Improved direct measurement of the parity-violation parameter Ab using a mass tag and momentum-weighted track charge.


Journal Article

We present an improved direct measurement of the parity-violation parameter A(b) in the Z boson-b-quark coupling using a self-calibrating track-charge technique applied to a sample enriched in Z-->bb events via the topological reconstruction of the B hadron mass. Manipulation of the Stanford Linear Collider electron-beam polarization permits the measurement of A(b) to be made independently of other Z-pole coupling parameters. From the 1996-1998 sample of 400,000 hadronic Z decays, produced with an average beam polarization of 73.4%, we find A(b)=0.906+/-0.022(stat)+/-0.023(syst).

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Cited Authors

  • Abe, K; Abe, K; Abe, T; Adam, I; Akimoto, H; Aston, D; Baird, KG; Baltay, C; Band, HR; Barklow, TL; Bauer, JM; Bellodi, G; Berger, R; Blaylock, G; Bogart, JR; Bower, GR; Brau, JE; Breidenbach, M; Bugg, WM; Burke, D; Burnett, TH; Burrows, PN; Calcaterra, A; Cassell, R; Chou, A; Cohn, HO; Coller, JA; Convery, MR; Cook, V; Cowan, RF; Crawford, G; Damerell, CJS; Daoudi, M; de Groot, N; de Sangro, R; Dong, DN; Doser, M; Dubois, R; Erofeeva, I; Eschenburg, V; Fahey, S; Falciai, D; Fernandez, JP; Flood, K; Frey, R; Hart, EL; Hasuko, K; Hertzbach, SS; Huffer, ME; Huynh, X; Iwasaki, M; Jackson, DJ; Jacques, P; Jaros, JA; Jiang, ZY; Johnson, AS; Johnson, JR; Kajikawa, R; Kalelkar, M; Kang, HJ; Kofler, RR; Kroeger, RS; Langston, M; Leith, DWG; Lia, V; Lin, C; Mancinelli, G; Manly, S; Mantovani, G; Markiewicz, TW; Maruyama, T; McKemey, AK; Messner, R; Moffeit, KC; Moore, TB; Morii, M; Muller, D; Murzin, V; Narita, S; Nauenberg, U; Neal, H; Nesom, G; Oishi, N; Onoprienko, D; Osborne, LS; Panvini, RS; Park, CH; Peruzzi, I; Piccolo, M; Piemontese, L; Plano, RJ; Prepost, R; Prescott, CY; Ratcliff, BN; Reidy, J; Reinertsen, PL; Rochester, LS; Rowson, PC; Russell, JJ; Saxton, OH; Schalk, T; Schumm, BA; Schwiening, J; Serbo, VV; Shapiro, G; Sinev, NB; Snyder, JA; Staengle, H; Stahl, A; Stamer, P; Steiner, H; Su, D; Suekane, F; Sugiyama, A; Suzuki, S; Swartz, M; Taylor, FE; Thom, J; Torrence, E; Usher, T; Va'vra, J; Verdier, R; Wagner, DL; Waite, AP; Walston, S; Weidemann, AW; Weiss, ER; Whitaker, JS; Williams, SH; Willocq, S; Wilson, RJ; Wisniewski, WJ; Wittlin, JL; Woods, M; Wright, TR; Yamamoto, RK; Yashima, J; Yellin, SJ; Young, CC; Yuta, H; SLD Collaboration,

Published Date

  • April 10, 2003

Published In

Volume / Issue

  • 90 / 14

Start / End Page

  • 141804 -

PubMed ID

  • 12731908

Pubmed Central ID

  • 12731908

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.90.141804


  • eng