https://scholars.lib.ntu.edu.tw/handle/123456789/606615
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Lin C.-W | en_US |
dc.contributor.author | Chen Y.-C | en_US |
dc.contributor.author | Lee Y.-J | en_US |
dc.contributor.author | Chang P | en_US |
dc.contributor.author | Belle collaboration. | en_US |
dc.contributor.author | PAO-TI CHANG | en_US |
dc.date.accessioned | 2022-04-25T06:31:19Z | - |
dc.date.available | 2022-04-25T06:31:19Z | - |
dc.date.issued | 2021 | - |
dc.identifier.issn | 18248039 | - |
dc.identifier.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105526733&partnerID=40&md5=425b1453317c3cb05ff30a2edc91eee9 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/606615 | - |
dc.description.abstract | The enhancement of charged-particle pairs with large pseudorapidity difference and small azimuthal angle difference, often referred to as the “ridge signal”, is a phenomenon widely observed in high multiplicity proton-proton, proton-ion and deutron-ion collisions, which is not yet fully understood. In heavy-ion collisions, the hydrodynamic expansion of the Quark-Gluon Plasma is the most popular explanation of the ridge signal. Measurements in the e+e- collision system, without the complexities introduced by hadron structure in the initial state, can be a new opportunity to examine the formation of a ridge signal. The first measurement of two-particle angular correlation functions in high multiplicity e+e- collisions at vs = 10.52 GeV is reported. About 31.5 fb-1 hadronic e+e- annihilation data collected by the Belle detector at KEKB are used in this study. Two-particle angular correlation functions are measured over the full azimuth and large pseudorapidity intervals which are defined by either the electron beam axis or the event thrust as a function of charged particle multiplicity. The measurement in the event thrust analysis, with mostly quark and anti-quark pairs determining the reference axis, is sensitive to soft gluon emissions associated with the outgoing (anti-)quarks. No significant ridge signal is observed with analyses performed in either coordinate system. Near-side jet correlations appear to be absent in the thrust axis analysis. The measurements are compared to predictions from various e+e- event generators and expected to provide new constraints to the phenomenological models in the low collision energy regime. ? Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). | - |
dc.relation.ispartof | Proceedings of Science | - |
dc.subject | Colliding beam accelerators; Germanium compounds; Ion sources; Angular correlations; Charged particle multiplicities; Co-ordinate system; Heavy ion collision; Hydrodynamic expansion; Low collision energy; Phenomenological models; Quark-gluon plasma; Heavy ions | - |
dc.title | Search for long range flow-like correlation in hadronic e+e- collisions with Belle | en_US |
dc.type | conference paper | en |
dc.identifier.scopus | 2-s2.0-85105526733 | - |
dc.relation.journalvolume | 390 | - |
item.fulltext | no fulltext | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_5794 | - |
item.grantfulltext | none | - |
item.openairetype | conference paper | - |
crisitem.author.dept | Physics | - |
crisitem.author.orcid | 0000-0003-4064-388X | - |
crisitem.author.parentorg | College of Science | - |
顯示於: | 物理學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。