Helicity of the W boson in lepton + jets $t\overline{t}$ events - Université Pierre et Marie Curie Access content directly
Journal Articles Physics Letters B Year : 2005

Helicity of the W boson in lepton + jets $t\overline{t}$ events

V.M. Abazov , B. Abbott , Abdelmalek Abdesselam (1) , M. Abolins , V. Abramov , B.S. Acharya , D.L. Adams , M. Adams , S.N. Ahmed , G.D. Alexeev , A. Alton , G.A. Alves , Y. Arnoud (2) , C. Avila , V.V. Babintsev , L. Babukhadia , T.C. Bacon , A. Baden , S. Baffioni (3) , B. Baldin , P.W. Balm , S. Banerjee , E. Barberis , P. Baringer , J. Barreto , J.F. Bartlett , U. Bassler (4) , D. Bauer , A. Bean , F. Beaudette (1) , M. Begel , A. Belyaev , S.B. Beri , G. Bernardi (4) , I. Bertram , A. Besson (2) , R. Beuselinck , V.A. Bezzubov , P.C. Bhat , V. Bhatnagar , M. Bhattacharjee , G. Blazey , F. Blekman , S. Blessing , A. Boehnlein , N.I. Bojko , T.A. Bolton , F. Borcherding , K. Bos , T. Bose , A. Brandt , G. Briskin , R. Brock , G. Brooijmans , A. Bross , D. Buchholz , M. Buehler , V. Buescher , V.S. Burtovoi , J.M. Butler , F. Canelli , W. Carvalho , D. Casey , H. Castilla-Valdez , D. Chakraborty , K.M. Chana , S.V. Chekulaev , D.K. Cho , S. K. Choi , S. Chopra , D. Claes , A.R. Clark , B. Connolly , W.E. Cooper , D. Coppage , S. Crépé-Renaudin (2) , M.A.C. Cummings , D. Cutts , H. da Motta , G.A. Davis , K. De , S.J. de Jong , M. Demarteau , R. Demina , P. Demine , D. Denisov , S.P. Denisov , S. Desai , H.T. Diehl , M. Diesburg , S. Doulas , L.V. Dudko , L. Duflot (1) , S.R. Dugad , A. Duperrin (3) , A. Dyshkant , D. Edmunds , J. Ellison , J.T. Eltzroth , V.D. Elvira , R. Engelmann , S. Eno , P. Ermolov , O.V. Eroshin , J. Estrada , H. Evans , V.N. Evdokimov , T. Ferbel , F. Filthaut , H.E. Fisk , M. Fortner , H. Fox , S. Fu , S. Fuess , E. Gallas , A.N. Galyaev , M. Gao , V. Gavrilov , K. Genser , C.E. Gerber , Y. Gershtein , G. Ginther , B. Gómez , P.I. Goncharov , K. Gounder , A. Goussiou , P.D. Grannis , H. Greenlee , Z.D. Greenwood , S. Grinstein , L. Groer , S. Grünendahl , S.N. Gurzhiev , G. Gutierrez , P. Gutierrez , N.J. Hadley , H. Haggerty , S. Hagopian , V. Hagopian , R.E. Hall , C. Han , Scott Hansen , J.M. Hauptman , Christian Hebert , D. Hedin , J.M. Heinmiller , A.P. Heinson , U. Heintz , M.D. Hildreth , R. Hirosky , J.D. Hobbs , B. Hoeneisen , J. Huang , Yue Huang , I. Iashvili , R. Illingworth , A.S. Ito , M. Jaffré (1) , S. Jain , V. Jain , R. Jesik , K. Johns , M. Johnson , A. Jonckheere , H. Jöstlein , A. Juste , W. Kahl , S. Kahn , E. Kajfasz (3) , A.M. Kalinin , D. Karmanov , D. Karmgard , R. Kehoe , S. Kesisoglou , A. Khanov , A. Kharchilava , B. Klima , J.M. Kohli , A.V. Kostritskiy , J. Kotcher , B. Kothari , A.V. Kozelov , E.A. Kozlovsky , J. Krane , M.R. Krishnaswamy , P. Krivkov , S. Krzywdzinski , M. Kubantseva , S. Kuleshov , Y. Kulik , S. Kunori , A. Kupco , V.E. Kuznetsov , G. Landsberg , W.M. Lee , A. Leflat , F. Lehner , C. Leonidopoulos , J. Lib , Q.Z. Li , J.G.R. Lima , D. Lincoln , S.L. Linn , J. Linnemann , R. Lipton , L. Lueking , C. Lundstedt , C. Luo , A.K.A. Maciel , R.J. Madaras , V.L. Malyshev , V. Manankov , H.S. Mao , T. Marshall , M.I. Martin , S.E.K. Mattingly , A.A. Mayorov , R. Mccarthy , T. Mcmahon , H.L. Melanson , A. Melnitchouk , M. Merkin , K.W. Merritt , C. Miao , H. Miettinen , D. Mihalcea , N. Mokhov , N.K. Mondal , H.E. Montgomery , R.W. Moore , Y.D. Mutaf , E. Nagy , M. Narain , V.S. Narasimham , N.A. Naumann , H.A. Neal , J.P. Negret , S. Nelson , A. Nomerotski , T. Nunnemann , D. O'Neil , V. Oguri , N. Oshima , P. Padley , N. Parashar , R. Partridge , N. Parua , A. Patwa , O. Peters , P. Pétroff (1) , R. Piegai , B.G. Pope , H.B. Prosper , S. Protopopescu , M.B. Przybycien , J. Qian , A. Quadt , S. Rajagopalan , P.A. Rapidis , N.W. Reaya , S. Reucroft , M. Ridel (1) , M. Rijssenbeek , F. Rizatdinova , T. Rockwell , C. Royon , P. Rubinov , R. Ruchti , B.M. Sabirov , G. Sajot (2) , A. Santoro , L. Sawyer , R.D. Schamberger , H. Schellman , A. Schwartzman , E. Shabalina , R.K. Shivpuri , D. Shpakov , M. Shupe , R.A. Sidwell , V. Simak , V. Sirotenko , P. Slattery , R.P. Smith , G.R. Snow , J. Snow , S. Snyder , J. Solomon , Y. Song , V. Sorín , M. Sosebee , N. Sotnikov , K. Soustruznik , M. Souza , N.R. Stanton , G. Steinbrück , D. Stoker , V. Stolin , A. Stone , D.A. Stoyanov , M.A. Strang , M. Strauss , M. Strovink , L. Stutte , A. Sznajder , M. Talby (3) , W. Taylor , S. Tentindo-Repond , T.G. Trippe , A.S. Turcot , P.M. Tuts , R. van Kooten , V. Vaniev , N. Varelas , F. Villeneuve-Seguier (3) , A.A. Volkov , A.P. Vorobiev , H.D. Wahl , Z.-M. Wang , J. Warchol , G. Wattsb , M. Wayne , H. Weerts , A. Whiteb , D. Whiteson , D.A. Wijngaarden , S. Willis , S.J. Wimpenny , J. Womersley , D.R. Woods , Q. Xu , R. Yamada , T. Yasuda , Y.A. Yatsunenko , K. Yip , J. Yub , M. Zanabri , X. Zhangb , B. Zhou , Z. Zhou , M. Zielinski , D. Zieminska , A. Zieminski , V. Zutshi , E.G. Zverev , A. Zylberstejn
