인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
A bstract The ATLAS collaboration has introduced and implemented a strategy for selecting, and measuring the properties of, large-radius jets composed from skinny subjets in heavy ion collisions at the LHC. We show how measurements of these jets teach us about the resolution length L res of quark-gluon plasma (QGP) and can teach us how jet substructure shapes the wakes that jets excite in the droplets of QGP through which they pass. We begin by using Hybrid Model calculations to reproduce experimental measurements published by ATLAS in 2023 of R AA for large-radius jets in PbPb collisions, identified via first reconstructing skinny anti- k t R = 0.2 subjets and then clustering R = 1 jets using them as constituents. We investigate how R AA for these large-radius jets depends on the angle between the two skinny subjets involved in the final reclustering step of the R = 1 jet. We show how these observables depend on L res and demonstrate that the published ATLAS data rule out L res = ∞: these data are inconsistent with any picture in which an entire parton shower loses energy coherently as if it were a single colored object. Demonstrating that the QGP can resolve partons within a parton shower is central to the broader program of using jet quenching measurements to probe QGP. We make further use of this setup by analyzing the response of the medium to the passage of large-radius R = 2 jets containing two skinny R = 0 . 2 subjets, produced in gamma-jet events, identified as above. We introduce novel jet-shape observables that allow us to visualize the angular shape of the soft hadrons originating from the wakes that wide jets with two skinny subjets excite in the droplet of QGP, as a function of the angular separation between the subjets. We find that even when the two hard subjets are 0.8 to 1.0 radians apart, a single broad wake is produced. Only when the two subjets are even farther apart is the presence of two sub-wakes revealed. We show that the way in which jet structure shapes jet wakes can be visualized with similar clarity in experimental data by measuring the observables we have introduced using only those hadrons with low transverse momenta. These observables thus offer a new and distinctive way of seeing jet wakes in heavy ion collision data.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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