Details

Autor(en) / Beteiligte

• Aubert, B.
• Barate, R.
• Boutigny, D.
• Couderc, F.
• Karyotakis, Y.
• Lees, J.P.
• Poireau, V.
• Tisserand, V.
• Zghiche, A.
• Grauges-Pous, E.
• Palano, A.
• Pompili, A.
• Chen, J.C.
• Qi, N.D.
• Rong, G.
• Wang, P.
• Zhu, Y.S.
• Eigen, G.
• Ofte, I.
• Stugu, B.
• Abrams, G.S.
• Borgland, A.W.
• Breon, A.B.
• Brown, D.N.
• Button-Shafer, J.
• Cahn, R.N.
• Charles, E.
• Day, C.T.
• Gill, M.S.
• Gritsan, A.V.
• Groysman, Y.
• Jacobsen, R.G.
• Kadel, R.W.
• Kadyk, J.
• Kerth, L.T.
• Kolomensky, Yu. G.
• Kukartsev, G.
• Lynch, G.
• Mir, L.M.
• Oddone, P.J.
• Orimoto, T.J.
• Pripstein, M.
• Roe, N.A.
• Ronan, M.T.
• Wenzel, W.A.
• Barrett, M.
• Ford, K.E.
• Harrison, T.J.
• Hart, A.J.
• Hawkes, C.M.
• Morgan, S.E.
• Watson, A.T.
• Fritsch, M.
• Goetzen, K.
• Held, T.
• Koch, H.
• Lewandowski, B.
• Pelizaeus, M.
• Peters, K.
• Schroeder, T.
• Steinke, M.
• Boyd, J.T.
• Burke, J.P.
• Chevalier, N.
• Cottingham, W.N.
• Kelly, M.P.
• Latham, T.E.
• Wilson, F.F.
• Cuhadar-Donszelmann, T.
• Hearty, C.
• Knecht, N.S.
• Mattison, T.S.
• Mckenna, J.A.
• Thiessen, D.
• Khan, A.
• Kyberd, P.
• Teodorescu, L.
• Blinov, A.E.
• Blinov, V.E.
• Druzhinin, V.P.
• Golubev, V.B.
• Ivanchenko, V.N.
• Kravchenko, E.A.
• Onuchin, A.P.
• Serednyakov, S.I.
• Skovpen, Yu. I.
• Solodov, E.P.
• Yushkov, A.N.
• Best, D.
• Bruinsma, M.
• Chao, M.
• Eschrich, I.
• Kirkby, D.
• Lankford, A.J.
• Mandelkern, M.
• Mommsen, R.K.
• Roethel, W.
• Stoker, D.P.
• Buchanan, C.
• Hartfiel, B.L.

Titel

Improved Measurement of the CKM Angle $\alpha$ Using $\B^0\bar{B}\to\rho^+\rho^-$ Decays

Ist Teil von

• Physical review letters, 2005, Vol.95

Ort / Verlag

American Physical Society

Erscheinungsjahr

2005

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• We present results from an analysis of B0 -> rho+rho- using 232 million Upsilon(4S) decays collected with the BABAR detector at the PEP-II asymmetric-energy $B$ Factory at SLAC. We measure the longitudinal polarization fraction f_L = 0.978 +- 0.014 (stat) +0.021 -0.029 (syst) and the CP-violating parameters SLong = -0.33 +- 0.24 (stat) +0.08 -0.14 (syst) and CLong = -0.03 +- 0.18 (stat) +- 0.09 (syst). Using an isospin analysis of B -> rho rho decays we determine the unitarity triangle alpha. The solution compatible with the Standard Model is alpha = (100 +- 13) degrees.