V.M. Abazov
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B. Abbott
  • Function : Author
M. Abolins
  • Function : Author
V. Abramov
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B.S. Acharya
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D.L. Adams
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M. Adams
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S.N. Ahmed
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G.D. Alexeev
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A. Alton
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G.A. Alves
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C. Avila
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V.V. Babintsev
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L. Babukhadia
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T.C. Bacon
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A. Baden
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B. Baldin
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P.W. Balm
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S. Banerjee
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E. Barberis
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P. Baringer
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J. Barreto
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J.F. Bartlett
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D. Bauer
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A. Bean
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M. Begel
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A. Belyaev
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S.B. Beri
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R. Beuselinck
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V.A. Bezzubov
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P.C. Bhat
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V. Bhatnagar
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J.M. Butler
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F. Canelli
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W. Carvalho
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D. Casey
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H. Castilla-Valdez
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D. Chakraborty
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K.M. Chana
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S.V. Chekulaev
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D.K. Cho
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S. K. Choi
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S. Chopra
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D. Claes
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A.R. Clark
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W.E. Cooper
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M.A.C. Cummings
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S. Desai
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H.T. Diehl
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M. Diesburg
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S. Doulas
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Abstract

We examine properties of $t\overline{t}$ candidate events in lepton + jets final states to establish the helicities of W bosons in $t\rightarrow$W+b$ decays. Our analysis is based on a direct calculation of a probability density for each event to correspond to a $t\overline{t}$ final state, as a function of the helicity of the $W$ boson. Using the 125 events/pb of data collected by the D0 experiment at the Fermilab Tevatron $p\overline{p}$ Collider at $\sqrt{s}$=1.8 TeV, we obtain a longitudinal helicity fraction $F_0$=0.56$\pm$0.31, consistent with the prediction of $F_0$=0.70 from the standard model.

Dates and versions

in2p3-00024201 , version 1 (02-06-2005)

Identifiers

Cite

V.M. Abazov, B. Abbott, Abdelmalek Abdesselam, M. Abolins, V. Abramov, et al.. Helicity of the W boson in lepton + jets $t\overline{t}$ events. Physics Letters B, 2005, 617, pp.1-10. ⟨10.1016/j.physletb.2005.04.069⟩. ⟨in2p3-00024201⟩
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