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Measurement of the azimuthal angle distribution of leptons from $W$ boson decays as a function of the $W$ transverse momentum in $p \bar{p}$ collisions at $\sqrt{s} = 1.8 TeV$

D. Acosta¹⁴, T. Affolder⁷, M. G. Albrow¹³, D. Ambrose³⁶, D. Amidei²⁷, K. Anikeev²⁶, J. Antos¹, G. Apollinari¹³, T. Arisawa⁵⁰ et al.

A. Artikov¹¹, W. Ashmanskas², F. Azfar³⁴, P. Azzi-Bacchetta³⁵, N. Bacchetta³⁵, H. Bachacou²⁴, W. Badgett¹³, A. Barbaro-Galtieri²⁴, V. E. Barnes³⁹, B. A. Barnett²¹, S. Baroiant⁵, M. Barone¹⁵, G. Bauer²⁶, F. Bedeschi³⁷, S. Behari²¹, S. Belforte⁴⁷, W. H. Bell¹⁷, G. Bellettini³⁷, J. Bellinger⁵¹, D. Benjamin¹², A. Beretvas¹³, A. Bhatti⁴¹, M. Binkley¹³, D. Bisello³⁵, M. Bishai¹³, R. E. Blair², C. Blocker⁴, K. Bloom²⁷, B. Blumenfeld²¹, A. Bocci⁴¹, A. Bodek⁴⁰, G. Bolla³⁹, A. Bolshov²⁶, D. Bortoletto³⁹, J. Boudreau³⁸, C. Bromberg²⁸, E. Brubaker²⁴, J. Budagov¹¹, H. S. Budd⁴⁰, K. Burkett¹³, G. Busetto³⁵, K. L. Byrum², S. Cabrera¹², M. Campbell²⁷, W. Carithers²⁴, D. Carlsmith⁵¹, A. Castro³, D. Cauz⁴⁷, A. Cerri²⁴, L. Cerrito²⁰, J. Chapman²⁷, C. Chen³⁶, Y. C. Chen¹, M. Chertok⁵, G. Chiarelli³⁷, G. Chlachidze¹³, F. Chlebana¹³, M. L. Chu¹, J. Y. Chung³², W.-H. Chung⁵¹, Y. S. Chung⁴⁰, C. I. Ciobanu²⁰, A. G. Clark¹⁶, M. Coca⁴⁰, A. Connolly²⁴, M. Convery⁴¹, J. Conway⁴³, M. Cordelli¹⁵, J. Cranshaw⁴⁵, R. Culbertson¹³, D. Dagenhart⁴, S. D’Auria¹⁷, P. de Barbaro⁴⁰, S. De Cecco⁴², S. Dell’Agnello¹⁵, M. Dell’Orso³⁷, S. Demers⁴⁰, L. Demortier⁴¹, M. Deninno³, D. De Pedis⁴², P. F. Derwent¹³, C. Dionisi⁴², J. R. Dittmann¹³, A. Dominguez²⁴, S. Donati³⁷, M. D’Onofrio¹⁶, T. Dorigo³⁵, N. Eddy²⁰, R. Erbacher¹³, D. Errede²⁰, S. Errede²⁰, R. Eusebi⁴⁰, S. Farrington¹⁷, R. G. Feild⁵², J. P. Fernandez³⁹, C. Ferretti²⁷, R. D. Field¹⁴, I. Fiori³⁷, B. Flaugher¹³, L. R. Flores-Castillo³⁸, G. W. Foster¹³, M. Franklin¹⁸, J. Friedman²⁶, I. Furic²⁶, M. Gallinaro⁴¹, M. Garcia-Sciveres²⁴, A. F. Garfinkel³⁹, C. Gay⁵², D. W. Gerdes²⁷, E. Gerstein⁹, S. Giagu⁴², P. Giannetti³⁷, K. Giolo³⁹, M. Giordani⁴⁷, P. Giromini¹⁵, V. Glagolev¹¹, D. Glenzinski¹³, M. Gold³⁰, N. Goldschmidt²⁷, J. Goldstein³⁴, G. Gomez⁸, M. Goncharov⁴⁴, I. Gorelov³⁰, A. T. Goshaw¹², Y. Gotra³⁸, K. Goulianos⁴¹, A. Gresele³, C. Grosso-Pilcher¹⁰, M. Guenther³⁹, J. Guimaraes da Costa¹⁸, C. Haber²⁴, S. R. Hahn¹³, E. Halkiadakis⁴⁰, R. Handler⁵¹, F. Happacher¹⁵, K. Hara⁴⁸, R. M. Harris¹³, F. Hartmann²², K. Hatakeyama⁴¹, J. Hauser⁶, J. Heinrich³⁶, M. Hennecke²², M. Herndon²¹, C. Hill⁷, A. Hocker⁴⁰, K. D. Hoffman¹⁰, S. Hou¹, B. T. Huffman³⁴, R. Hughes³², J. Huston²⁸, J. Incandela⁷, G. Introzzi³⁷, M. Iori⁴², C. Issever⁷, A. Ivanov⁴⁰, Y. Iwata¹⁹, B. Iyutin²⁶, E. James¹³, M. Jones³⁹, T. Kamon⁴⁴, J. Kang²⁷, M. Karagoz