ZYAM and $\bf v_2$: Underestimating jet yields from dihadron azimuth correlations

Details ZYAM and $\bf v_2$: Underestimating jet yields from dihadron azimuth correlations ZYAM and $\bf v_2$: Underestimating jet yields from dihadron azimuth correlations

2009-04-10

arxiv.org/abs/0904.1733v2

Phys.Rev.C81:014905,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 11 figures

Scientific paper

10.1103/PhysRevC.81.014905

Dihadron azimuth correlations can provide combinatoric access to jet structure in nuclear collisions. To isolate true jet yields a background must be subtracted, including a constant offset and a contribution from "elliptic flow" (azimuth quadrupole measured by $v^2_2$). The principle of "zero yield at minimum" (ZYAM) has been introduced to determine the constant offset. Independent measurements determine $v_2^2$. This analysis demonstrates that the ZYAM concept is invalid (offset typically overestimated) and $v_2^2$ is also overestimated by conventional measurements. Jet yields are thus substantially underestimated in more-central A-A collisions, and the "away-side" azimuth peak (back-to-back jet correlations) is strongly distorted, leading to incorrect inference of "Mach shocks."

Affiliated with

Also associated with

No associations

Rating

ZYAM and $\bf v_2$: Underestimating jet yields from dihadron azimuth correlations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with ZYAM and $\bf v_2$: Underestimating jet yields from dihadron azimuth correlations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ZYAM and $\bf v_2$: Underestimating jet yields from dihadron azimuth correlations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-674263