Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Niclasen R"'
Autor:
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., Kotera, K., Ledovskoy, A., McBride, P. L., Monnier, E., Nguyen, H., Niclasen, R., Phillips II, D. G., Ramberg, E. J., Ray, R. E., Ronquest, M., Santos, E., 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. J., Winstein, B., Winston, R., Worcester, E. T., Yamanaka, T., Zimmerman, E. D., Zukanovich, R. F.
Publikováno v:
Phys. Rev. D 100, 032003 (2019)
We present a measurement of $B(\pi^0 \rightarrow e^+e^- \gamma)/B(\pi^0 \rightarrow \gamma\gamma)$, the Dalitz branching ratio, using data taken in 1999 by the E832 KTeV experiment at Fermi National Accelerator Laboratory. We use neutral pions from f
Externí odkaz:
http://arxiv.org/abs/1902.01375
Autor:
KTeV Collaboration, 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., Kotera, K., Ledovskoy, A., McBride, P. L., Monnier, E., Nguyen, H., Niclasen, R., Phillips II, D. G., Ping, H., Ramberg, E. J., Ray, R. E., Ronquest, M., Santos, E., Slater, W., Smith, D., Solomey, N., Swallow, E. C., Toale, P. A., Tschirhart, R., Velissaris, C., Wah, Y. W., Wang, J., White, H. B., Whitmore, J., Wilking, M. J., Winston, R., Worcester, E. T., Worcester, M., Yamanaka, T., Zimmerman, E. D., Zukanovich, R. F.
Publikováno v:
Phys.Rev.Lett107:201803,2011
The KTeV E799 experiment has conducted a search for the rare decays KL->pi0pi0mu+mu- and KL->pi0pi0X0->pi0pi0mu+mu-, where the X0 is a possible new neutral boson that was reported by the HyperCP experiment with a mass of (214.3 pm 0.5) MeV/c^{2}. We
Externí odkaz:
http://arxiv.org/abs/1105.4800
Autor:
KTeV Collaboration, Abouzaid, E., Arenton, M., Barker, A. R., Barrio, M., Bellantoni, L., Blucher, E., Bock, G. J., Bown, C., Cheu, E., Coleman, R., Corcoran, M. D., Cox, B., Erwin, A. R., Escobar, C. O., Glazov, A., Golossanov, A., Gomes, R. A., Gouffon, P., Graham, J., Hamm, J., Hsiung, Y. B., Jensen, D. A., Kessler, R., Kotera, K., LaDue, J., Ledovskoy, A., McBride, P. L., Monnier, E., Nguyen, H., Niclasen, R., Phillips II, D. G., Prasad, V., Qi, X. R., Ramberg, E. J., Ray, R. E., Ronquest, M., Roodman, A., Santos, E., Shanahan, P., Shawhan, P. S., Slater, W., Smith, D., Solomey, N., Swallow, E. C., Taegar, S. A., Toale, P. A., Tschirhart, R., Wah, Y. W., Wang, J., White, H. B., Whitmore, J., Wilking, M. J., Winstein, B., Winston, R., Worcester, E. T., Yamanaka, T., Zimmerman, E. D., Zukanovich, R. F.
Publikováno v:
Phys.Rev.D83:092001,2011
We present precise tests of CP and CPT symmetry based on the full dataset of K to pipi decays collected by the KTeV experiment at Fermi National Accelerator Laboratory during 1996, 1997, and 1999. This dataset contains 16 million K to 2pi0 and 69 mil
Externí odkaz:
http://arxiv.org/abs/1011.0127
Autor:
KTeV Collaboration, 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., Kotera, K., Ledovskoy, A., McBride, P. L., Monnier, E., Nguyen, H., Niclasen, R., Phillips II, D. G., Ramberg, E. J., Ray, R. E., Ronquest, M., Santos, E., 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. J., Winstein, B., Winston, R., Worcester, E. T., Yamanaka, T., Zimmerman, E. D., Zukanovich, R. F.
Publikováno v:
Phys.Rev.D77:112004,2008
We report on a new measurement of the branching ratio B(KL->pi0 gamma gamma)using the KTeV detector. We reconstruct 1982 events with an estimated background of 608, that results in B(KL -> pi0 gamma gamma) = (1.29 +/- 0.03(stat) +/- 0.05(syst)) x 10*
Externí odkaz:
http://arxiv.org/abs/0805.0031
Autor:
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., Kotera, K., Ledovskoy, A., McBride, P. L., Monnier, E., Nguyen, H., Niclasen, R., Phillips II, D. G., Ramberg, E. J., Ray, R. E., Ronquest, M., Santos, E., 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. J., Winstein, B., Winston, R., Worcester, E. T., Yamanaka, T., Zimmerman, E. D., Zukanovich, R. F.
