17 papers
Aspects of Anomalies: Fermion Family Constraints, Gravitational Form Factors and Scattering Amplitudes
Dario Melle
Quantum anomalies play two complementary roles in quantum field theory: as consistency conditions that constrain the field content of a theory, and as dynamical effects encoded in…
The QCD Trace Anomaly in Pion Gravitational Form Factors with Sudakov Resummation
Claudio Corianò, Dario Melle, Leonardo Torcellini
We discuss the pion gravitational form factors at intermediate and large spacelike momentum transfer in a perturbative-QCD factorization framework. The short-distance kernel is sup…
The Pion Gravitational Form Factors and the Trace Anomaly in QCD Factorization
Claudio Corianò, Hsiang-nan Li, Dario Melle
We study the pion gravitational form factor in QCD factorization, focusing on the trace-anomaly component generated by the non-Abelian \(TJJ\) vertex. The calculation combines a Su…
The Gravitational Form Factor of the Pion in Perturbative QCD with a Dilaton Interaction
Claudio Corianò, Hsiang-nan Li, Dario Melle +1
We investigate the pion gravitational form factors (GFFs) at intermediate and large momentum transfer within the framework of QCD factorization. Our analysis centers on the non-Abe…
Anomaly-mediated Scalar Gravitational Interactions and the Coupling of Conformal Sectors
Claudio Corianò, Stefano Lionetti, Dario Melle +1
We investigate the anomaly-induced activation of a gauge-invariant scalar degree of freedom in General Relativity, the conformalon mode, directly at the level of \(2\to2\) scatteri…
Dilaton Sum Rules of Gravitational Form Factors in QCD at Order
Claudio Corianò, Stefano Lionetti, Dario Melle +1
We formulate a partonic description of hadronic gravitational form factors within QCD, focusing on the three-point function of the energy-momentum tensor and two gluon currents. De…
Heavy Quark Decays in the Bilepton Model
Gennaro Corcella, Claudio Corianò, Dario Melle +1
Given the current absence of new physics signals at the LHC, it is increasingly important to investigate alternative scenarios beyond those commonly explored. In this work, we stud…
Gravitational Form Factors and the QCD Dilaton at Large Momentum Transfer
Claudio Corianò, Stefano Lionetti, Dario Melle +2
We investigate the hard scatterings of hadronic matrix elements corresponding to hadronic gravitational form factors (GFFs) of the pion and proton using QCD factorization, applying…
A Dilaton Sum Rule for the Conformal Anomaly Form Factor in QCD at Order
Claudio Corianò, Stefano Lionetti, Dario Melle +1
We present an off-shell dispersive analysis of the graviton-gluon-gluon () vertex, extending previous investigations carried out in both QED and QCD. Within the framework of a…
Topological Sum Rules and Spectral Flows of Chiral and Gravitational Axion-like Interactions
Claudio Corianò, Stefano Lionetti, Dario Melle
We examine the structure of off-shell effective actions arising from chiral and gravitational anomalies, focusing on the (axial-vector/vector/vector) and (axial-v…
The 33311 Left-Right Bilepton Model
Claudio Corianò, Paul H. Frampton, Dario Melle
We discuss extension of the electroweak gauge group to . This adds new leptons to the familiar 331-model. The explanation…
The Gravitational Form Factor of the Pion and Proton and the Conformal Anomaly
Claudio Corianò, Stefano Lionetti, Dario Melle +1
We analyze the hard scattering amplitude of gravitational form factors (GFFs) of hadrons within QCD factorization at large momentum transfers, focusing on their conformal field the…
Conformal Backreaction, Chiral and Conformal Anomalies in the Early Universe
Claudio Corianò, Stefano Lionetti, Dario Melle +2
The backreaction of a conformal matter sector and its associated conformal anomaly on gravity can be systematically studied using the formalism of the anomaly effective action. Thi…
The Gravitational Form Factors of Hadrons from CFT in Momentum Space and the Dilaton in Perturbative QCD
Claudio Corianò, Stefano Lionetti, Dario Melle +1
We analyze the hard scattering amplitude of the gravitational form factors (GFFs) of hadrons at one-loop, in relation to their conformal field theory (CFT) description, within the…
The (331) Model:Addressing the Fermion Families Problem within Horizontal Anomalies Cancellation
Claudio Corianò, Dario Melle
One of the most important and unanswered problems in particle physics is the origin of the three generations of quarks and leptons. The standard Model does not provide any hint reg…
Axion-like Interactions and CFT in Topological Matter, Anomaly Sum Rules and the Faraday Effect
Claudio Corianò, Mario Cretì, Stefano Lionetti +2
We discuss fundamental aspects of chiral anomaly-driven interactions in conformal field theory (CFT) in four spacetime dimensions. They find application in very general contexts, f…
An Approach to Bifermion Classification
Claudio Coriano, Paul H. Frampton, Thomas W. Kephart +2
One interesting way to extend the standard model is the hypothesis of bifermions which are bosons which couple to pairs of quarks and leptons. We point out that grand unif…