We present a measurement of the time-dependent CP asymmetry for the neutral B-meson decay B-0-->phiK(0). We use a sample of approximately 114x10(6) B-meson pairs taken at the Y(4S) resonance with the BABAR detector at the PEP-II B-meson factory at SLAC. We reconstruct the CP eigenstates phiK(S)(0) and phiK(L)(0), where phi-->K+K-, K-S(0)-->pi(+)pi(-), and K-L(0) is observed via its hadronic interactions. The other B meson in the event is tagged as either a B-0 or (B) over bar (0) from its decay products. The values of the CP-violation parameters are S-phiK=0.47+/-0.34(stat)(-0.06)(+0.08)(syst) and C-phiK=0.01+/-0.33(stat)+/-0.10(syst).

Measurement of the time-dependent CP asymmetry in the B-0 ->phi K-0 decay / Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J.m., Hicheur, A., Karyotakis, Y., Lees, J.p., Tisserand, V., Zghiche, A., Palano, A., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., Stugu, B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 93:(2004), pp. 071801-1-071801-7. [10.1103/PhysRevLett.93.071801]

Measurement of the time-dependent CP asymmetry in the B-0 ->phi K-0 decay

DEL RE, Daniele;RAHATLOU, SHAHRAM;SARTI, ALESSIO;BELLINI, Fabio;CAVOTO, Gianluca;FACCINI, Riccardo;FERRONI, Fernando;GASPERO, Mario;VOENA C;
2004

Abstract

We present a measurement of the time-dependent CP asymmetry for the neutral B-meson decay B-0-->phiK(0). We use a sample of approximately 114x10(6) B-meson pairs taken at the Y(4S) resonance with the BABAR detector at the PEP-II B-meson factory at SLAC. We reconstruct the CP eigenstates phiK(S)(0) and phiK(L)(0), where phi-->K+K-, K-S(0)-->pi(+)pi(-), and K-L(0) is observed via its hadronic interactions. The other B meson in the event is tagged as either a B-0 or (B) over bar (0) from its decay products. The values of the CP-violation parameters are S-phiK=0.47+/-0.34(stat)(-0.06)(+0.08)(syst) and C-phiK=0.01+/-0.33(stat)+/-0.10(syst).
2004
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the time-dependent CP asymmetry in the B-0 ->phi K-0 decay / Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J.m., Hicheur, A., Karyotakis, Y., Lees, J.p., Tisserand, V., Zghiche, A., Palano, A., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., Stugu, B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 93:(2004), pp. 071801-1-071801-7. [10.1103/PhysRevLett.93.071801]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/231129
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