Jet production in ep collisions at low Q 2 and determination of αs

Aaron, F.D.; Alexa, C.; Rotaru, M.; Stoicea, G.; Andreev, V.; Belousov, A.; Eliseev, A.; Fomenko, A.; Gogitidze, N.; Lebedev, A.; Loktionova, N.; Malinovski, E.; Rusakov, S.; Shtarkov, L.N.; Soloviev, Y.; Vazdik, Y.; Antunovic, B.; Bartel, W.; Brandt, G.; Campbell, A.J.; Cholewa, A.; Deak, M.; Eckerlin, G.; Elsen, E.; Felst, R.; Fischer, D.J.; Fleischer, M.; Gayler, J.; Ghazaryan, S.; Glazov, A.; Gouzevitch, M.; Grell, B.R.; Haidt, D.; Helebrant, C.; Jung, H.; Katzy, J.; Kleinwort, C.; Knutsson, A.; Kosior, E.; Kraemer, M.; Krastev, K.; Kutak, K.; Levonian, S.; Lipka, K.; List, J.; Marti, Ll.; Meyer, A.B.; Meyer, H.; Meyer, J.; Niebuhr, C.; Nikiforov, A.; Olsson, J.E.; Panagoulias, I.; Papadopoulou, T.; Pitzl, D.; Placakyte, R.; Radescu, V.; Schmitt, S.; Sefkow, F.; Staykova, Z.; Steder, M.; Vargas Trevino, A.; Vinokurova, S.; Driesch, M. von den; Wissing, C.; Wuensch, E.; Backovic, S.; Dubak, A.; Lastovicka-Medin, G.; Picuric, I.; Raicevic, N.; Baghdasaryan, A.; Volchinski, V.; Zohrabyan, H.; Barrelet, E.; Begzsuren, K.; Ravdandorj, T.; Tseepeldorj, B.; Bizot, J.C.; Brisson, V.; Delcourt, B.; Jacquet, M.; Li, G.; Pascaud, C.; Tran, T.H.; Zhang, Z.; Zomer, F.; Boudry, V.; Moreau, F.; Specka, A.; Bozovic-Jelisavcic, I.; Mudrinic, M.; Pandurovic, M.; Smiljanic, I.; Bracinik, J.; Kenyon, I.R.; Newman, P.R.; Shaw-West, R.N.; Thompson, P.D.; Brinkmann, M.; Habib, S.; List, B.; Pokorny, B.; Toll, T.; Bruncko, D.; Cerny, V.; Ferencei, J.; Murin, P.; Tomasz, F.; Bunyatyan, A.; Buschhorn, G.; Chekelian, V.; Dossanov, A.; Grindhammer, G.; Kiesling, C.; Kogler, R.; Liptaj, A.; Raspiareza, A.; Shushkevich, S.; Bystritskaya, L.; Efremenko, V.; Fedotov, A.; Kropivnitskaya, A.; Lubimov, V.; Ozerov, D.; Petrukhin, A.; Rostovtsev, A.; Zhokin, A.; Cantun Avila, K.B.; Contreras, J.G.; Ruiz Tabasco, J.E.; Cerny, K.; Pejchal, O.; Polifka, R.; Salek, D.; Valkarova, A.; Zacek, J.; Coughlan, J.A.; Morris, J.V.; Sankey, D.P.C.; Cozzika, G.; Feltesse, J.; Perez, E.; Schoeffel, L.; Cvach, J.; Reimer, P.; Zalesak, J.; Dainton, J.B.; Gabathuler, E.; Greenshaw, T.; Klein, M.; Kluge, T.; Kretzschmar, J.; Laycock, P.; Maxfield, S.J.; Mehta, A.; Patel, G.D.; Rahmat, A.J.; Daum, K.; Meyer, H.; Delvax, J.; Wolf, E.A. de; Favart, L.; Hreus, T.; Janssen, X.; Marage, P.; Mozer, M.U.; Roland, B.; Roosen, R.; Sunar, D.; Sykora, T.; Mechelen, P. van; Diaconu, C.; Hoffmann, D.; Sauvan, E.; Trinh, T.N.; Vallee, C.; Dodonov, V.; Povh, B.; Egli, S.; Hildebrandt, M.; Horisberger, R.; Falkiewicz, A.; Goerlich, L.; Mikocki, S.; Milcewicz-Mika, I.; Nowak, G.; Sopicki, P.; Turnau, J.; Glushkov, I.; Henschel, H.; Hiller, K.H.; Kostka, P.; Lange, W.; Naumann, T.; Piec, S.; Grab, C.; Zimmermann, T.; Henderson, R.C.W.; Sloan, T.; Hennekemper, E.; Herbst, M.; Jung, A.W.; Krueger, K.; Lendermann, V.; Schultz-Coulon, H.C.; Urban, K.; Herrera, G.; Lopez-Fernandez, R.; Joensson, L.; Osman, S.; Kapichine, M.; Makankine, A.; Morozov, A.; Nikitin, D.; Palichik, V.; Spaskov, V.; Tchoulakov, V.; Landon, M.P.J.; Rizvi, E.; Thompson, G.; Traynor, D.; Martyn, H.U.; Mueller, K.; Nowak, K.; Robmann, P.; Straumann, U.; Truoel, P.; Sauter, M.; Schoening, A.; South, D.; Wegener, D.; Stella, B.; Tsakov, I.; H1 Collaboration

