Determination of αs from jet multiplicities measured on the Z0 resonance

Adeva, B.; Адриани, О.; Aguilar-Benı́tez, M.; Akbari, H.; Alcaraz, J.; Aloisio, A.; Alverson, G.; Alviggi, M. G.; An, Q.; Anderhub, H.; Anderson, A.L.; Andreev, V.; Angelov, T.; Antonov, L.; Antreasyan, D.; Arce, P.; Arefiev, A.; Azemoon, T.; Aziz, T.; Baba, P.V.K.S.; Bagnaia, P.; Bakken, J. A.; Baksay, L.; Ball, R. C.; Banerjee, S.; Bao, J.; Barone, L.; Bay, A.; Becker, U.; Behrens, J.; Beingessner, S.; Bencze, G.; Berdugo, J.; Berges, P.; Bertucci, B.; Betev, B.L.; Biland, A.; Bizzarri, R.; Blaising, J. J.; Blömeke, P.; Blumenfeld, B.; Bobbink, G. J.; Bocciolini, M.; Böhlen, W.; Böhm, A.; Böhringer, T.; Borgia, B.; Bourilkov, D.; Bourquin, M.; Boutigny, D.; Branson, J. G.; Brock, I. C.; Bruyant, F.; Buisson, Christine; Bujak, A.; Burger, J. D.; Burq, J.P.; Busenitz, J.; Cai, X.; Camps, C.; Capell, M.; Carbonara, F.; Carminati, F.; Cartacci, A. M.; Cerrada, M.; Cesaroni, F.; Chang, Y. H.; Chaturvedi, U. 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S.; Gentile, S.; Gettner, M.; Glaubman, M.; Goldfarb, S.; Gong, Z. F.; González, E.; Gordeev, A.; Göttlicher, P.; Goujon, D.; Goy, C.; Gratta, G.; Grimes, A.; Grinnell, C.; Gruenewald, M. W.; Guanziroli, M.; Gurtu, A.; Gutay, L.; Haan, H.; Hancke, S.; Hangarter, K.; Harris, M.; Hasan, A.; He, Changda; Heavey, A.; Hebbeker, T.; Hebert, M.; Herten, G.; Herten, U.; Hervé, A.; Hilgers, K.; Hofer, H.; Hoorani, H. R.; Hsu, L.; Hu, G.; Ille, B.; Ilyas, M. M.; Innocente, V.; Isiksal, E.; Jagel, E.; Jin, B. N.; Jones, L. W.; Kaaret, P.; Khan, R. A.; Kamyshkov, Yu.; Kaplan, D. M.; Karyotakis, Y.; Kaur, M.; Khokhar, S.; Хозе, В. А.; Kirkby, D.; Kittel, W.; Klimentov, A.; König, A. C.; Kornadt, O.; Koutsenko, V.; Kraemer, R. W.; Krämer, T.; Krastev, V.R.; Krenz, W.; Krizmanic, John F.; Kuhn, A.; Kumar, Krishna; Kumar, V.; Kunin, A.; Kwan, S.; Laak, A. van; Lalieu, V.; Landi, G.; Lanius, K.; Lange, W.; Lanske, D.; Lanzano, S.; Lebrun, P.; Lecomte, P.; Lecoq, P.; Coultre, P. 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A.; Vuilleumier, Laurent; Wadhwa, M.; Walk, W.; Wallraff, W.; Wang, C.R.; Wang, G.H.; Wang, J.H.; Wang, Q.F.; Wang, X.L.; Wang, Y.F.; Wang, Z.; Wang, Z.M.; Weber, J.; Weill, R.; Wenaus, T.; Wenninger, J.; White, M. J.; Wilhelm, R.; Willmott, C.; Wittgenstein, F.; Wright, D.; Wu, Rui; Wu, S. L.; Wu, S. X.; Wu, Y.; Wysłouch, B.; Xu, Z. Z.; Xue, Z.; Yan, D.S.; Yang, B. Z.; Yang, C. G.; Yang, G.; Yang, K.S.; Yang, Qiang; Yang, Z.; Ye, Q.; Ye, C.H.; Yeh, S. C.; Yin, Z.W.; You, J. M.; Zabounidis, C.; Zaccardelli, C.; Zehnder, L.; Zeng, M.; Zeng, Y.; Zhang, D.; Zhang, D.H.; Zhang, S.Y.; Zhang, Zhezhe; Zhou, Jianfeng; Zhu, R. Y.; Zichichi, A.; Zoll, J.

