QCD results from studies of hadronic events produced in e+e- annihilations at √s = 183 GeV

被引：47

作者：

Acciarri, M

Adriani, O

Aguilar-Benitez, M

Ahlen, S

Alcaraz, J

Alemanni, G

Allaby, J

Aloisio, A

Alviggi, MG

Ambrosi, G

Anderhub, H

Andreev, VP

Angelescu, T

Anselmo, F

Arefiev, A

Azemoon, T

Aziz, T

Bagnaia, P

Baksay, L

Banerjee, S

Banicz, K

Barczyk, A

Barillère, R

Barone, L

Bartalini, P

Baschirotto, A

Basile, M

Battiston, R

Bay, A

Becattini, F

Becker, U

Behner, F

Berdugo, J

Berges, P

Bertucci, B

Betev, BL

Bhattacharya, S

Biasini, M

Biland, A

Bilei, GM

Blaising, JJ

Blyth, SC

Bobbink, GJ

Bock, R

Böhm, A

Boldizsar, L

Borgia, B

Bourilkov, D

Bourquin, M

机构：

[1] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[2] Rhein Westfal TH Aachen, Inst Phys 1, D-52056 Aachen, Germany

[3] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany

[4] NIKHEF H, Natl Inst High Energy Phys, NL-1009 DB Amsterdam, Netherlands

[5] Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands

[6] Univ Michigan, Ann Arbor, MI 48109 USA

[7] CNRS, IN2P3, LAPP, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France

[8] Johns Hopkins Univ, Baltimore, MD 21218 USA

[9] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland

[10] Louisiana State Univ, Baton Rouge, LA 70803 USA

[11] Inst High Energy Phys, Beijing 100039, Peoples R China

[12] Humboldt Univ, D-10099 Berlin, Germany

[13] Univ Bologna, I-40126 Bologna, Italy

[14] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy

[15] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[16] Boston Univ, Boston, MA 02215 USA

[17] Northeastern Univ, Boston, MA 02115 USA

[18] Inst Atom Phys, R-76900 Bucharest, Romania

[19] Univ Bucharest, R-76900 Bucharest, Romania

[20] Hungarian Acad Sci, Cent Res Inst Phys, H-1525 Budapest 114, Hungary

[21] MIT, Cambridge, MA 02139 USA

[22] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy

[23] Univ Florence, I-50125 Florence, Italy

[24] CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland

[25] World Lab, FBLJA Project, CH-1211 Geneva 23, Switzerland

[26] Univ Geneva, CH-1211 Geneva 4, Switzerland

[27] Chinese Univ Sci & Technol, USTC, Hefei 230029, Anhui, Peoples R China

[28] Res Inst High Energy Phys, SEFT, SF-00014 Helsinki, Finland

[29] Univ Lausanne, CH-1015 Lausanne, Switzerland

[30] Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy

[31] Univ Lecce, I-73100 Lecce, Italy

[32] Los Alamos Natl Lab, Los Alamos, NM 87544 USA

[33] Univ Lyon 1, Inst Phys Nucl Lyon, IN2P3, CNRS, F-69622 Villeurbanne, France

[34] CIEMAT, Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain

[35] ITEP, Inst Theoret & Expt Phys, Moscow, Russia

[36] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy

[37] Univ Naples Federico II, I-80125 Naples, Italy

[38] Univ Cyprus, Dept Nat Sci, Nicosia, Cyprus

[39] Catholic Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands

[40] Natl Inst Nucl Phys & High Energy Phys, NL-6525 ED Nijmegen, Netherlands

[41] CALTECH, Pasadena, CA 91125 USA

[42] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy

[43] Univ Perugia, I-06100 Perugia, Italy

[44] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[45] Princeton Univ, Princeton, NJ 08544 USA

[46] Univ Roma La Sapienza, I-00185 Rome, Italy

[47] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy

[48] Inst Phys Nucl, St Petersburg, Russia

[49] Univ Salerno, I-84100 Salerno, Italy

[50] Ist Nazl Fis Nucl, I-84100 Salerno, Italy

来源：

PHYSICS LETTERS B | 1998年 / 444卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(98)01404-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results obtained from a study of the structure of hadronic events recorded by the L3 detector at a centre-of-mass energy of 183 GeV. The data sample corresponds to an integrated luminosity of 55.3 pb(-1). The distributions of event shape variables and the energy dependence of their mean values are measured. From a comparison with resummed O(alpha(s)(2)) QCD calculations, we determine the strong coupling constant alpha(s) (183 GeV) = 0.1086 +/- 0.0026(exp) +/- 0.0054(th). The charged particle multiplicity distribution and momentum spectrum are studied and the energy dependence of the peak position of the xi(= - ln x(p)) distribution is compared with lower energy measurements and QCD expectations. (C) 1998 Elsevier Science B.V.

引用

页码：569 / 582

页数：14

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