433 Result(s)
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Article
On tree amplitudes with gluons coupled to gravitons
In this paper, we study the tree amplitudes with gluons coupled to gravitons. We first study the relations among the mixed amplitudes. With BCFW on-shell recursion relation, we show the color-order reversed re...
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Article
A proof of the explicit minimal-basis expansion of tree amplitudes in gauge field theory
In last couple years, an important relation (BCJ relation) between color-ordered tree-level scattering amplitudes of gauge theory has inspired many studies. This relation implies that the minimal basis for the...
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Article
BCJ relation of color scalar theory and KLT relation of gauge theory
We present a field theoretical proof of the conjectured KLT relation which states that the full tree-level scattering amplitude of gluons can be written as a product of color-ordered amplitude of gluons and co...
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Article
Note on cyclic sum and combination sum of color-ordered gluon amplitudes
Continuing our previous study [22] of permutation sum of color ordered tree amplitudes of gluons, in this note, we prove the large-z behavior of their cyclic sum and the combination of cyclic and permutation sums...
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Article
An algebraic approach to BCJ numerators
One important discovery in recent years is that the total amplitude of gauge theory can be written as BCJ form where kinematic numerators satisfy Jacobi identity. Although the existence of such kinematic numer...
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Article
The construction of dual-trace factor in Yang-Mills theory
Recently, a BCJ dual of the color-ordered formula for Yang-Mills amplitude was proposed, where the dual-trace factor satisfies cyclic symmetry and KK-relation. In this paper, we present a systematic constructi...
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Article
Note on construction of dual-trace factor in Yang-Mills theory
In this note we provide a new construction of BCJ dual-trace factor using the kinematic algebra proposed in ar**v:1105.2565 and ar**v:1212.6168. Different from the construction given in ar**v:1304.2978 based o...
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Article
Open AccessDual-color decompositions at one-loop level in Yang-Mills theory
In this work we extend two dual color decompositions of Yang-Mills amplitude to one-loop level. Starting from double-copy expression we translate the Yang-Mills integrand into the dual Del Duca-Dixon-Maltoni f...
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Article
Open AccessNote on symmetric BCJ numerator
We present an algorithm that leads to BCJ numerators satisfying manifestly the three properties proposed by Broedel and Carrasco in [42]. We explicitly calculate the numerators at 4, 5 and 6-points and show th...
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Article
Open AccessNote on soft graviton theorem by KLT relation
Recently, new soft graviton theorem proposed by Cachazo and Strominger has inspired a lot of works. In this note, we use the KLT-formula to investigate the theorem. We have shown how the soft behavior of color...
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Article
Open AccessSearches for third-generation squark production in fully hadronic final states in proton-proton collisions at \( \sqrt{s}=8 \) TeV
Searches for third-generation squarks in fully hadronic final states are presented using data samples corresponding to integrated luminosities of 19.4 or 19.7 fb−1, collected at a centre-of-mass energy of 8 TeV w...
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Article
Open AccessSearch for third-generation scalar leptoquarks in the tτ channel in proton-proton collisions at \( \sqrt{s}=8 \) TeV
A search for pair production of third-generation scalar leptoquarks decaying to top quark and τ lepton pairs is presented using proton-proton collision data at a center-of-mass energy of
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Article
Open AccessMeasurement of the underlying event activity using charged-particle jets in proton-proton collisions at \( \sqrt{s}=2.76 \) TeV
A measurement of the underlying event (UE) activity in proton-proton collisions is performed using events with charged-particle jets produced in the central pseudorapidity region (|η ...
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Article
Open AccessSearch for neutral color-octet weak-triplet scalar particles in proton-proton collisions at \( \sqrt{s}=8 \) TeV
A search for pair production of neutral color-octet weak-triplet scalar particles (Θ0) is performed in processes where one Θ0 decays to a pair of b quark jets and the other to a Z boson plus a jet, with the Z bos...
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Article
Open AccessComparison of the Z/γ ∗ + jets to γ + jets cross sections in pp collisions at \( \sqrt{s}=8 \) TeV
A comparison of the differential cross sections for the processes Z/γ * + jets and photon (γ)+jets is presented. The measurements are based on data collected with the CMS detector ...
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Article
Open AccessSearch for a Higgs boson in the mass range from 145 to 1000 GeV decaying to a pair of W or Z bosons
A search for a heavy Higgs boson in the H → WW and H → ZZ decay channels is reported. The search is based upon proton-proton collision data samples corresponding to an integrated luminosity of up to 5.1 fb−1 at ...
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Article
Open AccessSearch for a charged Higgs boson in pp collisions at \( \sqrt{s}=8 \) TeV
A search for a charged Higgs boson is performed with a data sample corresponding to an integrated luminosity of 19.7 ± 0.5 fb−1 collected with the CMS detector in proton-proton collisions at
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Article
Open AccessOne-loop analysis of the interactions between charmed mesons and Goldstone bosons
We derive the scattering amplitude for Goldstone bosons of chiral symmetry off the pseudoscalar charmed mesons up to leading one-loop order in a covariant chiral effective field theory, using the so-called ext...
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Article
Open AccessSearch for neutral MSSM Higgs bosons decaying into a pair of bottom quarks
A search for neutral Higgs bosons decaying into a b ...
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Article
Open AccessSearch for supersymmetry in the vector-boson fusion topology in proton-proton collisions at \( \sqrt{s}=8 \) TeV
The first search for supersymmetry in the vector-boson fusion topology is presented. The search targets final states with at least two leptons, large missing transverse momentum, and two jets with a large sepa...
