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Femtoscopic Signatures of Small QGP ...

Clark, Michael.

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Femtoscopic Signatures of Small QGP Droplets in Proton-Lead Collisions at the Large Hadron Collider.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Femtoscopic Signatures of Small QGP Droplets in Proton-Lead Collisions at the Large Hadron Collider./
作者:	Clark, Michael.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	235 p.
附註:	Source: Dissertations Abstracts International, Volume: 80-10, Section: B.
Contained By:	Dissertations Abstracts International80-10B.
標題:	High Temperature Physics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13810929
ISBN:	9781392018316

Femtoscopic Signatures of Small QGP Droplets in Proton-Lead Collisions at the Large Hadron Collider.
Clark, Michael.

Femtoscopic Signatures of Small QGP Droplets in Proton-Lead Collisions at the Large Hadron Collider. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 235 p.

Source: Dissertations Abstracts International, Volume: 80-10, Section: B.

Thesis (Ph.D.)--Columbia University, 2019.

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

The spacetime dimensions of the particle source in proton-lead collisions at √sNN = 5.02 TeV are measured with the ATLAS detector at the Large Hadron Collider. Femtoscopic measurements are made from correlation functions built with charged pions identified by their ionization energy loss. The measured HBT radii that represent the source dimensions are presented differentially as a function of centrality, transverse momentum, and rapidity. The effect of jet fragmentation on the two-particle correlation function is studied, and a method using opposite-charge pair data to constrain its contributions to the measured correlations is described. The measured source sizes are substantially larger in more central collisions and are observed to decrease with increasing pair transverse momentum. A correlation of the radii with the local charged-particle density dN/dy is demonstrated. The scaling of the extracted radii with the mean number of participating nucleons is also used to compare a parameterization of an initial-geometry model that allows for fluctuations in the proton cross-section. The cross-term Rol is measured as a function of rapidity, and a nonzero value is observed that agrees with hydrodynamic predictions. The HBT radii are also shown for central events in intervals of azimuthal angle relative to the 2nd-order event plane, pair transverse momentum, and flow vector magnitude, where the correlation functions are corrected for the event plane resolution. Significant modulations of the transverse HBT radii R out, Rside, and R os are observed. The orientation of this modulation is the same as that in heavy-ion collisions, in which they are attributed to hydrodynamic evolution from an elliptic initial geometry. The sign and transverse momentum dependence of these modulations are consistent with a hydrodynamic evolution of a short-lived medium.

ISBN: 9781392018316Subjects--Topical Terms:

3549859
High Temperature Physics.
Subjects--Index Terms:

Femtoscopy

Femtoscopic Signatures of Small QGP Droplets in Proton-Lead Collisions at the Large Hadron Collider.
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245 1 0 $a Femtoscopic Signatures of Small QGP Droplets in Proton-Lead Collisions at the Large Hadron Collider.
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300 $a 235 p.
500 $a Source: Dissertations Abstracts International, Volume: 80-10, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Cole, Brian.
502 $a Thesis (Ph.D.)--Columbia University, 2019.
506 $a This item must not be sold to any third party vendors.
520 $a The spacetime dimensions of the particle source in proton-lead collisions at √sNN = 5.02 TeV are measured with the ATLAS detector at the Large Hadron Collider. Femtoscopic measurements are made from correlation functions built with charged pions identified by their ionization energy loss. The measured HBT radii that represent the source dimensions are presented differentially as a function of centrality, transverse momentum, and rapidity. The effect of jet fragmentation on the two-particle correlation function is studied, and a method using opposite-charge pair data to constrain its contributions to the measured correlations is described. The measured source sizes are substantially larger in more central collisions and are observed to decrease with increasing pair transverse momentum. A correlation of the radii with the local charged-particle density dN/dy is demonstrated. The scaling of the extracted radii with the mean number of participating nucleons is also used to compare a parameterization of an initial-geometry model that allows for fluctuations in the proton cross-section. The cross-term Rol is measured as a function of rapidity, and a nonzero value is observed that agrees with hydrodynamic predictions. The HBT radii are also shown for central events in intervals of azimuthal angle relative to the 2nd-order event plane, pair transverse momentum, and flow vector magnitude, where the correlation functions are corrected for the event plane resolution. Significant modulations of the transverse HBT radii R out, Rside, and R os are observed. The orientation of this modulation is the same as that in heavy-ion collisions, in which they are attributed to hydrodynamic evolution from an elliptic initial geometry. The sign and transverse momentum dependence of these modulations are consistent with a hydrodynamic evolution of a short-lived medium.
590 $a School code: 0054.
650 4 $a High Temperature Physics. $3 3549859
650 4 $a Physics. $3 516296
650 4 $a Nuclear physics. $3 517741
650 4 $a Particle physics. $3 3433269
653 $a Femtoscopy
653 $a Flow in small systems
653 $a HBT radii
653 $a Proton-lead collisions
690 $a 0597
690 $a 0605
690 $a 0756
690 $a 0798
710 2 $a Columbia University. $b Physics. $3 2101563
773 0 $t Dissertations Abstracts International $g 80-10B.
790 $a 0054
791 $a Ph.D.
792 $a 2019
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13810929