338 citations · 3.7k across the 64 of their papers we have counts for
51 papers · 1 filter
First Two-Hadron Form Factor from QCD
Felipe G. Ortega-Gama, Raúl A. Briceño, Ivan M. Burbano +1
We present the first QCD determination of an energy-dependent form factor for a two-hadron scattering state. In particular, we calculate the QCD contribution to the forward electro…
Resolving the with Exchange from Lattice QCD
Nelson Pitanga Lachini, Raúl A. Briceño
We revisit the lattice QCD description of the doubly charmed tetraquark using a finite-volume scattering formalism that incorporates one-pion exchange nonperturbatively,…
Resolving the structure of bound states using lattice quantum field theories
Joseph Moscoso, Felipe G. Ortega-Gama, Raúl A. Briceño +3
This work presents the first lattice calculation of a two-to-two particle matrix element of a local current. This exploratory calculation is performed using a leading-order pionles…
Introduction to Lattice Field Theory
Raúl A. Briceño
This chapter provides a pedagogical introduction to lattice quantum field theory, with strong emphasis on lattice quantum chromodynamics. The chapter reviews key foundational conce…
Inclusive reactions from finite Minkowski spacetime correlation functions
Marco A. Carrillo, Raúl A. Briceño, Alexandru M. Sturzu
The need to determine scattering amplitudes of few-hadron systems for arbitrary kinematics expands a broad set of subfields of modern-day nuclear and hadronic physics. In this work…
Three-pion effects in mixing
Andrew W. Jackura, Raúl A. Briceńo, Maxwell T. Hansen
The rate of mixing between a neutral kaon and an anti-kaon () is given, in part, by a long-range matrix element, defined with two insertions of the weak Hamiltonian…
Prospects for via lattice QCD
Raúl A. Briceño, Andrew W. Jackura, Arkaitz Rodas +1
The scattering amplitude plays a key role in a wide range of phenomena, including understanding the inner structure of scalar resonances as well as constra…
Hadron Spectroscopy with Lattice QCD
John Bulava, Raúl Briceño, William Detmold +13
The status and prospects for investigations of exotic and conventional hadrons with lattice QCD are discussed. The majority of hadrons decay strongly via one or multiple decay-chan…
Accessing scattering amplitudes using quantum computers
Raul A. Briceño, Marco A. Carrillo, Juan V. Guerrero +2
Future quantum computers may serve as a tool to access non-perturbative real-time correlation functions. In this talk, we discuss the prospects of using these to study Compton scat…
Constraining coupled-channel amplitudes in finite-volume
Raul A. Briceno, Jozef J. Dudek, Luka Leskovec
Whether one is interested in accessing the excited spectrum of hadrons or testing the standard model of particle physics, electroweak transition processes involving multi-hadron ch…
A model-independent framework for determining finite-volume effects of spatially nonlocal operators
Raúl A. Briceño, Christopher J. Monahan
We present a model-independent framework to determine finite-volume corrections of matrix elements of spatially-separated current-current operators. We define these matrix elements…
On-shell representations of two-body transition amplitudes: single external current
Raúl A. Briceño, Andrew W. Jackura, Felipe G. Ortega-Gama +1
This work explores scattering amplitudes that couple two-particle systems via a single external current insertion, . Such amplitudes can provide structural info…
Solving relativistic three-body integral equations in the presence of bound states
Andrew W. Jackura, Raúl A. Briceño, Sebastian M. Dawid +2
We present a systematically improvable method for numerically solving relativistic three-body integral equations for the partial-wave projected amplitudes. The method consists of a…
The role of boundary conditions in quantum computations of scattering observables
Raúl A. Briceño, Juan V. Guerrero, Maxwell T. Hansen +1
Quantum computing may offer the opportunity to simulate strongly-interacting field theories, such as quantum chromodynamics, with physical time evolution. This would give access to…
Consistency checks for two-body finite-volume matrix elements: II. Perturbative systems
Raúl A. Briceño, Maxwell T. Hansen, Andrew W. Jackura
Using the general formalism presented in Refs. [1,2], we study the finite-volume effects for the matrix element of an external current coupled…
Long-range electroweak amplitudes of single hadrons from Euclidean finite-volume correlation functions
Raúl A. Briceño, Zohreh Davoudi, Maxwell T. Hansen +2
A relation is presented between single-hadron long-range matrix elements defined in a finite Euclidean spacetime, and the corresponding infinite-volume Minkowski amplitudes. This r…
Consistency checks for two-body finite-volume matrix elements: I. Conserved currents and bound states
Raúl A. Briceño, Maxwell T. Hansen, Andrew W. Jackura
Recently, a framework has been developed to study form factors of two-hadron states probed by an external current. The method is based on relating finite-volume matrix elements, co…
Numerical exploration of three relativistic particles in a finite volume including two-particle resonances and bound states
Fernando Romero-López, Stephen R. Sharpe, Tyler D. Blanton +2
In this work, we use an extension of the quantization condition, given in Ref. [1], to numerically explore the finite-volume spectrum of three relativistic particles, in the case t…
Unitarity of the infinite-volume three-particle scattering amplitude arising from a finite-volume formalism
Raúl A. Briceño, Maxwell T. Hansen, Stephen R. Sharpe +1
In a previous publication, two of us derived a relation between the scattering amplitude of three identical bosons, , and a real function referred to as the {divergen…
The quark-mass dependence of elastic scattering from QCD
David J. Wilson, Raul A. Briceno, Jozef J. Dudek +2
We present a determination of the isospin-1/2 elastic scattering amplitudes in S and P partial waves using lattice Quantum Chromodynamics. The amplitudes, constrained for a la…
Form factors of two-hadron states from a covariant finite-volume formalism
Alessandro Baroni, Raúl A. Briceño, Maxwell T. Hansen +1
In this work we develop a Lorentz-covariant version of the previously derived formalism for relating finite-volume matrix elements to transit…
PDFs in small boxes
Raúl A. Briceño, Juan V. Guerrero, Maxwell T. Hansen +1
PDFs can be studied directly using lattice QCD by evaluating matrix elements of non-local operators. A number of groups are pursuing numerical calculations and investigating possib…
Finite-volume matrix elements of two-body states
Alessandro Baroni, Raúl A. Briceño, Maxwell T. Hansen +1
In this talk, we present a framework for studying structural information of resonances and bound states coupling to two-hadron scattering states. This makes use of a recently propo…
Progress report on the relativistic three-particle quantization condition
Tyler D. Blanton, Raúl A. Briceño, Maxwell T. Hansen +2
We describe recent work on the relativistic three-particle quantization condition, generalizing and applying the original formalism of Hansen and Sharpe, and of Briceño, Hansen and…