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Direct measurements of Ab and Ac using vertex and kaon charge tags at the SLAC detector.

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 CJ
Daoudi M
Dasu S
de Groot N
de Sangro R
Dong DN
Doser M
Dubois R
Erofeeva I
Eschenburg V
Etzion E
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 DW
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 A
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
Source :
Physical review letters [Phys Rev Lett] 2005 Mar 11; Vol. 94 (9), pp. 091801. Date of Electronic Publication: 2005 Mar 07.
Publication Year :
2005

Abstract

Exploiting the manipulation of the SLAC Linear Collider electron-beam polarization, we present precise direct measurements of the parity-violation parameters A(c) and A(b) in the Z-boson-c-quark and Z-boson-b-quark coupling. Quark-antiquark discrimination is accomplished via a unique algorithm that takes advantage of the precise SLAC Large Detector charge coupled device vertex detector, employing the net charge of displaced vertices as well as the charge of kaons that emanate from those vertices. From the 1996-1998 sample of 400 000 Z decays, produced with an average beam polarization of 73.4%, we find A(c)=0.673+/-0.029(stat)+/-0.023(syst) and A(b)=0.919+/-0.018(stat)+/-0.017(syst).

Details

Language :
English
ISSN :
0031-9007
Volume :
94
Issue :
9
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
15783953
Full Text :
https://doi.org/10.1103/PhysRevLett.94.091801