Exploring anomalous top interactions via the final lepton in ttbar productions/decays at hadron colliders
arXiv:1104.1221 · doi:10.1103/PhysRevD.83.114045
Abstract
We study momentum distributions of the final-state charged lepton in ppbar/pp --> ttbar --> l^+ X (l=e or mu) at hadron colliders, i.e., Tevatron and Large Hadron Collider (LHC) in order to explore possible new-physics effects in the top-quark sector. Assuming general model-independent ttbar g + ttbar gg and tbW interactions beyond the standard model, we first derive analytical formulas for the corresponding parton-parton processes. We then compute the lepton angular, energy and transverse-momentum distributions in ppbar/pp collisions to clarify how they are affected by those anomalous couplings.
Journal information added. Title slightly changed in the published version (top interaction --> top-quark interaction). One typo in eqs.(15)-(19) corrected (dE_l c_l --> dE_l dc_l)
References in corpus (17)
- Implications of CTEQ global analysis for collider observables
- Measurement of the top quark-pair production cross section with ATLAS in pp collisions at $\sqrt{s}=7\TeV$
- Complete off-shell effects in top quark pair hadroproduction with leptonic decay at next-to-leading order
- Effective-Field-Theory Approach to Top-Quark Production and Decay
- A minimal set of top-Higgs anomalous couplings
- Top pair invariant mass distribution: a window on new physics
- First Measurement of the Cross Section for Top-Quark Pair Production in Proton-Proton Collisions at sqrt(s)=7 TeV
- Observation of Single Top Quark Production and Measurement of |Vtb| with CDF
- Narrow-width approximation accuracy
- Lepton distribution as a probe of new physics in production and decay of the t quark and its polarization
- Narrow-width approximation limitations
- Measurement of the W boson helicity in top quark decays using 5.4 fb^-1 of ppbar collision data
- T-odd correlations from CP violating anomalous top-quark couplings revisited
- Search for anomalous $\boldmath{Wtb}$ couplings in single top quark production
- Direct Top-Quark Width Measurement CDF
- Search for anomalous top quark couplings with the D0 detector
- Addendum to: Search for anomalous top-gluon couplings at LHC revisited
Cited by in corpus (21)
- Top quark spin correlations and polarization at the LHC: standard model predictions and effects of anomalous top chromo moments
- Review of new physics effects in t-tbar production
- Pinning down top dipole moments with ultra-boosted tops
- The Chromoelectric Dipole Moment of the Top Quark in Models with Vector Like Multiplets
- Flavor Symmetric Sectors and Collider Physics
- Constraints on anomalous color dipole operators from Higgs boson production at the LHC
- Latest constraint on non-standard top-gluon couplings at hadron colliders and its future prospect
- Probing chromomagnetic and chromoelectric couplings of the top quark using its polarization in pair production at hadron colliders
- Anomalous Wtb couplings in gamma-proton collision at the LHC
- Optimal-observable Analysis of Possible Non-standard Top-quark Couplings in pp -> t t-bar X -> l^+ X'
- Polarization of top quark as a probe of its chromomagnetic and chromoelectric couplings in production at the Large Hadron Collider
- T-odd correlations from top-quark CEDM in lepton plus jets top-pair events
- Full analysis of general non-standard tbW couplings
- Chromomagnetic and chromoelectric dipole moments of the top quark in the 4GTHDM
- Top and bottom tensor couplings from a color octet scalar
- Probing the Anomalous Couplings of the Top Quark with Gluon at the LHC and Tevatron
- Bounds on the absorptive parts of the chromomagnetic and chromoelectric dipole moments of the top quark from LHC data
- Probing the nonstandard top-gluon couplings through production at the LHC
- Final charged-lepton angular distribution and possible anomalous top-quark couplings in p p -> t tbar X -> l^+ X'
- Probing non-standard top-quark couplings via optimal-observable analyses at LHC
- Probing top quark anomalous moments in boson associated single top quark production at the LHC using polarization and spin correlation