Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/26539
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Study of the dependence of direct soft photon production on the jet characteristics in hadronic Z0 decays

AuthorsAbdallah, J.; Martínez-Rivero, Celso CSIC ORCID ; Costa, María José CSIC ORCID; Ferrer, Antonio CSIC ORCID; Fuster, Juan CSIC ORCID; García García, Carmen CSIC ORCID; Oyanguren, Arantza CSIC ORCID; Perepelitsa, Vassil; Salt, José CSIC ORCID; Tortosa, Pablo CSIC; Matorras, Francisco CSIC ORCID
Issue DateJun-2010
PublisherSpringer
CitationEuropean Physical Journal C 67(3-4): 343-366 (2010)
AbstractAn analysis of the direct soft photon production rate as a function of the parent jet characteristics is presented, based on hadronic events collected by the DELPHI experiment at LEP1. The dependences of the photon rates on the jet kinematic characteristics (momentum, mass, etc.) and on the jet charged, neutral and total hadron multiplicities are reported. Up to a scale factor of about four, which characterizes the overall value of the soft photon excess, a similarity of the observed soft photon behavior to that of the inner hadronic bremsstrahlung predictions is found for the momentum, mass, and jet charged multiplicity dependences. However for the dependence of the soft photon rate on the jet neutral and total hadron multiplicities a prominent difference is found for the observed soft photon signal as compared to the expected bremsstrahlung from final state hadrons. The observed linear increase of the soft photon production rate with the jet total hadron multiplicity and its strong dependence on the jet neutral multiplicity suggest that the rate is proportional to the number of quark pairs produced in the fragmentation process, with the neutral pairs being more effectively radiating than the charged ones.
Description24 páginas, 10 figuras, 9 tablas.-- Open Access: This article is distributed under the terms of the Creative Commons Attribution Noncommercial License.-- DELPHI Collaboration: et al.
Publisher version (URL)http://dx.doi.org/10.1140/epjc/s10052-010-1315-5
URIhttp://hdl.handle.net/10261/26539
DOI10.1140/epjc/s10052-010-1315-5
ISSN1434-6044
Appears in Collections:(IFIC) Artículos




Files in This Item:
File Description SizeFormat
fulltext.pdf916,71 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

SCOPUSTM   
Citations

13
checked on May 21, 2022

WEB OF SCIENCETM
Citations

9
checked on May 26, 2022

Page view(s)

329
checked on May 27, 2022

Download(s)

149
checked on May 27, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.