Colored bosons on top FBA and angular cross section for ttA= production

With full data set that corresponds to an integrated luminosity of 9.4 fba19.4 fba1, CDF has updated the top-quark forwardabackward asymmetry (FBA) as functions of rapidity difference |Iy||Iy| and ttA= invariant mass MttA=. Beside the sustained inconsistency between experiments and standard model (S...

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Published inPhysics letters. B Vol. 722; no. 4-5; pp. 372 - 377
Main Authors Benbrik, R, Chen, Chuan-Hung, Kacimi, M
Format Journal Article
LanguageEnglish
Published 01.05.2013
Subjects
Asymmetry
Bosons
Color
Elementary particles
Invariants
Mathematical analysis
Octets
Scalars
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Summary:With full data set that corresponds to an integrated luminosity of 9.4 fba19.4 fba1, CDF has updated the top-quark forwardabackward asymmetry (FBA) as functions of rapidity difference |Iy||Iy| and ttA= invariant mass MttA=. Beside the sustained inconsistency between experiments and standard model (SM) predictions at large |Iy||Iy| and MttA=, an unexpected large first Legendre moment with a1=0.39A-0.108a1=0.39A-0.108 is found. In order to solve the large top FBA, we study the contributions of color triplet scalar and color octet vector boson. We find that the top FBA at
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ISSN:0370-2693
DOI:10.1016/j.physletb.2013.07.057