Direct measurement of A(b) in Z(0) decays using charged kaon tagging

Authors
Abe, K Abe, K Abe, T Adam, I Akagi, T Allen, NJ Arodzero, A Ash, WW Aston, D Baird, KG Baltay, C Band, HR Barakat, MB Bardon, O Barklow, TL Bashindzhagyan, GL Bauer, JM Bellodi, G Ben-David, R Benvenuti, AC Bilei, GM Bisello, D Blaylock, G Bogart, JR Bolen, B Bower, GR Brau, JE Breidenbach, M Bugg, WM Burke, D Burnett, TH Burrows, PN Byrne, RM Calcaterra, A Calloway, D Camanzi, B Carpinelli, M Cassell, R Castaldi, R Castro, A Cavalli-Sforza, M Chou, A Church, E Cohn, HO Coller, JA Convery, MR Cook, V Cotton, R Cowan, RF Coyne, DG Crawford, G Damerell, CJS Danielson, MN Daoudi, M de Groot, N Dell'Orso, R Dervan, PJ de Sangro, R Dima, M D'Oliveira, A Dong, DN Doser, M Dubois, R Eisenstein, BI Eschenburg, V Etzion, E Fahey, S Falciai, D Fan, C Fernandez, JP Fero, MJ Flood, K Frey, R Gillman, T Gladding, G Gonzalez, S Goodman, ER Hart, EL Harton, JL Hasan, A Hasuko, K Hedges, SJ Hertzbach, SS Hildreth, MD Huber, J Huffer, ME Hughes, EW Huynh, X Hwang, H Iwasaki, M Jackson, DJ Jacques, P Jaros, JA Jiang, ZY Johnson, AS Johnson, JR Johnson, RA Junk, T Kajikawa, R Kalelkar, M Kamyshkov, Y Kang, HJ Karliner, I Kawahara, H Kim, YD King, R King, ME Kofler, RR Krishna, NM Kroeger, RS Langston, M Lath, A Leith, DWG Lia, V Lin, CJS Liu, X Liu, MX Loreti, M Lu, A Lynch, HL Ma, J Mahjouri, M Mancinelli, G Manley, S Mantovani, G Markiewicz, TW Maruyama, T Masuda, H Mazzucato, E McKemey, AK Meadows, BT Menegatti, G Messner, R Mockett, PM Moffeit, KC Moore, TB Morii, M Muller, D Murzin, V Nagamine, T Narita, S Nauenberg, U Neal, H Nussbaum, M Oishi, N Onoprienko, D Osborne, LS Panvini, RS Park, H Park, CH Pavel, TJ Peruzzi, I Piccolo, M Piemontese, L Pieroni, E Pitts, KT Plano, RJ Prepost, R Prescott, CY Punkar, GD Quigley, J Ratcliff, BN Reeves, TW Reidy, J Reinertsen, PL Rensing, PE Rochester, LS Rowson, PC Russell, JJ Saxton, OH Schalk, T Schindler, RH Schumm, BA Schwiening, J Sen, S Serbo, VV Shaevitz, MH Shank, JT Shapiro, G Sherden, DJ Shmakov, KD Simopoulos, C Sinev, NB Smith, SR Smy, MB Snyder, JA Staengle, H Stahl, A Stamer, P Steiner, R Steiner, H Strauss, MG Su, D Suekane, F Sugiyama, A Suzuki, S Swartz, M Szumilo, A Takahashi, T Taylor, FE Thom, J Torrence, E Toumbas, NK Usher, T Vannini, C Va'vra, J Vella, E Venuti, JP Verdier, R Verdini, PG Wagner, SR Wagner, DL Waite, AP Walston, S Wang, J Ward, C Watts, SJ Weidemann, AW Weiss, ER Whitaker, JS White, SL Wickens, FJ Williams, B Williams, DC Williams, SH Willocq, S Wilson, RJ Wisniewski, WJ Wittlin, JL Woods, M Word, GB Wright, TR Wyss, J Yamamoto, RK Yamartino, JM Yang, X Yashima, J Yellin, SJ Young, CC Yuta, H Zapalac, G Zdarko, RW Zhou, J
Citation
K. Abe et al., Direct measurement of A(b) in Z(0) decays using charged kaon tagging, PHYS REV L, 83(10), 1999, pp. 1902-1907
Citations number
23
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
10
Year of publication
1999
Pages
1902 - 1907
Database
ISI
SICI code
0031-9007(19990906)83:10<1902:DMOAIZ>2.0.ZU;2-N
Abstract
We present a direct measurement of the parity-violating asymmetry A(b) in t he Z(0) to <b(b)over bar> coupling using a new technique to distinguish the b and b quarks using charged kaons from B decays. The Z(0) bosons are prod uced in e(+)e(-) collisions at the SLC with longitudinally polarized electr ons. <b(b)over bar> events are selected using a secondary vertex mass tag a nd Ab is determined from the left-right forward-backward asymmetry. From th e 1994-1995 data sample, selected from 100 000 hadronic Z(0) decays, we obt ain A(b) = 0.855 +/- 0.088(stat) +/- 0.102(syst).