000344284 001__ 344284
000344284 003__ SzGeCERN
000344284 005__ 20161219131714.0
000344284 0248_ $$aoai:cds.cern.ch:344284$$pcerncds:CERN$$pcerncds:CERN:FULLTEXT$$pcerncds:FULLTEXT
000344284 037__ $$aCERN-OPEN-98-001
000344284 041__ $$aeng
000344284 088__ $$aWU-B-97-38
000344284 100__ $$aHahn, S$$uWuppertal U.
000344284 245__ $$aNew Results on $\alpha_{s}$ from DELPHI
000344284 260__ $$c1999
000344284 269__ $$aWuppertal$$bWuppertal TU. Fachbereich Phys.$$c1 Dec 1997
000344284 300__ $$a5 p
000344284 340__ $$apaper
000344284 520__ $$aRecent studies of the strong coupling \as using the DELPHI detector at LEP \cite{pap1,pap2} are reviewed. For the analysis of the data at $ \sqrt{s} = M_Z $ recorded in 1994, a large number of shape observables and their dependence on the event orientation are measured and compared to theoretical calculations in $ { \cal O } ( \alpha_s^2 ) $ . The adjustment of the renormalization scale $ \mu $ turns out to be of major importance. Only a poor description of the data can be achieved if the so-called physical scale $ \mu^2 = Q^2 $ is applied, whereas a combined fit of $ \alpha_s $ and the renormalization scale value yields an excellent description of the high statistics data. For these scale values perfect consistency of the fit values of $ \alpha_s(M_Z) $ is obtained for all event shape observables considered. The running of $ \alpha_s $ is measured from the DELPHI data at $ \sqrt{s} $ = 130 GeV - 172 GeV. Here an analytical power ansatz for the hadronization corrections is compared with hadronization corrections obtained by using Monte Carlo generators.
000344284 65017 $$2SzGeCERN$$aParticle Physics - Experiment
000344284 690C_ $$aARTICLE
000344284 690C_ $$aCERN
000344284 693__ $$aCERN LEP$$eDELPHI
000344284 710__ $$5PPE
000344284 852__ $$cCERN Depot 4, bldg. 500-S-023 (DE4)$$hCERN-OPEN-98-001
000344284 8564_ $$uhttp://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=OPEN-98-001$$yAccess to fulltext document
000344284 8564_ $$uhttps://cds.cern.ch/record/344284/files/open-98-001.pdf$$yAccess to fulltext document
000344284 8564_ $$uhttps://cds.cern.ch/record/344284/files/open-98-001.ps.gz$$yAccess to fulltext document
000344284 916__ $$sn$$w199805$$ya2000
000344284 960__ $$a13
000344284 961__ $$c20101108$$h1207$$lCER01$$x19980129
000344284 963__ $$aPUBLIC
000344284 962__ $$b319858$$k509-512$$njerusalem970819
000344284 970__ $$a000268238CER
000344284 980__ $$aARTICLE
000344284 980__ $$aConferencePaper