Unel³¹, S. Kartal¹³, H. Kasha⁵², Y. Kato³³, R. D. Kennedy¹³, R. Kephart¹³, B. Kilminster⁴⁰, D. H. Kim²³, H. S. Kim²⁰, M. J. Kim⁹, S. B. Kim²³, S. H. Kim⁴⁸, T. H. Kim²⁶, Y. K. Kim¹⁰, M. Kirby¹², L. Kirsch⁴, S. Klimenko¹⁴, P. Koehn³², K. Kondo⁵⁰, J. Konigsberg¹⁴, A. Korn²⁶, A. Korytov¹⁴, J. Kroll³⁶, M. Kruse¹², V. Krutelyov⁴⁴, S. E. Kuhlmann², N. Kuznetsova¹³, A. T. Laasanen³⁹, S. Lami⁴¹, S. Lammel¹³, J. Lancaster¹², M. Lancaster²⁵, R. Lander⁵, K. Lannon³², A. Lath⁴³, G. Latino³⁰, T. LeCompte², Y. Le²¹, J. Lee⁴⁰, S. W. Lee⁴⁴, N. Leonardo²⁶, S. Leone³⁷, J. D. Lewis¹³, K. Li⁵², C. S. Lin¹³, M. Lindgren⁶, T. M. Liss²⁰, D. O. Litvintsev³⁰, T. Liu¹³, N. S. Lockyer³⁶, A. Loginov²⁹, M. Loreti³⁵, D. Lucchesi³⁵, P. Lukens¹³, L. Lyons³⁴, J. Lys²⁴, R. Madrak¹⁸, K. Maeshima¹³, P. Maksimovic²¹, L. Malferrari³, M. Mangano³⁷, G. Manca³⁴, M. Mariotti³⁵, M. Martin²¹, A. Martin⁵², V. Martin³¹, M. Martínez¹³, P. Mazzanti³, K. S. McFarland⁴⁰, P. McIntyre⁴⁴, M. Menguzzato³⁵, A. Menzione³⁷, P. Merkel¹³, C. Mesropian⁴¹, A. Meyer¹³, T. Miao¹³, J. S. Miller²⁷, R. Miller²⁸, S. Miscetti¹⁵, G. Mitselmakher¹⁴, N. Moggi³, R. Moore¹³, T. Moulik³⁹, A. Mukherjee¹³, M. Mulhearn²⁶, T. Muller²², A. Munar³⁶, P. Murat¹³, J. Nachtman¹³, S. Nahn⁵², I. Nakano¹⁹, R. Napora²¹, C. Nelson¹³, T. Nelson¹³, C. Neu³², M. S. Neubauer²⁶, C. Newman-Holmes¹³, F. Niell²⁷, T. Nigmanov³⁸, L. Nodulman², S. H. Oh¹², Y. D. Oh²³, T. Ohsugi¹⁹, T. Okusawa³³, W. Orejudos²⁴, C. Pagliarone³⁷, F. Palmonari³⁷, R. Paoletti³⁷, V. Papadimitriou⁴⁵, J. Patrick¹³, G. Pauletta⁴⁷, M. Paulini⁹, T. Pauly³⁴, C. Paus²⁶, D. Pellett⁵, A. Penzo⁴⁷, T. J. Phillips¹², G. Piacentino³⁷, J. Piedra⁸, K. T. Pitts²⁰, A. Pompoš³⁹, L. Pondrom⁵¹, G. Pope³⁸, O. Poukov¹¹, T. Pratt³⁴, F. Prokoshin¹¹, J. Proudfoot², F. Ptohos¹⁵, G. Punzi³⁷, J. Rademacker³⁴, A. Rakitine²⁶, F. Ratnikov⁴³, H. Ray²⁷, A. Reichold³⁴, P. Renton³⁴, M. Rescigno⁴², F. Rimondi³, L. Ristori³⁷, W. J. Robertson¹², T. Rodrigo⁸, S. Rolli⁴⁹, L. Rosenson²⁶, R. Roser¹³, R. Rossin³⁵, C. Rott³⁹, A. Roy³⁹, A. Ruiz⁸, D. Ryan⁴⁹, A. Safonov⁵, R. St. Denis¹⁷, W. K. Sakumoto⁴⁰, D. Saltzberg⁶, C. Sanchez³², A. Sansoni¹⁵, L. Santi⁴⁷, S. Sarkar⁴², P. Savard⁴⁶, A. Savoy-Navarro¹³, P. Schlabach¹³, E. E. Schmidt¹³, M. P. Schmidt⁵², M. Schmitt³¹, L. Scodellaro³⁵, A. Scribano³⁷, A. Sedov³⁹, S. Seidel³⁰, Y. Seiya⁴⁸, A. Semenov¹¹, F. Semeria³, M. D. Shapiro²⁴, P. F. Shepard³⁸, T. Shibayama⁴⁸, M. Shimojima⁴⁸, M. Shochet¹⁰, A. Sidoti³⁵, A. Sill⁴⁵, P. Sinervo⁴⁶, A. J. Slaughter⁵², K. Sliwa⁴⁹, F. D. Snider¹³, R. Snihur²⁵, M. Spezziga⁴⁵, L. Spiegel¹³, F. Spinella³⁷, M. Spiropulu⁷, A. Stefanini³⁷, J. Strologas³⁰, D. Stuart⁷, A. Sukhanov¹⁴, K. Sumorok²⁶, T. Suzuki⁴⁸, R. Takashima¹⁹, K. Takikawa⁴⁸, M. Tanaka², M. Tecchio²⁷, P. K. Teng¹, K. Terashi⁴¹, R. J. Tesarek¹³, S. Tether²⁶, J. Thom¹³, A. S. Thompson¹⁷, E. Thomson³², P. Tipton⁴⁰, S. Tkaczyk¹³, D. Toback⁴⁴, K. Tollefson²⁸, D. Tonelli³⁷, M. Tönnesmann²⁸, H. Toyoda³³, W. Trischuk⁴⁶, J. Tseng²⁶, D. Tsybychev¹⁴, N. Turini³⁷, F. Ukegawa⁴⁸, T. Unverhau¹⁷, T. Vaiciulis⁴⁰, A. Varganov²⁷, E. Vataga³⁷, S. Vejcik¹³, G. Velev¹³, G. Veramendi²⁴, R. Vidal¹³, I. Vila⁸, R. Vilar⁸, I. Volobouev²⁴, M. von der Mey⁶, R. G. Wagner², R. L. Wagner¹³, W. Wagner²², Z. Wan⁴³, C. Wang¹², M. J. Wang¹, S. M. Wang¹⁴, B. Ward¹⁷, S. Waschke¹⁷, D. Waters²⁵, T. Watts⁴³, M. Weber²⁴, W. C. Wester¹³, B. Whitehouse⁴⁹, A. B. Wicklund², E. Wicklund¹³, H. H. Williams³⁶, P. Wilson¹³, B. L. Winer³², S. Wolbers¹³, M. Wolter⁴⁹, S. Worm⁴³, X. Wu¹⁶, F. Würthwein²⁶, U. K. Yang¹⁰, W. Yao²⁴, G. P. Yeh¹³, K. Yi²¹, J. Yoh¹³, T. Yoshida³³, I. Yu²³, S. Yu³⁶, J. C. Yun¹³, L. Zanello⁴², A. Zanetti⁴⁷, F. Zetti²⁴, and S. Zucchelli³

