

M3 - Article

AN - SCOPUS:81055149788

SN - 0031-9007

VL - 107

JO - Physical review letters

JF - Physical review letters

IS - 20

M1 - 201803

ER -

Search for the Rare Decays K_L→π0π0μ ⁺μ^- and K_L→π0π0X0→π0π 0μ⁺μ^-

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