A Search for Jet Handedness in Hadronic 2° Decays
ثبت نشده
چکیده
We have searched for signatures of pohization in hadronic jets from 2° + g~ decays using the ‘~et handedness’ method. The charge azymmetry induced by the high SLC dectron beam polarization was used to sdect quark or antiquarkjets, qected to be leftand right-pokized, respectively. We find no evidence for jet handednessin ow global sample nor in a sample of tight quwk jets. We set upper ~ts of 5.l% and 9.170respectively on the magnitude of the analyzingpower of this techniqueat the 95% C.L. We have studied severalalternativedetitions of jet handednessand fid no signalby any method. -. Presented at the 27th Intemationd Conference on Wgh Energy Physics (I=P), Glasgow, Scotland, July 20-27, 1994 * Work supportedby the Dtputmtnt of Energy antruk DEFGO>91ER40676 (BU), DEFGO& 92ER40701 (CIT), DEFGO&91ER40618 (UCSB), D~FGO&92ER40689 (UCSC), DBFGO$93ER40788 (CSU), DEFGO>91ER40672 (@rsdo), D&FGO>91ER40677 @ois), DBACO&76SFOO098(LBL), DEFGO>92ER40715 (Msssuhusttts), D&ACO>76ER03069 (MIT), DBFGO&85ER40224 (Oregon), DEACO&76SFOW15 (SLAC), DBFGO&91ER40627 (Ttrm~), D&ACO%76ERO0881 (WtiMn), DEFGO>92ER40704 ~dt); Nstiond =ntt Foundation grw~ PHY-91-13428 (UCSC), PHY-8% 21320(~umbk), PHY4>~39 (-bati), PHY-8&17930 (Rutgers), PHY-8$19316 (Vszderbflt), PHY-9%03212 (W-n); the UK M=d E~tsriw Reteu~ Coun~ (Brund ad ML); the btituto Nssion& di fia Nu& of It~ (-a, Ferrua, ~~ati, Pisa, Psdo~, Perugia); md the Ja~-US Cooperative RestA Projd on High Energy Physi(N~oya, Tohoku).
منابع مشابه
A Search for Jet Handedness in Hadronic 2 ° Decayst
We have searched for signatures of polarization in hadronic jets from 2° ~ q~ decays using the 'jet handedness' method. The charge asymmetry induced by the high SLC electron beam polarization was used to select quark or antiquark jets, expected to be left-and right-polarized, respectively. Rom our preliminary study, we find no evidence for jet handedness in our global sample nor in a sample of ...
متن کاملA Search for Jet Handedness in Hadronic 2’ Decays
Transport of polarization through hadronization process is one of the fundamental interest in Quantum Chromodynamics which is a theory of strong interactions. In the low energy region where the hadronization occurs, QCD calculations are difficult, therefore at present the transport can be investigated experimentally. In this study we have searched for signatures of polarization of quarks and an...
متن کاملTests of QCD with Polarized Electrons ∗
We present three measurements that exploit the highly-polarized incident electrons of the SLC facility to probe QCD and the hadronization process. We observe preliminary evidence for leading particle production in hadronic decays of the Z0 to light-quark pairs. In a high-purity sample of quark jets, the momentum spectra of p, Λ0, and K− are harder than those of p̄, Λ̄0, and K+, supporting the hyp...
متن کاملEffective Hamiltonian of Electroweak Penguin for Hadronic b Quark Decays
In this research we work with the effective Hamiltonian and the quark model. We investigate the decay rates of matter-antimatter of quark. We describe the effective Hamiltonian theory and apply this theory to the calculation of current-current ( ), QCD penguin ( ), magnetic dipole ( ) and electroweak penguin ( ) decay rates. The gluonic penguin structure of hadronic decays is studied thro...
متن کامل