Combination of CDF and D0 measurements of theWboson helicity in top quark decays

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 27 Apr 2012Embargo end date: 01 Jan 2012 Italy, Italy, United Kingdom, Italy, Italy, France, Italy, Italy, Greece, Italy, Brazil, Italy, United States, Netherlands, Germany, Spain, United States, Italy, United Kingdom, Italy, United Kingdom, United States, Netherlands, Italy, Italy, Italy English Publisher:American Physical Society (APS)Journal:Physical Review D, volume 85 (issn: 1550-7998, eissn: 1550-2368,

Copyright policy )Publicly fundedFunded by:FCT | LA 1

Authors: T. AALTONEN; V. M. ABAZOV; B. ABBOTT; M. ABOLINS; B. S. ACHARYA; M. ADAMS; T. ADAMS; +193 Authors

T. AALTONEN; V. M. ABAZOV; B. ABBOTT; M. ABOLINS; B. S. ACHARYA; M. ADAMS; T. ADAMS; J. ADELMAN; E. AGUILO; G. D. ALEXEEV; G. ALKHAZOV; A. ALTON; B. ALVAREZ GONZALEZ; G. ALVERSON; G. A. ALVES; S. AMERIO; D. AMIDEI; A. ANASTASSOV; L. S. ANCU; A. ANNOVI; J. ANTOS; M. AOKI; G. APOLLINARI; J. APPEL; A. APRESYAN; T. ARISAWA; Y. ARNOUD; M. AROV; A. ARTIKOV; J. ASAADI; W. ASHMANSKAS; A. ASKEW; B. ÅSMAN; O. ATRAMENTOV; A. ATTAL; A. AURISANO; C. AVILA; F. AZFAR; J. BACKUSMAYES; F. BADAUD; W. BADGETT; L. BAGBY; B. BALDIN; D. V. BANDURIN; S. BANERJEE; A. BARBARO GALTIERI; E. BARBERIS; A. F. BARFUSS; P. BARINGER; V. E. BARNES; B. A. BARNETT; J. BARRETO; P. BARRIA; J. F. BARTLETT; P. BARTOS; U. BASSLER; D. BAUER; G. BAUER; S. BEALE; A. BEAN; P. H. BEAUCHEMIN; F. BEDESCHI; D. BEECHER; M. BEGALLI; M. BEGEL; S. BEHARI; C. BELANGER CHAMPAGNE; L. BELLANTONI; G. BELLETTINI; J. BELLINGER; J. A. BENITEZ; D. BENJAMIN; A. BERETVAS; S. B. BERI; G. BERNARDI; R. BERNHARD; I. BERTRAM; M. BESANÇON; R. BEUSELINCK; V. A. BEZZUBOV; P. C. BHAT; V. BHATNAGAR; A. BHATTI; M. BINKLEY; D. BISELLO; I. BIZJAK; R. E. BLAIR; G. BLAZEY; S. BLESSING; C. BLOCKER; K. BLOOM; B. BLUMENFELD; A. BOCCI; A. BODEK; A. BOEHNLEIN; V. BOISVERT; D. BOLINE; T. A. BOLTON; E. E. BOOS; G. BORISSOV; D. BORTOLETTO; T. BOSE; J. BOUDREAU; A. BOVEIA; A. BRANDT; B. BRAU; A. BRIDGEMAN; BRIGLIADORI, LUCA; R. BROCK; C. BROMBERG; G. BROOIJMANS; A. BROSS; D. BROWN; E. BRUBAKER; X. B. BU; D. BUCHHOLZ; J. BUDAGOV; H. S. BUDD; S. BUDD; M. BUEHLER; V. BUESCHER; V. BUNICHEV; S. BURDIN; K. BURKETT; T. H. BURNETT; G. BUSETTO; P. BUSSEY; C. P. BUSZELLO; A. BUZATU; K. L. BYRUM; S. CABRERA; C. CALANCHA; P. CALFAYAN; B. CALPAS; S. CALVET; E. CAMACHO PÉREZ; S. CAMARDA; J. CAMMIN; M. CAMPANELLI; M. CAMPBELL; F. CANELLI; A. CANEPA; B. CARLS; D. CARLSMITH; R. CAROSIA; M. A. CARRASCO LIZARRAGA; E. CARRERA; S. CARRILLO; S. CARRON; B. CASAL; M. CASARSA; B. C. K. CASEY; H. CASTILLA VALDEZ; CASTRO, ANDREA; P. CATASTINI; D. CAUZ; V. CAVALIERE; M. CAVALLI SFORZA; A. CERRI; L. CERRITO; S. CHAKRABARTI; D. CHAKRABORTY; K. M. CHAN; A. CHANDRA; S. H. CHANG; Y. C. CHEN; M. CHERTOK; E. CHEU; S. CHEVALIER THÉRY; G. CHIARELLI; G. CHLACHIDZE; F. CHLEBANA; K. CHO; D. K. CHO; S. W. CHO; S. CHOI; D. CHOKHELI; J. P. CHOU; B. CHOUDHARY; T. CHRISTOUDIAS; K. CHUNG; W. H. CHUNG; Y. S. CHUNG; T. CHWALEK; S. CIHANGIR; C. I. CIOBANU; M. A. CIOCCI; D. CLAES; A. CLARK; D. CLARK; J. CLUTTER; G. COMPOSTELLA; M. E. CONVERY; J. CONWAY; M. COOKE; W. E. COOPER; M. CORBO; M. CORCORAN; M. CORDELLI; F. COUDERC;