doi:10.1016/0370-2693(90)90323-x

Cited by 82 publications

(15 citation statements)

References 40 publications

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“…The PYTHIA 6.421 [29] event generator is used for the baseline comparisons and corrections. It implements leading-order (LO) pQCD matrix elements for 2 → 2 processes, p T -ordered parton showers calculated in a leading-logarithmic approximation, an underlying event 3 simulation using multiple-parton interactions, and uses the Lund string model for hadronisation. For studies of systematic uncertainties, jet samples were produced using the HERWIG 6 [30] generator, which also employs LO pQCD matrix elements, but uses an angle-ordered parton shower model and a cluster hadronisation model.…”

Section: Monte Carlo Samplesmentioning

confidence: 99%

“…They have been measured at e + e − , ep, pp, and pp colliders, as well as in γp and γ γ collisions. They have provided precise measurements of the strong coupling constant, have been used to obtain information about the structure of the proton and photon, and have become important tools for understanding the strong interaction and searching for physics beyond the Standard Model (see, for example, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]). Searches for new physics using jets in 7 TeV collisions were recently published [20,21].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector

Aad¹,

Abbott²,

Abdallah³

et al. 2011

Eur. Phys. J. C

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142

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Jet cross sections have been measured for the first time in proton-proton collisions at a centre-of-mass energy of 7 TeV using the ATLAS detector. The measurement uses an integrated luminosity of 17 nb −1 recorded at the Large Hadron Collider. The anti-k t algorithm is used to identify jets, with two jet resolution parameters, R = 0.4 and 0.6. The dominant uncertainty comes from the jet energy scale, which is determined to within 7% for central jets above 60 GeV transverse momentum. Inclusive single-jet differential cross sections are presented as functions of jet transverse momentum and rapidity. Dijet cross sections are presented as functions of dijet mass and the angular variable χ. The results are compared to expectations based on next-toleading-order QCD, which agree with the data, providing a validation of the theory in a new kinematic regime.

show abstract

Section: Monte Carlo Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector

Aad¹,

Abbott²,

Abdallah³

et al. 2011

Eur. Phys. J. C

Self Cite

142

View full text Add to dashboard Cite

show abstract

“…The matrix element squared for the two quark and two gluon process (2), can be split into two gauge invariant parts as follows [25]:…”

Section: Calculationmentioning

confidence: 99%

“…Important results have been achieved. The strong coupling constant α s has been determined from jet rates and from shape variables [2] and both the flavour independence [3] and the running with √ s [4] have been verified. Three- [5] and four-jet [6] distributions have been studied and their behaviour agrees with QCD predictions calculated to second order in α s .…”

Section: Introductionmentioning

confidence: 96%

QCD effects and b -tagging at LEP I

Moretti

Tausk

1996

Zeitschrift f�r Physik C Particles and Fields

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We analyze the impact of using b-tagged samples in studying non-Abelian effects due to QCD in e + e − → 4jet events at √ s = M Z 0 , using angular variable analyses and comparisons with e + e − → 3jetγ events. We find that QCD effects are largely enhanced in b-quark samples with respect to 'unflavoured' ones, where energyordering is used to distinguish between gluon and quark jets. We show that the b-quark mass influences the angular distributions significantly and should not be neglected.

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“…We proceed by collecting various measurements spanning PETRA, PEP, TRIS-TAN, LEP 102,103,52,104,105,106,107], and in our case, SLC. These measurements represent energies Vs=22-92 GeV in ee-machines.…”

Section: Running Of Amentioning

confidence: 99%

A calorimetric measurement of the strong coupling constant in electron-positron annihilation at a center-of-mass energy of 91.6 GeV [Thesis]

Martirena¹

1994

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Determination of αs from jet multiplicities measured on the Z0 resonance

Cited by 82 publications

References 40 publications

Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector

Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector

QCD effects and b -tagging at LEP I

A calorimetric measurement of the strong coupling constant in electron-positron annihilation at a center-of-mass energy of 91.6 GeV [Thesis]

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