¹Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China
²Argonne National Laboratory, Argonne, Illinois 60439, USA
³Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy
⁴Brandeis University, Waltham, Massachusetts 02254, USA
⁵University of California at Davis, Davis, California 95616, USA
⁶University of California at Los Angeles, Los Angeles, California 90024, USA
⁷University of California at Santa Barbara, Santa Barbara, California 93106, USA
⁸Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain
⁹Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
¹⁰Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
¹¹Joint Institute for Nuclear Research, RU-141980 Dubna, Russia
¹²Duke University, Durham, North Carolina 27708, USA
¹³Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
¹⁴University of Florida, Gainesville, Florida 32611, USA
¹⁵Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy
¹⁶University of Geneva, CH-1211 Geneva 4, Switzerland
¹⁷Glasgow University, Glasgow G12 8QQ, United Kingdom
¹⁸Harvard University, Cambridge, Massachusetts 02138, USA
¹⁹Hiroshima University, Higashi-Hiroshima 724, Japan
²⁰University of Illinois, Urbana, Illinois 61801, USA
²¹The Johns Hopkins University, Baltimore, Maryland 21218, USA
²²Institut für Experimentelle Kernphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany
²³Center for High Energy Physics, Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea
²⁴Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
²⁵University College London, London WC1E 6BT, United Kingdom
²⁶Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
²⁷University of Michigan, Ann Arbor, Michigan 48109, USA
²⁸Michigan State University, East Lansing, Michigan 48824, USA
²⁹Institution for Theoretical and Experimental Physics, ITEP, Moscow 117259, Russia
³⁰University of New Mexico, Albuquerque, New Mexico 87131, USA
³¹Northwestern University, Evanston, Illinois 60208, USA
³²The Ohio State University, Columbus, Ohio 43210, USA
³³Osaka City University, Osaka 588, Japan
³⁴University of Oxford, Oxford OX1 3RH, United Kingdom
³⁵Universita di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy
³⁶University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
³⁷Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I-56100 Pisa, Italy
³⁸University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
³⁹Purdue University, West Lafayette, Indiana 47907, USA
⁴⁰University of Rochester, Rochester, New York 14627, USA
⁴¹Rockefeller University, New York, New York 10021, USA
⁴²Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, “La Sapienza,” I-00185 Roma, Italy
⁴³Rutgers University, Piscataway, New Jersey 08855, USA
⁴⁴Texas A&M University, College Station, Texas 77843, USA
⁴⁵Texas Tech University, Lubbock, Texas 79409, USA
⁴⁶Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada
⁴⁷Istituto Nazionale di Fisica Nucleare, University of Trieste, Udine, Italy
⁴⁸University of Tsukuba, Tsukuba, Ibaraki 305, Japan
⁴⁹Tufts University, Medford, Massachusetts 02155, USA
⁵⁰Waseda University, Tokyo 169, Japan
⁵¹University of Wisconsin, Madison, Wisconsin 53706, USA
⁵²Yale University, New Haven, Connecticut 06520, USA

