We measure the time dependence of the ratio of decay rates for the rare decay D(0)-> K(+)pi(-) to the Cabibbo-favored decay D(0)-> K(-)pi(+). A signal of 12.7x10(3) D(0)-> K(+)pi(-) decays was obtained using the Collider Detector at Fermilab II detector at the Fermilab Tevatron with an integrated luminosity of 1.5 fb(-1). We measure the D(0)-(D) over bar (0) mixing parameters (R(D),y('),x('2)), and find that the data are inconsistent with the no-mixing hypothesis with a probability equivalent to 3.8 Gaussian standard deviations.

Evidence for D(0)-(D)over-bar(0) mixing using the CDF II detector / Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M.g., Gonzalez, B.a., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Aoki, M., Apollinari, G., Apresyan, A., Arisawa, T., Artikov, A., Ashmanskas, W., Attal, A., Aurisano, A., Azfar, F., AZZI BACCHETTA, P., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 100:(2008), pp. 121802-121802. [10.1103/physrevlett.100.121802]

Evidence for D(0)-(D)over-bar(0) mixing using the CDF II detector

DE CECCO, Sandro;DIONISI, Carlo;GIAGU, Stefano;MARGAROLI, Fabrizio;IORI, Maurizio;LUCI, Claudio;MESSINA, Andrea;SORRENTINO, Lucia;
2008

Abstract

We measure the time dependence of the ratio of decay rates for the rare decay D(0)-> K(+)pi(-) to the Cabibbo-favored decay D(0)-> K(-)pi(+). A signal of 12.7x10(3) D(0)-> K(+)pi(-) decays was obtained using the Collider Detector at Fermilab II detector at the Fermilab Tevatron with an integrated luminosity of 1.5 fb(-1). We measure the D(0)-(D) over bar (0) mixing parameters (R(D),y('),x('2)), and find that the data are inconsistent with the no-mixing hypothesis with a probability equivalent to 3.8 Gaussian standard deviations.
2008
01 Pubblicazione su rivista::01a Articolo in rivista
Evidence for D(0)-(D)over-bar(0) mixing using the CDF II detector / Aaltonen, T., Adelman, J., Akimoto, T., Albrow, M.g., Gonzalez, B.a., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Aoki, M., Apollinari, G., Apresyan, A., Arisawa, T., Artikov, A., Ashmanskas, W., Attal, A., Aurisano, A., Azfar, F., AZZI BACCHETTA, P., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 100:(2008), pp. 121802-121802. [10.1103/physrevlett.100.121802]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/227261
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