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Spin determination at the Large Hadr...

Harvard University.

Spin determination at the Large Hadron Collider.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Spin determination at the Large Hadron Collider.
Author:	Yavin, Itay.
Description:	149 p.
Notes:	Adviser: Nima Arkani-Hamed.
Notes:	Source: Dissertation Abstracts International, Volume: 67-12, Section: B, page: 7139.
Contained By:	Dissertation Abstracts International67-12B.
Subject:	Physics, Elementary Particles and High Energy.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3245214

Spin determination at the Large Hadron Collider.
Yavin, Itay.

Spin determination at the Large Hadron Collider. - 149 p.

Adviser: Nima Arkani-Hamed.

Thesis (Ph.D.)--Harvard University, 2006.

The Littlest Higgs model offers a way to solve the Hierarchy problem by introduring heavy partners to Standard Model particles with the same spin and quantum numbers. However, this model is only good up to &sim; 10 TeV. In the second part of this thesis we present an extension of this model into a strongly coupled theory above &sim; 10 TeV. We use the celebrated AdS/CFT correspondence to calculate properties of the low-energy physics in terms of high-energy parameters. We comment on some of the tensions inherent to such a construction involving a large-N CFT (or equivalently, an AdS space).Subjects--Topical Terms:

227490
Physics, Elementary Particles and High Energy.

Spin determination at the Large Hadron Collider.
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245 1 0 $a Spin determination at the Large Hadron Collider.
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500 $a Adviser: Nima Arkani-Hamed.
500 $a Source: Dissertation Abstracts International, Volume: 67-12, Section: B, page: 7139.
502 $a Thesis (Ph.D.)--Harvard University, 2006.
520 # $a The Littlest Higgs model offers a way to solve the Hierarchy problem by introduring heavy partners to Standard Model particles with the same spin and quantum numbers. However, this model is only good up to &sim; 10 TeV. In the second part of this thesis we present an extension of this model into a strongly coupled theory above &sim; 10 TeV. We use the celebrated AdS/CFT correspondence to calculate properties of the low-energy physics in terms of high-energy parameters. We comment on some of the tensions inherent to such a construction involving a large-N CFT (or equivalently, an AdS space).
520 # $a The quantum field theory describing the Electroweak sector demands some new physics at the TeV scale in order to unitarize the scattering of longitudinal W bosons. If this new physics takes the form of a scalar Higgs boson then it is hard to understand the huge hierarchy of scales between the Electroweak scale &sim; TeV and the Planck scale &sim; 1019 GeV. This is known as the Naturalness problem. Normally, in order to solve this problem, new particles, in addition to the Higgs boson, are required to be present in the spectrum below a few TeV. If such particles are indeed discovered at the Large Hadron Collider it will become important to determine their spin. Several classes of models for physics beyond the Electroweak scale exist. Determining the spin of any such newly discovered particle could prove to be the only means of distinguishing between these different models. In the first part of this thesis; we present a thorough discussion regarding such a measurement. We survey the different potentially useful channels for spin determination and a detailed analysis of the most promising channel is performed.
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