Artículos de revistas
Search for the Rare Decays K-L -> pi(0)pi(0)mu(+)mu(-) and K-L -> pi(0)pi X-0(0) -> pi(0)pi(0)mu(+)mu(-)
Registro en:
Physical Review Letters. Amer Physical Soc, v. 107, n. 20, 2011.
0031-9007
WOS:000297131300001
10.1103/PhysRevLett.107.201803
Autor
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
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) The KTeV E799 experiment has conducted a search for the rare decays, K-L -> pi(0)pi(0)mu(+)mu(-) and K-L -> pi(0)pi X-0(0) -> pi(0)pi(0)mu(+)mu(-), where the X-0 is a possible new neutral boson that was reported by the HyperCP experiment with a mass of (214: 3 +/- 0: 5) MeV/c(2). We find no evidence for either decay. We obtain upper limits of Br(K-L -> pi(0)pi(0)mu(+)mu(-) -> pi(0)pi X-0(0) -> pi(0)pi(0)mu(+)mu(-) ) < 1.0 x 10(-10) and Br(K-L -> pi(0)pi(0)mu(+)mu(-)) < 9.2 x 10(-11) at the 90% confidence level. This result rules out the pseudoscalar X-0 as an explanation of the HyperCP K-L result under the scenario that the (d) over bar sX(0) coupling is completely real. 107 20 U.S. Department of Energy U.S. National Science Foundation Ministry of Education and Science of Japan Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)