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Factorization and Precision Calculat...

Feige, Ilya Eric Alexander.

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Factorization and Precision Calculations in Particle Physics.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Factorization and Precision Calculations in Particle Physics./
作者:	Feige, Ilya Eric Alexander.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2015,
面頁冊數:	281 p.
附註:	Source: Dissertations Abstracts International, Volume: 77-06, Section: B.
Contained By:	Dissertations Abstracts International77-06B.
標題:	Particle physics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3738771
ISBN:	9781339292502

Factorization and Precision Calculations in Particle Physics.
Feige, Ilya Eric Alexander.

Factorization and Precision Calculations in Particle Physics. - Ann Arbor : ProQuest Dissertations & Theses, 2015 - 281 p.

Source: Dissertations Abstracts International, Volume: 77-06, Section: B.

Thesis (Ph.D.)--Harvard University, 2015.

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

We state and prove to all orders in perturbation theory a factorization theorem in Quantum Chromodynamics that concisely describes the separation of the physics associated with jet formation from that associated with the hard-scattering in high-energy particle collisions. We show how the factorization theorem, which provides an equality between amplitudes in gauge theories, can be readily applied to precision calculations of cross-sections. In the resulting factorized cross sections, the components relevant to jet production are universal and perturbatively calculable. Their renormalization group evolution can be used to sum large logarithms of scale ratios to all orders in perturbation theory, thus enabling quantitive predictions in the regime of disparate scales relevant to many important collider-physics observables. As an application, we calculate the observable 2-subjettiness at next-to-next-to-next-to-leading-logarithmic order for the decay of boosted heavy color-singlet particles such as Electroweak bosons. Our calculation is the first analytic calculation of a jet substructure observable.

ISBN: 9781339292502Subjects--Topical Terms:

3433269
Particle physics.

Factorization and Precision Calculations in Particle Physics.
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520 $a We state and prove to all orders in perturbation theory a factorization theorem in Quantum Chromodynamics that concisely describes the separation of the physics associated with jet formation from that associated with the hard-scattering in high-energy particle collisions. We show how the factorization theorem, which provides an equality between amplitudes in gauge theories, can be readily applied to precision calculations of cross-sections. In the resulting factorized cross sections, the components relevant to jet production are universal and perturbatively calculable. Their renormalization group evolution can be used to sum large logarithms of scale ratios to all orders in perturbation theory, thus enabling quantitive predictions in the regime of disparate scales relevant to many important collider-physics observables. As an application, we calculate the observable 2-subjettiness at next-to-next-to-next-to-leading-logarithmic order for the decay of boosted heavy color-singlet particles such as Electroweak bosons. Our calculation is the first analytic calculation of a jet substructure observable.
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