1 / 6

Understanding Jet Modification and Energy Density in High-pT Collider Events at RHIC

This study explores jet suppression and energy density in high-pT events away from mid-rapidity in A+A and A+B collisions at RHIC. Utilizing Bjorken's framework, we investigate how longitudinally accelerating mediums affect jet behavior and quenching models. By examining symmetry and charge transport, we aim to constrain models of initial thermalization and assess how variations in density impact jet-medium interactions. We also probe potential signatures of quark and gluon transport through charge tracing, as well as angular correlations in particle production.

calix
Télécharger la présentation

Understanding Jet Modification and Energy Density in High-pT Collider Events at RHIC

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Further down the high-pT road Paul Stankus ORNL RHIC II High-pT April 30

  2. Away from mid-rapidity General rule: In Bjorken picture, rest frame of medium seen by a jet is also frame where jet is purely transverse. Away from mid-rapidity dET/dh is lower -- also energy density? Simplest way to dial down energy density without changing geometry Can tomography reveal history of energy density in this region? Does quenching follow dET/dh? Does this constrain model of initial thermalization? If medium accelerates longitudinally, will it have a visible effect on jet modification? dET/dyLab dET/d(yLab-D)

  3. Breaking excessive symmetry Symmetric A+A collisions enforce “excessive” symmetry; no v1 or v3 at mid-rapidity, for example. Running asymmetric A+B ion collisions lets one examine an overlap region with less symmetry, and so more variations in density x path length. How do v1, v2andv3 of high-pT jet particles compare to v1, v2andv3 of low-pT flow? More constraints on quenching models.

  4. Naturally, try both together Ideal exercise for tomography is to look at jet-medium interactions when medium has minimal symmetry, both in transverse plane and forward-backward. Want to bring the whole family along away from mid-rapidity: singles, pairs, PID, heavy flavor, photon-tagged, etc. (But, how much do you really need?) SPS Data (WA80)

  5. Charge transport Can electrical charge trace the transport of quarks vs gluons up to high pT, both for jet fragments and otherwise? Change charge of incoming quarks and look very carefully at where change in net charge shows up. High-precision (h+/h-)p+Au / (h+/h-)n+Au vs pT we can do in existing data Interesting down to very low pT; is “bulk” purely gluonic? (not this WG) Future exotic nuclei combinations? Baryon and isospin transport… p+Au n+Au

  6. Round up the usual suspects…. • W and Z production at RHIC? (A PWS perennial) • Nuclear effects at high x and historically high Q2 • W+/W- sensitive to u/d asymmetry at high x Angular correlations: 2-, 3-, 4-particle? How much is enough?

More Related