doi: 10.1103/physrevd.85.071106 , 10.48550/arxiv.1202.5272

arXiv: 1202.5272

Combination of CDF and D0 measurements of theWboson helicity in top quark decays

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Abstract

We report the combination of recent measurements of the helicity of the W boson from top quark decay by the CDF and D0 collaborations, based on data samples corresponding to integrated luminosities of 2.7 - 5.4 fb^-1 of ppbar collisions collected during Run II of the Fermilab Tevatron Collider. Combining measurements that simultaneously determine the fractions of W bosons with longitudinal (f0) and right-handed (f+) helicities, we find f0 = 0.722 \pm 0.081 [\pm 0.062 (stat.) \pm 0.052 (syst.)] and f+ = -0.033 \pm 0.046 [\pm 0.034 (stat.) \pm 0.031 (syst.)]. Combining measurements where one of the helicity fractions is fixed to the value expected in the standard model, we find f0 = 0.682 \pm 0.057 [\pm 0.035 (stat.) \pm 0.046 (syst.)] and f+ = -0.015\pm0.035 [\pm 0.018 (stat.) \pm 0.030 (syst.)]. The results are consistent with standard model expectations.

11 pages, 1 figure, to be submitted to Phys. Rev D Rap. Comm

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Italy, Italy, United Kingdom, Italy, Italy, France, Italy, Italy, Greece, Italy, Brazil, Italy, United States, Netherlands, Germany, Spain, United States, Italy, United Kingdom, Italy, United Kingdom, United States, Netherlands, Italy, Italy, Italy

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Keywords

FERMILAB TEVATRON COLLIDER, 570, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Standard Model, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [SDU.ASTR.HE] Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Fermilab Tevatron, W helicity, FOS: Physical sciences, 530, 72 Physics Of Elementary Particles And Fields, masses, High Energy Physics - Experiment, model- independent, High Energy Physics - Experiment (hep-ex), Helicity, correlations, TEVATRON; CDF; D0; W BOSON; TOP QUARK, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Intermediate Bosons, info:eu-repo/classification/ddc/530, gluon radiation, p-pbar collider; FERMILAB TEVATRON COLLIDER; W bosons; W helicity, Physics, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Nuclear and high energy physics; Physics and astronomy (miscellaneous), ddc:530, 500, Hepex, Decay, Science and Technology, Experiment-Hep, kinestetic, p-pbar collider, fractions, Experimental High Energy Physics, W boson, T Quarks Experiment-Hep, Fermilab Collider Detector, measurements, [PHYS.ASTR.HE] Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]

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