Abstract
We present a study of jet multiplicities based on 37 000 hadronic Z0 boson decays. From this data we determine the strong coupling constant αs=0.115±0.005 (exp.)-0.010+0.012 (theor.) to second order QCD at √s=91.22GeV.
| Original language | English |
|---|---|
| Pages (from-to) | 464-472 |
| Number of pages | 9 |
| Journal | Physics Letters B |
| Volume | 248 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - 4 Oct 1990 |
| Externally published | Yes |
Funding
P.K. Malhotra o, R. Malik g, A. Malinin m, C. Mafia a, c, D.N. Mao n, Y.F. Mao ;, M. Maolinbay n, p. Marchesini g, A. Marchionni b, j.p. Martin ~, L. Martinez c, F. Marzano P, G.G.G. Massaro w, T. Matsuda i, K. Mazumdar °, P. McBride ", T. McMahon r, D. McNally n, Th. Meinholz v, M. Merk w, L. Merola e, M. Meschini b, W.J. Metzger w, y. Mi *, M. Micke v, U. Micke v, G.B. Mills n, y. Mir g, G. Mirabelli o, j. Mnich v, M. M611er v, L. Montanet a, B. Monteleoni b, G. Morand s, R. Morand t, S. Morganti P, V. Morgunov m, R. Mount ~, E. Nagy "" a, M. Napolitano c, H. Newman ~, M.A. Niaz g, L. Niessen v, W.D. Nowak 0, H. Nowak 0, S. Nowak 0, D. Pandoulas v, G. Paternoster e, S. Patricelli e, y.j. Pei v, D. Perret-Gallix t, j. Perrier s, A. Pevsner d, M. Pieri b, P.A. Pirou6 q, V. Plyaskin m, M. Pohl h, V. Pojidaev m, N. Produit ~, J.M. Qian i, g, K.N. Qureshi g, R. Raghavan o, G. Rahal-Callot h, P. Razis n, K. Read q, D. Ren h, Z. Ren *, S. Reucroft r, A. Ricker *, T. Riemann 0, C. Rippich ~, H.A. Rizvi g, B.P. Roe n, M. R6hner v, S. R6hner v, Th. Rombach ~, L. Romero ¢, J. Rose v, S. Rosier-Lees t, R. Rosmalen w, Ph. Rosselet Y, J.A. Rubio a, c, W. Ruckstuhl ~, H. Rykaczewski h, M. Sachwitz 0, j. Salicio c, J.M. Salicio c, G. Sartorelli ~' *, G. Sauvage t, A. Savin m, V. Schegelsky J, D. Schmitz ~, P. Schmitz v, M. Schneegans t, M. Sch6ntag v, H. Schopper ~, D.J. Schotanus w, H.J. Schreiber o, R. Schulte v, S. Schulte v, K. Schultze ~, J. Schfitte r,, j. Schwenke v, G. Schwering v, C. Sciacca e, R. Sehgal g, P.G. Seiler ", J.C. Sens w, I. Sheer z, V. Shevchenko m, S. Shevchenko m, X.R. Shi ~, K. Shmakov m, V. Shoutko m, E. Shumilov m, N. Smirnov J, A. Sopczak ~' z, C. Souyri t, Co Spartiotis d, T. Spickermann v, B. Spiess x, p. Spillantini b, R. Starosta v, M. Steuer ~' i, D.P. Stickland q, B. St6hr ", H. Stone *, K. Strauch ", B.C. Stringfellow r, K. Sudhakar o, v, G. Sultanov a, R.L. Sumner q, H. Suter h, R.B. Sutton ~, J.D. Swain g, A.A. Syed g, X.W. Tang ;, E. Tarkovsky ~, J.M. Thenard t, E. Thomas g, C. Timmermans w, Samuel C.C. Ting ~, S.M. Ting i, y.p. Tong ~, F. Tonisch 0, M. Tonutti ~, S.C. Tonwar o, j. Tbth ~, G. Trowitzsch 0, K.L. Tung ;, J. Ulbricht x, L. UrbAn ~, U. Uwer v, E. Valente P, R.T. Van de Walle w, H. van der Graaf w, I. Vetlitsky m, G. Viertel h, P. Vikas g, U. Vikas g, M. Vivargent t, i, H. Vogel *, H. Vogt 0, M. Vollmar v, G.Von Dardel ~, I. Vorobiev ,n, A.A. Vorobyov J, An.A. Vorobyov J, L. Vuilleumier Y, M. Wadhwa g, W. Walk a, W. Wallraff v, C.R. Wang n, G.H. Wang ~, J.H. Wang ;, Q.F. Wang ", X.L. Wang ~, Y.F. Wang b, Z. Wang g, Z.M. Wang g' n, J. Weber h, R. Weill Y, T.J. Wenaus ~, J. Wenninger ~, M. White i R. Wilhelm w, C. Willmott c, F. Wittgenstein ~, D. Wright q, R.J. Wu ;, S.L. Wu g, S.X. Wu 'g, Y.G. Wu ;, B. Wystouch ~, ~, Z.Z. Xu n, Z.L. Xue x, D.S. Yan ~, B.Z. Yang n, C.G. Yang ~, G. Yang g, K.S. Yang ;, Q.Y. Yang ;, Z.Q. Yang x, Q. Ye g, C.H. Ye g, S.C. Yeh ~, Z.W. Yin ~, J.M. You g, C. Zabounidis f, C. Zaccardelli ~, L. Zehnder ", M. Zeng g, Y. Zeng v, D. Zhang ~, D.H. Zhang w, S.Y. Zhang ;, Z.P. Zhang n, J.F. Zhou ~, R.Y. Zhu ~, A. Zichichi a, g and J. Zoll ~ European Laboratory for Particle Physics, CERN, CH-1211 Geneva 23, Switzerland b INFN-Sezione di Firenze and University of Firenze, 1-50125 Florence, Italy Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas, CIEMAT, E-28040 Madrid, Spain d Johns Hopkins University, Baltimore, MD 2121& USA 1NFN-Sezione di Napoli and University of Naples, 1-80125 Naples, Italy f Northeastern University, Boston, MA 02115, USA g World Laboratory, FBLJA Project, CH-1211 Geneva, Switzerland n Eidgeni~ssische Technische Hochschule, ETH Ziirich, CH-8093 Zurich, Switzerland Massachusetts Institute of Technology, Cambridge, MA 02139. USA J LeningradNuclearPhysicslnstitute, SU-188350Gatchina, USSR k CentralLaboratory ofAutomation andlnstrumentation, CLANP, Sofia, Bulgaria 1NFN-Sezione di Bologna, 1-40126 Bologna, Italy m Institute of Theoretical and Experimental Physics, ITEP, SU-117 259 Moscow, USSR University of Michigan, Ann Arbor, MI 48109, USA ° Tata Institute of Fundamental Research, Bombay 400 005, India P INFN-Sezione di Roma and University of Rome "La Sapienza", 1-00185 Rome, Italy We wish to thank CERN for its hospitality and help. We want particularly to express our gratitude to the LEP division: it is their excellent achievements which made this experiment possible. We acknowledge the effort of all engineers and technicians who have participated in the construction and maintenance of this experiment. We are grateful to B. Lampe and P. Nason for useful discussions. We acknowledge the support of all the funding agencies which contributed to this experiment.