Electroweak coupling measurements from polarized Bhabha scattering at SLD
Conference
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OSTI ID:10194535
- Oregon Univ., Eugene, OR (United States). Dept. of Physics
The cross section for Bhabah scattering (e{sup +}e{sup {minus}} {yields} e{sup +}e{sup {minus}}) with polarized electrons at the center of mass energy of the Z{sup 0} resonance has been measured with the SLD experiment at the SLAC Linear Collider (SLC) during the 1992--1993 runs. The first measurement of the left-right asymmetry in Bhabah scattering (A{sub LR}{sup e+}e{sup {minus}} ({theta})) is presented. From A{sub LR}{sup e+}{sup {minus}} ({Theta}) the effective weak mixing angle is measured to be sin{sup 2}{theta}{sub W}{sup eff} = 0.2245{plus_minus}0.0010. When combined with the measurement of A{sub LR}, the effective electron couplings are measured to be v{sub e} = {minus}0.0414{plus_minus}0.0020 and a{sub e} = {minus}0.4977{plus_minus}0.0045.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States); Science and Engineering Research Council, Swindon (United Kingdom); Istituto Nazionale di Fisica Nucleare, Rome (Italy); US-Japan High Energy Physics Collaboration; National Research Council of Canada, Ottawa, ON (Canada)
- DOE Contract Number:
- FG02-91ER40676; FG03-92ER40701; FG03-91ER40618; FG02-91ER40672; FG02-91ER40677; FG02-91ER40661; AC03-76SF00098; FG02-92ER40715; AC02-76ER03069; FG06-85ER40224; AC03-76SF00515; FG05-91ER40627; AC02-76ER00881; FG02-92ER40704
- OSTI ID:
- 10194535
- Report Number(s):
- SLAC-PUB--6699; CONF-9409103--5; ON: DE95003137; IN: OREXP-94-6; BR: 35KA02000/35KS01000; 35KA02000/35KS01000; 35KA02000/KA0101000; 35KA02000/35KS01000; 35KA02000/35KS01000; 35KA02000/35KS01000; KA0101000; 35AB01000/35HK02010; 35KA02000/35KS01000; 35KA02000/35KS01000
- Country of Publication:
- United States
- Language:
- English
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