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Phys. Rev. D 73, 052002 – Published 3 March, 2006

DOI: https://doi.org/10.1103/PhysRevD.73.052002

Abstract

We present the first measurement of the $A_{2}$ and $A_{3}$ angular coefficients of the $W$ boson produced in proton-antiproton collisions. We study $W \to e ν_{e}$ and $W \to μ ν_{μ}$ candidate events produced in association with at least one jet at CDF, during Run Ia and Run Ib of the Tevatron at $\sqrt{s} = 1.8 TeV$ . The corresponding integrated luminosity was $110 {pb}^{- 1}$ . The jet balances the transverse momentum of the $W$ and introduces QCD effects in $W$ boson production. The extraction of the angular coefficients is achieved through the direct measurement of the azimuthal angle of the charged lepton in the Collins-Soper rest-frame of the $W$ boson. The angular coefficients are measured as a function of the transverse momentum of the $W$ boson. The electron, muon, and combined results are in good agreement with the standard model prediction, up to order $α_{s}^{2}$ in QCD.

Article Text

References (20)

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Measurement of the azimuthal angle distribution of leptons from $W$ boson decays as a function of the $W$ transverse momentum in $p \bar{p}$ collisions at $\sqrt{s} = 1.8 TeV$

Abstract

See Also

Study of the angular coefficients and corresponding helicity cross sections of the $W$ boson in hadron collisions

Article Text

References (20)

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Measurement of the azimuthal angle distribution of leptons from W boson decays as a function of the W transverse momentum in pp¯ collisions at s=1.8 TeV

Abstract

See Also

Study of the angular coefficients and corresponding helicity cross sections of the W boson in hadron collisions

Article Text

References (20)

Measurement of the azimuthal angle distribution of leptons from $W$ boson decays as a function of the $W$ transverse momentum in $p \bar{p}$ collisions at $\sqrt{s} = 1.8 TeV$

Study of the angular coefficients and corresponding helicity cross sections of the $W$ boson in hadron collisions