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Title: Diffractive hadroproduction of W{sup {+-}} and Z{sup 0} bosons at high energies

Abstract

Results from a phenomenological analysis of W and Z hard diffractive hadroproduction at high energies are reported. Using the Regge factorization approach, we consider the recent diffractive parton density functions extracted by the H1 Collaboration at DESY-HERA. In addition, we take into account multiple Pomeron exchange corrections considering a gap survival probability factor. It is found that the ratio of diffractive to nondiffractive boson production is in good agreement with the CDF and D0 data. We make predictions which could be compared to future measurements at the LHC.

Authors:
;  [1];  [2]
  1. High Energy Physics Phenomenology Group, GFPAE, IF-UFRGS, Caixa Postal 15051, CEP 91501-970, Porto Alegre, Rio Grande do Sul (Brazil)
  2. Centro de Ciencias Exatas e Tecnologicas, Universidade Federal do Pampa, Campus de Bage, Rua Carlos Barbosa, CEP 96400-970, Bage, Rio Grande do Sul (Brazil)
Publication Date:
OSTI Identifier:
20929552
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevD.75.114013; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CERN LHC; DESY; FACTORIZATION; FERMILAB COLLIDER DETECTOR; HADRONIC PARTICLE DECAY; HERA STORAGE RING; PARTICLE PRODUCTION; POMERANCHUK PARTICLES; PROBABILITY; W MINUS BOSONS; W PLUS BOSONS; Z NEUTRAL BOSONS

Citation Formats

Gay Ducati, M. B., Machado, M. M., and Machado, M. V. T. Diffractive hadroproduction of W{sup {+-}} and Z{sup 0} bosons at high energies. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.114013.
Gay Ducati, M. B., Machado, M. M., & Machado, M. V. T. Diffractive hadroproduction of W{sup {+-}} and Z{sup 0} bosons at high energies. United States. doi:10.1103/PHYSREVD.75.114013.
Gay Ducati, M. B., Machado, M. M., and Machado, M. V. T. Fri . "Diffractive hadroproduction of W{sup {+-}} and Z{sup 0} bosons at high energies". United States. doi:10.1103/PHYSREVD.75.114013.
@article{osti_20929552,
title = {Diffractive hadroproduction of W{sup {+-}} and Z{sup 0} bosons at high energies},
author = {Gay Ducati, M. B. and Machado, M. M. and Machado, M. V. T.},
abstractNote = {Results from a phenomenological analysis of W and Z hard diffractive hadroproduction at high energies are reported. Using the Regge factorization approach, we consider the recent diffractive parton density functions extracted by the H1 Collaboration at DESY-HERA. In addition, we take into account multiple Pomeron exchange corrections considering a gap survival probability factor. It is found that the ratio of diffractive to nondiffractive boson production is in good agreement with the CDF and D0 data. We make predictions which could be compared to future measurements at the LHC.},
doi = {10.1103/PHYSREVD.75.114013},
journal = {Physical Review. D, Particles Fields},
number = 11,
volume = 75,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2007},
month = {Fri Jun 01 00:00:00 EDT 2007}
}
  • An analysis of W{sup {+-}} and Z{sup 0} hard diffractive hadroproduction at high energies is presented obtained using the simple assumption of Regge factorization and considering the recent diffractive parton density functions extracted by the H1 Collaboration at DESY-HERA. The corresponding multiple Pomeron exchange corrections to the single Pomeron one is considered by taking into account by a gap survival probability factor. It is shown that the ratio of diffractive to nondiffractive boson production is in good agreement with the Tevatron data. Estimations which are relevant for the incoming measurements at the LHC are discussed.
  • We extend the k{sub perpendicular}-factorization formalism for exclusive photoproduction of vector mesons to the production of electroweak Z{sup 0} bosons. Predictions for the {gamma}p{yields}Z{sup 0}p and pp{yields}ppZ{sup 0} reactions are given using an unintegrated gluon distribution tested against deep inelastic data. We show distributions in the Z{sup 0} rapidity, transverse momentum of Z{sup 0} as well as in relative azimuthal angle between outgoing protons. The contributions of different flavors are discussed. Absorption effects lower the cross section by a factor of 1.5-2, depending on the Z-boson rapidity. We also discuss the production of Z{sup 0} bosons in central inclusive production.more » Here rapidity and (x{sub IP,1},x{sub IP,2}) distributions of Z{sup 0} are calculated. The corresponding cross section is about 3 orders of magnitude larger than that for the purely exclusive process.« less
  • We present the invariant-mass distributions for the production of Z/sup 0/Z/sup 0/ pairs by W/sup +/W/sup -/ and Z/sup 0/Z/sup 0/ fusion at 40 TeV. Results are given for Higgs-boson masses of 0.5 and 1.0 TeV and a rapidity cut eta/sub c/ of 1.5. These calculations, which are performed using the effective-gauge-boson approximation, are compared with the corresponding results for the production of W/sup +/W/sup -/ pairs by the same fusion mechanism. A comparison between the approximate calculation and an exact calculation of Z/sup 0/Z/sup 0/ pair production by W/sup +/W/sup -/ fusion is also presented
  • The nobel price lecture of Carlo Rubbia is reprinted. The author recounts the identification of the intermediate vector bosons from the collisions of proton and antiproton beams at CERN.(AIP)
  • Using the Pade unitarized one-loop {ital W}{sup +}{ital W{minus}} and {ital Z}{sup 0}{ital Z0} scattering amplitudes, we investigate the production of gauge boson pairs at high-energy {ital pp} colliders. We focus on the case where the Higgs boson mass parameter {ital m}{sub {ital H}} is large ({ital m}{sub {ital H}}{approx gt}10 TeV), in which case the Higgs sector is strongly interacting and the Pade {ital s}-wave amplitude develops a resonance at a relatively low mass {mu}{similar to}1 TeV. This resonance is narrower than an elementary Higgs boson of the same mass. We show that the difference in the widths ismore » discernible in the gauge boson invariant mass plots.« less