Publikováno v:
Phys.Rev.Lett.100:182001,2008
We present a new determination of the parity of the neutral pion via the double Dalitz decay pi^0 -> e+ e- e+ e-. Our sample, which consists of 30511 candidate decays, was collected from K_L -> pi0 pi0 pi0 decays in flight at the KTeV-E799 experiment
Externí odkaz:
http://arxiv.org/abs/0802.2064
Autor:
KTeV Collaboration, Abouzaid, E., Arenton, M., Barker, A. R., Bellantoni, L., Blucher, E., Bock, G. J., Cheu, E., Coleman, R., Corcoran, M. D., Corti, G., 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., Kotera, K., Ledovskoy, A., McBride, P. L., Monnier, E., Nguyen, H., Niclasen, R., Phillips II, D. G., Ping, H., Ramberg, E. J., Ray, R. E., Ronquest, M., Santos, E., Shields, J., Slater, W., Smith, D., Solomey, N., Swallow, E. C., Toale, P. A., Tschirhart, R., Velissaris, C., Wah, Y. W., Wang, J., White, H. B., Whitmore, J., Wilking, M., Winston, R., Worcester, E. T., Worcester, M., Yamanaka, T., Zimmerman, E. D., Zukanovich, R. F.
Publikováno v:
Phys.Rev.D78:032014,2008
The KTeV E799 experiment has conducted a search for the rare decay $K_{L}\to\pi^{0}\pi^{0}\gamma$ via the topology $K_{L}\to\pi^{0}\pi^{0}_D\gamma$ (where $\pi^0_D\to\gamma e^+e^-$). Due to Bose statistics of the $\pi^0$ pair and the real nature of t
Externí odkaz:
http://arxiv.org/abs/0708.2874
Autor:
KTeV Collaboration, Abouzaid, E., Arenton, M., Barker, A. R., Bellantoni, L., Blucher, E., Bock, G. J., Cheu, E., Coleman, R., 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., Kim, Y. J., Kotera, K., Ledovskoy, A., McBride, P. L., Monnier, E., Nelson, K. S., Nguyen, H., Niclasen, R., Phillips II, D. G., Ping, H., Ramberg, E. J., Ray, R. E., Ronquest, M., Santos, E., Slater, W., Smith, D., Solomey, N., Swallow, E. C., Toale, P. A., Tschirhart, R., Velissaris, C., Wah, Y. W., Wang, J., White, H. B., Whitmore, J., Wilking, M. J., Winston, R., Worcester, E. T., Worcester, M., Yamanaka, T., Zimmerman, E. D., Zukanovich, R. F.
Publikováno v:
Phys.Rev.D76:052001,2007
We report on a new measurement of the branching ratio B(KL -> pi0 e+ e- gamma) using the KTeV detector. This analysis uses the full KTeV data set collected from 1997 to 2000. We reconstruct 139 events over a background of 14, which results in B(KL ->
Externí odkaz:
http://arxiv.org/abs/0706.4074
Autor:
KTeV Collaboration, Abouzaid, E., Alexopoulos, T., Arenton, M., Barbosa, R. F., Barker, A. R., Bellantoni, L., Bellavance, A., 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., Hanagaki, K., Hsiung, Y. B., Huang, H., Jensen, D. A., Kessler, R., Kotera, K., LaDue, J., Ledovskoy, A., McBride, P. L., Monnier, E., Nelson, K. S., Nguyen, H., Niclasen, R., Ping, H., Prasad, V., Qi, X. R., Ramberg, E. J., Ray, R. E., Ronquest, M., Santos, E., Shields, J., Slater, W., Smith, D., Solomey, N., Swallow, E. C., Toale, P. A., Tschirhart, R., Velissaris, C., Wah, Y. W., Wang, J., White, H. B., Whitmore, J., Wilking, M., Winstein, B., Winston, R., Worcester, E. T., Worcester, M., Yamanaka, T., Zimmerman, E. D., Zukanovich, R. F.
Publikováno v:
Phys.Rev.Lett.95:081801,2005
The Xi^0 muon semi-leptonic decay has been observed for the first time with nine identified events using the KTeV beam line and detector at Fermilab. The decay is normalized to the Xi^0 beta decay mode and yields a value for the ratio of decay rates
Externí odkaz:
http://arxiv.org/abs/hep-ex/0504055
Autor:
Alexopoulos, T., Andre, 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.
Publikováno v:
Phys.Rev.D71:012001,2005
We present measurements of R_Kl3rad = Gamma(KL->\pi\ell\nu\gamma; Egcm > 10 MeV)/Gamma(KL->\pi\ell\nu), where ell = mu or e, and Egcm is the photon energy in the kaon rest frame. These measurements are based on KL decays collected in 1997 by the KTeV
Externí odkaz:
http://arxiv.org/abs/hep-ex/0410070
Publikováno v:
Nucl.Phys. B633 (2002) 97-113
It has been conjectured that spontaneous chiral symmetry breaking in strongly coupled vectorlike gauge theories falls into only three different classes, depending on the gauge group and the representations carried by the fermions. We test this propos
Externí odkaz:
http://arxiv.org/abs/hep-lat/0110028