Search: id:"swepub:oai:lup.lub.lu.se:c46bbab1-c1d1-4320-bd49-535d06faad70" >
Event-shape and mul...
-
Acharya, SVariable Energy Cyclotron Centre
(author)
Event-shape and multiplicity dependence of freeze-out radii in pp collisions at √s = 7 TeV
- Article/chapterEnglish2019
Publisher, publication year, extent ...
Numbers
-
LIBRIS-ID:oai:lup.lub.lu.se:c46bbab1-c1d1-4320-bd49-535d06faad70
-
https://lup.lub.lu.se/record/c46bbab1-c1d1-4320-bd49-535d06faad70URI
-
https://doi.org/10.1007/JHEP09(2019)108DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:art swepub-publicationtype
-
Subject category:ref swepub-contenttype
Notes
-
Two-particle correlations in high-energy collision experiments enable the extraction of particle source radii by using the Bose-Einstein enhancement of pion production at low relative momentum q ∝ 1/R. It was previously observed that in pp collisions at s = 7TeV the average pair transverse momentum kT range of such analyses is limited due to large background correlations which were attributed to mini-jet phenomena. To investigate this further, an event-shape dependent analysis of Bose-Einstein correlations for pion pairs is performed in this work. By categorizing the events by their transverse sphericity ST into spherical (ST > 0:7) and jet-like (ST < 0:3) events a method was developed that allows for the determination of source radii for much larger values of kT for the first time. Spherical events demonstrate little or no background correlations while jet-like events are dominated by them. This observation agrees with the hypothesis of a mini-jet origin of the non-femtoscopic background correlations and gives new insight into the physics interpretation of the kT dependence of the radii. The emission source size in spherical events shows a substantially diminished kT dependence, while jet-like events show indications of a negative trend with respect to kT in the highest multiplicity events. Regarding the emission source shape, the correlation functions for both event sphericity classes show good agreement with an exponential shape, rather than a Gaussian one. [Figure not available: see fulltext.]. © 2019, The Author(s).
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Adolfsson, JonatanLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)jo5066ad
(author)
-
Christiansen, PeterLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)hep-pcs
(author)
-
Ljunggren, MartinLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)hep-mlj
(author)
-
Nassirpour, AdrianLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ad6218na
(author)
-
Oskarsson, AndersLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)kosu-aos
(author)
-
Richert, TuvaLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,University of Copenhagen(Swepub:lu)hep-trt
(author)
-
Silvermyr, DavidLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)kosu-dsi
(author)
-
Stenlund, EvertLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)kosu-est
(author)
-
Vislavicius, VytautasLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,University of Copenhagen(Swepub:lu)hep-vvl
(author)
-
Zinovjev, GBogolyubov Institute for Theoretical Physics, NASU
(author)
-
Variable Energy Cyclotron CentrePartikel- och kärnfysik
(creator_code:org_t)
-
ALICE Collaboration
Related titles
-
In:Journal of High Energy Physics2019:91029-8479
Internet link
Find in a library
To the university's database
- By the author/editor
-
Acharya, S
-
Adolfsson, Jonat ...
-
Christiansen, Pe ...
-
Ljunggren, Marti ...
-
Nassirpour, Adri ...
-
Oskarsson, Ander ...
-
show more...
-
Richert, Tuva
-
Silvermyr, David
-
Stenlund, Evert
-
Vislavicius, Vyt ...
-
Zinovjev, G
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Subatomic Physic ...
- Articles in the publication
-
Journal of High ...
- By the university
-
Lund University