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Measurement of jets and jet quenchin...

Miller, Michael L.

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Measurement of jets and jet quenching at RHIC*.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Measurement of jets and jet quenching at RHIC*./
作者:	Miller, Michael L.
面頁冊數:	171 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1380.
Contained By:	Dissertation Abstracts International65-03B.
標題:	Physics, Elementary Particles and High Energy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3125263
ISBN:	049672553X

Measurement of jets and jet quenching at RHIC*.
Miller, Michael L.

Measurement of jets and jet quenching at RHIC*. - 171 p.

Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1380.

Thesis (Ph.D.)--Yale University, 2004.

We provide here the first study of jets in p+p collisions at RHIC using topological jet reconstruction of charged particles. By analyzing angular correlations of large transverse momentum di-hadron pairs, we also provide the first ever direct observation of jets in heavy ion collisions. Jet fragmentation to charged hadrons is then studied in Au+Au collisions as a function of impact parameter. The small-angle correlations observed in p+p collisions and at all centralities of Au+Au collisions are characteristic of hard-scattering processes already observed in elementary collisions. A strong back-to-back correlation exists for p+p and peripheral Au+Au collisions. In contrast, the back-to-back correlations are reduced considerably in the most central Au+Au collisions, indicating substantial interaction as the hard-scattered partons or their fragmentation products traverse the medium. These data are consistent with perturbative calculations incorporating partonic energy loss in dense QCD matter. To describe the data, these calculations require an initial energy density of &sim;20 GeV/fm3, more than 100 times the density of cold nuclear matter. This is suggestive of the formation of a novel, deconfined state of quark-gluon matter.

ISBN: 049672553XSubjects--Topical Terms:

1019488
Physics, Elementary Particles and High Energy.

Measurement of jets and jet quenching at RHIC*.
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300 $a 171 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1380.
500 $a Director: John Harris.
502 $a Thesis (Ph.D.)--Yale University, 2004.
520 $a We provide here the first study of jets in p+p collisions at RHIC using topological jet reconstruction of charged particles. By analyzing angular correlations of large transverse momentum di-hadron pairs, we also provide the first ever direct observation of jets in heavy ion collisions. Jet fragmentation to charged hadrons is then studied in Au+Au collisions as a function of impact parameter. The small-angle correlations observed in p+p collisions and at all centralities of Au+Au collisions are characteristic of hard-scattering processes already observed in elementary collisions. A strong back-to-back correlation exists for p+p and peripheral Au+Au collisions. In contrast, the back-to-back correlations are reduced considerably in the most central Au+Au collisions, indicating substantial interaction as the hard-scattered partons or their fragmentation products traverse the medium. These data are consistent with perturbative calculations incorporating partonic energy loss in dense QCD matter. To describe the data, these calculations require an initial energy density of &sim;20 GeV/fm3, more than 100 times the density of cold nuclear matter. This is suggestive of the formation of a novel, deconfined state of quark-gluon matter.
520 $a *Relativistic Heavy Ion Collider
590 $a School code: 0265.
650 4 $a Physics, Elementary Particles and High Energy. $3 1019488
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710 2 0 $a Yale University. $3 515640
773 0 $t Dissertation Abstracts International $g 65-03B.
790 1 0 $a Harris, John, $e advisor
790 $a 0265
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3125263