Details

Autor(en) / Beteiligte

• Merle, E.
• Fernandez-Bosman, M.
• Miquel, R.
• Pacheco, A.
• Iaselli, G.
• Ruggieri, F.
• Ouyang, Q.
• Xie, Y.
• Xu, R.
• Zhang, J.
• Abbaneo, D.
• Buchmüller, O.
• Kado, M.
• Mato, P.
• Ranjard, F.
• Schlatter, D.
• Tejessy, W.
• Teubert, F.
• Henrard, P.
• Jousset, J.
• Podlyski, F.
• Hansen, J.R.
• Hansen, P.H.
• Nilsson, B.S.
• Markou, C.
• Brient, J.-C.
• Verderi, M.
• Focardi, E.
• Bencivenni, G.
• Mannocchi, G.
• Halley, A.W.
• Negus, P.
• O'Shea, V.
• Raine, C.
• Wasserbaech, S.
• Cavanaugh, R.
• Geweniger, C.
• Hanke, P.
• Hansper, G.
• Hepp, V.
• Sommer, J.
• Wunsch, M.
• Girone, M.
• Thompson, J.C.
• Girtler, P.
• Kuhn, D.
• Rudolph, G.
• Foster, F.
• Hughes, G.
• Robertson, N.A.
• Kleinknecht, K.
• Renk, B.
• Leroy, O.
• Talby, M.
• Ragusa, F.
• David, A.
• Lütjens, G.
• Männer, W.
• Stenzel, H.
• Wiedenmann, W.
• Wolf, G.
• Boucrot, J.
• Callot, O.
• Heusse, Ph
• Boccali, T.
• Calderini, G.
• Giammanco, A.
• Giassi, A.
• Palla, F.
• Tenchini, R.
• Venturi, A.
• Strong, J.A.
• von Wimmersperg-Toeller, J.H.
• Clifft, R.W.
• Bloch-Devaux, B.
• Colas, P.
• Kozanecki, W.
• Locci, E.
• Renardy, J.-F.
• Schuller, J.-P.
• Schwindling, J.
• Konstantinidis, N.
• Litke, A.M.
• Taylor, G.
• Cartwright, S.
• Lehto, M.
• Thompson, L.F.
• Brandt, S.
• Grupen, C.
• Ngac, A.
• Giannini, G.
• Cranmer, K.
• Elmer, P.
• Hu, H.
• McNamara, P.A.
• Orejudos, W.
• Pan, Y.B.
• Saadi, Y.
• Walsh, J.
• Wu, Sau Lan

Titel

Study of the fragmentation of b quarks into B mesons at the Z peak

Ist Teil von

• Physics letters. B, 2001-07, Vol.512 (1), p.30-48

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2001

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• The fragmentation of b quarks into B mesons is studied with four million hadronic Z decays collected by the ALEPH experiment during the years 1991–1995. A semi-exclusive reconstruction of B→ℓ νD (★) decays is performed, by combining lepton candidates with fully reconstructed D (★) mesons while the neutrino energy is estimated from the missing energy of the event. The mean value of x B wd, the energy of the weakly-decaying B meson normalised to the beam energy, is found to be 〈x B wd 〉=0.716±0.006 ( stat)±0.006 ( syst), using a model-independent method; the corresponding value for the energy of the leading B meson is 〈x B L 〉=0.736±0.006 ( stat)±0.006 ( syst) . The reconstructed spectra are compared with different fragmentation models.