Details

Autor(en) / Beteiligte

• Abreu, P.
• Adam, W.
• Adye, T.
• Adzic, P.
• Albrecht, Z.
• Aldeweireld, T.
• Alekseev, G D.
• Alemany, R.
• Allmendinger, T.
• Allport, P P.
• Almehed, S.
• Amaldi, U.
• Amato, S.
• Anassontzis, E G.
• Andersson, P.
• Andringa, S.
• Antilogus, P.
• Apel, W D.
• Arnoud, Y.
• Asman, B.
• Augustin, J.-E.
• Augustinus, A.
• Baillon, P.
• Bambade, P.
• Barao, F.
• Barbiellini, Guido
• Barbier, R.
• Bardin, D Y.
• Barker, G.
• Baroncelli, A.
• Battaglia, M.
• Baubillier, M.
• Becks, K H.
• Begalli, M.
• Beilliere, P.
• Belokopytov, Yu
• Belous, K.
• Benvenuti, a C.
• Berat, C.
• Berggren, M.
• Bertini, D.
• Bertrand, D.
• Besancon, M.
• Bianchi, F.
• Bigi, M.
• Bilenky, M S.
• Bizouard, M A.
• Blom, H M.
• Bonesini, M.
• Bonivento, W.
• Boonekamp, M.
• Booth, P S L.
• Borgland, a W.
• Borisov, G.
• Bosio, C.
• Botner, O.
• Boudinov, E.
• Bouquet, B.
• Bourdarios, C.
• Bowcock, T J V.
• Boyko, I.
• Bozovic, I.
• Bozzo, M.
• Branchini, P.
• Brenke, T.
• Brenner, R A.
• Bruckman, P.
• Brunet, J M.
• Bugge, L.
• Buran, T.
• Burgsmuller, T.
• Buschmann, P.
• Cabrera, S.
• Caccia, M.
• Calvi, M.
• Camacho Rozas, a J.
• Camporesi, T.
• Canale, V.
• Carena, F.
• Carroll, L.
• Caso, C.
• Castillo Gimenez, M V.
• Cattai, A.
• Cavallo, F R.
• Chabaud, V.
• Chapkin, M.
• Charpentier, P.
• Chaussard, L.
• Checchia, P.
• Chelkov, G A.
• Chierici, R.
• Chliapnikov, P V.
• Chochula, P.
• Chorowicz, V.
• Collins, P.
• Contri, R.
• Cortina, E.
• Cosme, G.
• Cossutti, F.
• Cowell, J H.

Titel

A precise measurement of the partial decay width ratio $R_b^0 = \Gamma_{b\overline{b}}/\Gamma_{had}

Ist Teil von

• The European physical journal. C, Particles and fields, 1999, Vol.10, p.415-442

Ort / Verlag

Springer Verlag (Germany)

Erscheinungsjahr

1999

Quelle

springer (창간호~2014)

Beschreibungen/Notizen

• The partial decay width of the Z to $\bb$ quark pairs has beenmeasured by the DELPHI detector at LEP using data taken in the years1992 to 1995.Decays of b-hadrons were tagged by several methods usingtracks with large impact parameters and/or reconstructed secondary vertices, complemented by event shape variables.Combining these methods in a multivariate analysis the value\[\frac{\Gamma({\mathrm Z \rightarrow \bb}) }{ \Gamma({\mathrm {Z \rightarrow had}}) } = 0.21634 \pm 0.00067({\mathrm {stat}}) \pm 0.00060 ({\mathrm {syst}})\]was obtained, where the ${\mathrm c} \bar {\mathrm c}$ production fractionwas fixed to its Standard Model value.