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Towards Higher Theoretical Precision for Electroweak Boson Production with b-Jets at Hadron Colliders.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Towards Higher Theoretical Precision for Electroweak Boson Production with b-Jets at Hadron Colliders./
作者:	Figueroa, Diogenes.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	122 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-04, Section: B.
Contained By:	Dissertations Abstracts International83-04B.
標題:	Particle physics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28547145
ISBN:	9798460426492

Towards Higher Theoretical Precision for Electroweak Boson Production with b-Jets at Hadron Colliders.
Figueroa, Diogenes.

Towards Higher Theoretical Precision for Electroweak Boson Production with b-Jets at Hadron Colliders. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 122 p.

Source: Dissertations Abstracts International, Volume: 83-04, Section: B.

Thesis (Ph.D.)--The Florida State University, 2021.

This item must not be sold to any third party vendors.

Processes involving the production of electroweak gauge bosons(W, Z, γ) or a Higgs boson with b jets play a very important role in stress testing the Standard Model and constitute major backgrounds in most searches of new physics beyond the Standard Model at present and future colliders.Given the unprecedented experimental precision that will be reached by the Large Hadron Collider (LHC) experiments during the upcoming Run 3and the high-luminosity upgrade (HL-LHC), improving the accuracy of theoretical predictions to reach the few-percent level becomes crucial to the success of their physics program. Besides accounting for QCD quantum corrections, this implies including electroweak quantum effects, b-quark mass effects, and effects due to the off-shellness of the final-state boson decaying into leptons or quarks, as well as revisiting approximations that enters in the evolution of a high-energy collision into final-state jets of hadrons. In this thesis we develop a general formalism (massive dipoles and massive 5 flavorscheme) to systematically account for b-quark mass effects at all stages, from the b-quark parton densities in the initial-state protons to the matching of b quarks from the hard scattering to the final-state hadrons via parton shower.Formal results form this thesis have been implemented in the Madisqe framework to allow the general calculation of Standard Model cross sections including the first order of QCD and electroweak corrections and accounting for full b-quark mass effects. Furthermore, they have been used to improve the efficiency and numerical stability of NLOX, a public domain framework for the automated calculation of one-loop Standard Model scattering amplitudes.As a particularly interesting study case, we present in this thesis the case of Z + b jets. The production of a Z boson with bottom quarks can probe both the fundamental properties of b quarks as constituents of hadrons and hadron jets, and represents one of the major backgrounds to precision measurements of Higgs-boson couplings in ZH (H → bb̅) associated production as well as in many searches of new physics. In this thesis, we study in particular the impact of EW corrections and b-quark mass effects on total and differential rates for Z + b jets at the LHC.

ISBN: 9798460426492Subjects--Topical Terms:

3433269
Particle physics.
Subjects--Index Terms:

Automated computations

Towards Higher Theoretical Precision for Electroweak Boson Production with b-Jets at Hadron Colliders.
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500 $a Source: Dissertations Abstracts International, Volume: 83-04, Section: B.
500 $a Advisor: Reina, Laura.
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506 $a This item must not be sold to any third party vendors.
520 $a Processes involving the production of electroweak gauge bosons(W, Z, γ) or a Higgs boson with b jets play a very important role in stress testing the Standard Model and constitute major backgrounds in most searches of new physics beyond the Standard Model at present and future colliders.Given the unprecedented experimental precision that will be reached by the Large Hadron Collider (LHC) experiments during the upcoming Run 3and the high-luminosity upgrade (HL-LHC), improving the accuracy of theoretical predictions to reach the few-percent level becomes crucial to the success of their physics program. Besides accounting for QCD quantum corrections, this implies including electroweak quantum effects, b-quark mass effects, and effects due to the off-shellness of the final-state boson decaying into leptons or quarks, as well as revisiting approximations that enters in the evolution of a high-energy collision into final-state jets of hadrons. In this thesis we develop a general formalism (massive dipoles and massive 5 flavorscheme) to systematically account for b-quark mass effects at all stages, from the b-quark parton densities in the initial-state protons to the matching of b quarks from the hard scattering to the final-state hadrons via parton shower.Formal results form this thesis have been implemented in the Madisqe framework to allow the general calculation of Standard Model cross sections including the first order of QCD and electroweak corrections and accounting for full b-quark mass effects. Furthermore, they have been used to improve the efficiency and numerical stability of NLOX, a public domain framework for the automated calculation of one-loop Standard Model scattering amplitudes.As a particularly interesting study case, we present in this thesis the case of Z + b jets. The production of a Z boson with bottom quarks can probe both the fundamental properties of b quarks as constituents of hadrons and hadron jets, and represents one of the major backgrounds to precision measurements of Higgs-boson couplings in ZH (H → bb̅) associated production as well as in many searches of new physics. In this thesis, we study in particular the impact of EW corrections and b-quark mass effects on total and differential rates for Z + b jets at the LHC.
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650 4 $a Computational physics. $3 3343998
650 4 $a High temperature physics. $3 3192580
653 $a Automated computations
653 $a Dipole subtraction formalism
653 $a High energy physics
653 $a Next-to-leading cross section
690 $a 0798
690 $a 0216
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710 2 $a The Florida State University. $b Physics. $3 2099202
773 0 $t Dissertations Abstracts International $g 83-04B.
790 $a 0071
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28547145