doi:10.1140/epjc/s10052-010-1282-x

Published May 2010 | Version v1

Journal article Metadata-only

Jet production in ep collisions at low Q 2 and determination of αs

1. National Institute for Physics and Nuclear Engineering (NIPNE), Bucharest (Romania)
2. Lebedev Physical Institute, Moscow (Russian Federation)
3. DESY, Hamburg (Germany)
4. University of Montenegro, Faculty of Science, Podgorica (Montenegro)
5. Yerevan Physics Institute, Yerevan (Armenia)
6. Universites Paris VI et VII, CNRS/IN2P3, LPNHE, Paris (France)
7. Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar (Mongolia)
8. Univ. Paris-Sud, CNRS/IN2P3, LAL, Orsay (France)
9. Ecole Polytechnique, CNRS/IN2P3, LLR, Palaiseau (France)
10. Vinca Institute of Nuclear Sciences, Belgrade (Serbia)
11. University of Birmingham, School of Physics and Astronomy, Birmingham (United Kingdom)
12. Universitaet Hamburg, Institut fuer Experimentalphysik, Hamburg (Germany)
13. Slovak Academy of Sciences, Institute of Experimental Physics, Kosice (Slovakia)
14. Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany)
15. Max-Planck-Institut fuer Physik, Muenchen (Germany)
16. Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)
17. CINVESTAV, Departamento de Fisica Aplicada, Merida, Yucatan (Mexico)
18. Charles University, Faculty of Mathematics and Physics, Praha (Czech Republic)
19. Rutherford Appleton Laboratory, Didcot (United Kingdom)
20. CE-Saclay, CEA, DSM/Irfu, Gif-sur-Yvette (France)
21. Academy of Sciences of the Czech Republic, Institute of Physics, Praha (Czech Republic)
22. University of Liverpool, Department of Physics, Liverpool (United Kingdom)
23. Universitaet Wuppertal, Fachbereich C, Wuppertal (Germany)
24. Universiteit Antwerpen, Antwerpen (Belgium)
25. Inter-University Institute for High Energies ULB-VUB, Brussels (Belgium)
26. CNRS/IN2P3 - Univ. Mediterranee, CPPM, Marseille (France)
27. Paul Scherrer Institut, Villigen (Switzerland)
28. Institute for Nuclear Physics, Cracow (Poland)
29. DESY, Zeuthen (Germany)
30. ETH, Institut fuer Teilchenphysik, Zuerich (Switzerland)
31. University of Lancaster, Department of Physics, Lancaster (United Kingdom)
32. Universitaet Heidelberg, Kirchhoff-Institut fuer Physik, Heidelberg (DE)
33. CINVESTAV, Departamento de Fisica, Mexico City (MX)
34. University of Lund, Physics Department, Lund (SE)
35. Joint Institute for Nuclear Research, Dubna (RU)
36. Queen Mary and Westfield College, London (GB)
37. I. Physikalisches Institut der RWTH, Aachen (DE)
38. Physik-Institut der Universitaet Zuerich, Zuerich (CH)
39. Universitaet Heidelberg, Physikalisches Institut, Heidelberg (DE)
40. TU Dortmund, Institut fuer Physik, Dortmund (DE)
41. INFN Roma 3, Dipartimento di Fisica, Roma (IT)
42. Universita di Roma Tre (IT)
43. Institute for Nuclear Research and Nuclear Energy, Sofia (BG)

The production of jets is studied in deep-inelastic e + p scattering at low negative four momentum transfer squared 5<Q 2<100 GeV2 and at inelasticity 0.2<y<0.7 using data recorded by the H1 detector at HERA in the years 1999 and 2000, corresponding to an integrated luminosity of 43.5 pb-1. Inclusive jet, 2-jet and 3-jet cross sections as well as the ratio of 3-jet to 2-jet cross sections are measured as a function of Q 2 and jet transverse momentum. The 2-jet cross section is also measured as a function of the proton momentum fraction ξ. The measurements are well described by perturbative quantum chromodynamics at next-to-leading order corrected for hadronisation effects and are subsequently used to extract the strong coupling αs. (orig.)

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Available from: http://dx.doi.org/10.1140/epjc/s10052-010-1282-x

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DOI: 10.1140/epjc/s10052-010-1282-x;

Journal Title: European Physical Journal. C
Journal Volume: 67
Journal Issue: 1-2
Journal Page Range: p. 1-24
ISSN: 1434-6044

Country of Publication: Germany
Country of Input or Organization: Germany
INIS RN: 41079094
Subject category: S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator: Numerical Data
Descriptors DEI: ANTILEPTON-PROTON INTERACTIONS; BRANCHING RATIO; COUPLING CONSTANTS; DEEP INELASTIC SCATTERING; DIFFERENTIAL CROSS SECTIONS; EXPERIMENTAL DATA; GEV RANGE 100-1000; HADRONS; INCLUSIVE INTERACTIONS; JET MODEL; MULTIPLE PRODUCTION; PAIR PRODUCTION; STRONG INTERACTIONS; TRANSVERSE MOMENTUM
Descriptors DEC: BASIC INTERACTIONS; CROSS SECTIONS; DATA; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; INELASTIC SCATTERING; INFORMATION; INTERACTIONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; LEPTON-PROTON INTERACTIONS; LINEAR MOMENTUM; MATHEMATICAL MODELS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; SCATTERING

Collaborations: H1 Collaboration

Jet production in ep collisions at low Q 2 and determination of αs

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Jet production in ep collisions at low Q 2 and determination of αs

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