High-energy hadron-hadron (dipole-dipole) scattering from lattice QCD
- Dipartimento di Fisica, Universita di Pisa, and INFN, Sezione di Pisa, Largo Pontecorvo 3, I-56127 Pisa (Italy)
In this paper the problem of high-energy hadron-hadron (dipole-dipole) scattering is approached (for the first time) from the point of view of lattice QCD, by means of Monte Carlo numerical simulations. In the first part, we give a brief review of how high-energy scattering amplitudes can be reconstructed, using a functional-integral approach, in terms of certain correlation functions of two Wilson loops, and we also briefly recall some relevant analyticity and crossing-symmetry properties of these loop-loop correlation functions, when going from Euclidean to Minkowskian theory. In the second part, we shall see how these (Euclidean) loop-loop correlation functions can be evaluated in lattice QCD, and we shall compare our numerical results with some nonperturbative analytical estimates that appeared in the literature, discussing, in particular, the question of the analytic continuation from Euclidean to Minkowskian theory and its relation to the still unsolved problem of the asymptotic s dependence of the hadron-hadron total cross sections.
- OSTI ID:
- 21254312
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 78, Issue 7; Other Information: DOI: 10.1103/PhysRevD.78.074510; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ASYMPTOTIC SOLUTIONS
COMPARATIVE EVALUATIONS
CORRELATION FUNCTIONS
CROSSING SYMMETRY
DIPOLES
EUCLIDEAN SPACE
HADRON-HADRON INTERACTIONS
HADRONS
LATTICE FIELD THEORY
MINKOWSKI SPACE
MONTE CARLO METHOD
QUANTUM CHROMODYNAMICS
SCATTERING
SCATTERING AMPLITUDES
SIMULATION
TOTAL CROSS SECTIONS
WILSON LOOP