Studying the Underlying Event in Drell-Yan and High Transverse Momentum Jet Production at the Tevatron
Creators: name: The CDF Collaboration
name: Aaltonen, T.
name: Adelman, J.
name: Gonzalez, B. Alvarez
name: Amerio, S.
name: Amidei, D.
name: Anastassov, A.
name: Annovi, A.
name: Antos, J.
name: Apollinari, G.
name: Apresyan, A.
name: Arisawa, T.
name: Artikov, A.
name: Asaadi, J.
name: Ashmanskas, W.
name: Attal, A.
name: Aurisano, A.
name: Azfar, F.
name: Badgett, W.
name: Barbaro-Galtieri, A.
name: Barnes, V. E.
name: Barnett, B. A.
name: Barria, P.
name: Bartos, P.
name: Bauer, G.
name: Beauchemin, P. -H.
name: Bedeschi, F.
name: Beecher, D.
name: Behari, S.
name: Bellettini, G.
name: Bellinger, J.
name: Benjamin, D.
name: Beretvas, A.
name: Berge, D.
name: Bhatti, A.
name: Binkley, M.
name: Bisello, D.
name: Bizjak, I.
name: Blair, R. E.
name: Blocker, C.
name: Blumenfeld, B.
name: Bocci, A.
name: Bodek, A.
name: Boisvert, V.
name: Bortoletto, D.
name: Boudreau, J.
name: Boveia, A.
name: Brau, B.
name: Bridgeman, A.
name: Brigliadori, L.
name: Bromberg, C.
name: Brubaker, E.
name: Budagov, J.
name: Budd, H. S.
name: Budd, S.
name: Burkett, K.
name: Busetto, G.
name: Bussey, P.
name: Buzatu, A.
name: Byrum, K. L.
name: Cabrera, S.
name: Calancha, C.
name: Camarda, S.
name: Campanelli, M.
name: Campbell, M.
name: Canelli, F.
name: Canepa, A.
name: Carls, B.
name: Carlsmith, D.
name: Carosi, R.
name: Carrillon, S.
name: Carron, S.
name: Casal, B.
name: Casarsa, M.
name: Castrocc, A.
name: Catastini, P.
name: Cauz, D.
name: Cavaliere, V.
name: Cavalli-Sforza, M.
name: Cerri, A.
name: Cerrito, L.
name: Chang, S. H.
name: Chen, Y. C.
name: Chertok, M.
name: Chiarelli, G.
name: Chlachidze, G.
name: Chlebana, F.
name: Cho, K.
name: Chokheli, D.
name: Chou, J. P.
name: Chungo, K.
name: Chung, W. H.
name: Chung, Y. S.
name: Chwalek, T.
name: Ciobanu, C. I.
name: Ciocci, M. A.
name: Clark, A.
name: Clark, D.
name: Compostella, G.
name: Convery, M. E.
name: Conway, J.
name: Corbo, M.
name: Cordelli, M.
name: Cox, C. A.
name: Cox, D. J.
name: Crescioli, F.
name: Almenar, C. Cuenca
name: Cuevas, J.
name: Culbertson, R.
name: Cully, J. C.
name: Dagenhart, D.
name: Datta, M.
name: Davies, T.
name: de Barbaro, P.
name: De Cecco, S.
name: Deisher, A.
name: De Lorenzo, G.
name: Dell'Orso, M.
name: Deluca, C.
name: Demortier, L.
name: Deng, J.
name: Deninno, M.
name: d'Errico, M.
name: Di Canto, A.
name: di Giovanni, G. P.
name: Di Ruzza, B.
name: Dittmann, J. R.
name: D'Onofrio, M.
name: Donati, S.
name: Dong, P.
name: Dorigo, T.
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name: Gomez, G.
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name: Goncharov, M.
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name: Gresele, A.
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name: Group, R. C.
name: Grundler, U.
name: da Costa, J. Guimaraes
name: Gunay-Unalan, Z.
name: Haber, C.
name: Hahn, S. R.
name: Halkiadakis, E.
name: Han, B. -Y.
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name: Happacher, F.
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name: Kim, S. B.
name: Kim, S. H.
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name: Klimenko, S.
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name: Lee, E.
name: Lee, H. S.
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name: Leone, S.
name: Lewis, J. D.
name: Lin, C. -J.
name: Linacre, J.
name: Lindgren, M.
name: Lipeles, E.
name: Lister, A.
name: Litvintsev, D. O.
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Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We study the underlying event in proton-antiproton collisions by examining the behavior of charged particles (transverse momentum pT &gt; 0.5 GeV/c, pseudorapidity |η| &lt; 1) produced in association with large transverse momentum jets (~2.2 fb-1) or with Drell-Yan lepton-pairs (~2.7 fb-1) in the Z-boson mass region (70 &lt; M(pair) &lt; 110 GeV/c2) as measured by CDF at 1.96 TeV center-of-mass energy. We use the direction of the lepton-pair (in Drell-Yan production) or the leading jet (in high-pT jet production) in each event to define three regions of η-ϕspace; toward, away, and transverse, where ϕis the azimuthal scattering angle. For Drell-Yan production (excluding the leptons) both the toward and transverse regions are very sensitive to the underlying event. In high-pT jet production the transverse region is very sensitive to the underlying event and is separated into a MAX and MIN transverse region, which helps separate the hard component (initial and final-state radiation) from the beam-beam remnant and multiple parton interaction components of the scattering. The data are corrected to the particle level to remove detector effects and are then compared with several QCD Monte-Carlo models. The goal of this analysis is to provide data that can be used to test and improve the QCD Monte-Carlo models of the underlying event that are used to simulate hadron-hadron collisions.
description: Submitted to Phys.Rev.D