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Next-to-Leading-Order Corrections to Weak Boson Production with a Massive Quark Jet Pair at Hadron Colliders

Title: Next-to-Leading-Order Corrections to Weak Boson Production with a Massive Quark Jet Pair at Hadron Colliders.
Name(s): Febres Cordero, Fernando, author
Reina, Laura, professor directing dissertation
Aluffi, Paolo, outside committee member
Baer, Howard, committee member
Prosper, Harrison, committee member
Piekarewicz, Jorge, committee member
Department of Physics, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: text
Issuance: monographic
Date Issued: 2007
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
Physical Form: online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: We present the calculation of Next-to-Leading-Order Quantum Chromo Dynamics corrections for the production of W or Z weak bosons associated with a bottom anti-bottom quark pair at hadron colliders (ppbar, pp to W/Z bbbar), including the effects of a non-zero bottom-quark mass. We find a considerable reduction of the renormalization and factorization scale dependence of our results with respect to Leading-Order calculations. In particular, we study the impact of the corrections on the total cross section and invariant mass distributions of the bottom anti-bottom quark pair at the Fermilab Tevatron ppbar collider. We perform a detailed comparison with a calculation that considers massless bottom quarks and find significant deviations in regions of phase space with small invariant mass of the bottom anti-bottom quark pair. Our results will be relevant to ongoing and future searches at hadron colliders, as the W/Z bbbar production mode is the main background to important signals, such as light Standard Model Higgs boson production or single top-quark production.
Identifier: FSU_migr_etd-4486 (IID)
Submitted Note: A Dissertation submitted to the Department of Physics in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
Degree Awarded: Fall Semester, 2007.
Date of Defense: September 26, 2007.
Keywords: W/Z Plus Bottom Quarks, NLO QCD, Single-top, Higgs
Bibliography Note: Includes bibliographical references.
Advisory Committee: Laura Reina, Professor Directing Dissertation; Paolo Aluffi, Outside Committee Member; Howard Baer, Committee Member; Harrison Prosper, Committee Member; Jorge Piekarewicz, Committee Member.
Subject(s): Physics
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Owner Institution: FSU