Author: P. (CERN) BagnaiaPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Measurement of Jet Fragmentation Properties at the CERN Ppbar Collider
Author: P. (CERN) BagnaiaMeasurement of Jet Production Properties at the CERN Ppbar Collider
Author: P. BagnaiaMeasurement of Very Large Transverse Momentum Jet Production at the CERN Pp Collider
Author: P. (CERN Bagnaia (GENEVE))Publisher:
ISBN:
Category :
Languages : en
Pages : 11
Book Description
Jet Measurements at the CERN Collider and the Pomeron Structure
Author: Andrew Gerhart BrandtPublisher:
ISBN:
Category :
Languages : en
Pages : 450
Book Description
Properties of Jets Measured with Charged Particles with the ATLAS Detector at the Large Hadron Collider
Author: Seth Conrad ZenzPublisher:
ISBN:
Category :
Languages : en
Pages : 248
Book Description
Jets are identified and their properties studied, in proton-proton collisions at the Large Hadron Collider at center-of-mass energy √s = 7 TeV, using charged particles measured by the ATLAS Inner Detector. Events are selected using a minimum bias trigger, allowing jets at very low transverse momentum to be observed and the tran- sition to high-momentum fully perturbative jets to be studied. Jets are reconstructed using the anti-kt algorithm applied to charged particles with two radius parameter choices, 0.4 and 0.6. An inclusive charged jet transverse momentum cross section measurement from 4 GeV to 100 GeV is shown, for four ranges in rapidity extending to 1.9, and corrected to charged particle-level truth jets. The transverse momenta and longitudinal momentum fractions of charged particles within jets are measured, along with the charged particle multiplicity and the particle density as a function of radial distance from the jet axis. Comparison of the data with the theoretical models implemented in existing tunings of Monte Carlo event generators indicates reasonable overall agreement between data and Monte Carlo. These comparisons are sensitive to Monte Carlo parton showering, hadronization, and soft physics models.
Jet Fragmentation Transverse Momentum Measurements from Di-hadron Correlations in √s
Author: Shreyasi AcharyaPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The transverse structure of jets was studied via jet fragmentation transverse momentum (jT) distributions, obtained using two-particle correlations in proton-proton and proton-lead collisions, measured with the ALICE experiment at the LHC. The highest transverse momentum particle in each event is used as the trigger particle and the region 3
The Charm Content of Jets at the CERN Pp̧ Collider
Author: Makoto IkedaStudies of Two Particle Correlation Functions and Photon-tagged Jet Fragmentation in PbPb and Pp Collisions with CMS at the LHC
Author: Dragos Alexandru VelicanuPublisher:
ISBN:
Category :
Languages : en
Pages : 113
Book Description
This thesis studies of two particle correlations in proton-proton (pp), proton-lead (pPb), and lead-lead (PbPb) collisions, as well as jet fragmentation functions for jets paired with an isolated prompt photon in pp and PbPb collisions to better understand matter in a Quark Gluon Plasma (QGP) state. The correlation studies measure the precise hydrodynamic behavior of PbPb collisions through a Fourier analysis of charged particles emitted from the QGP and show unexpectedly strong collective behavior in high multiplicity pp and pPb collisions. The photon-tagged jet studies provide tight constraints for understanding the interactions between the jet and the Quark Gluon Plasma it traverses by both measuring the jet substructure properties via the fragmentation function, and having a sample of jets unbiased by the interactions we are trying to probe by selecting high energy photon events. These analyses are performed using data recorded by the CMS experiment at the LHC from PbPb, pPb, and pp collisions at a center of mass energy of 5.02 TeV per nucleon-nucleon pair, as well as 2.76 TeV PbPb collisions and 7 TeV pp collisions in the correlation analyses.
ATLAS B-jet Identification Performance and Efficiency Measurement with Tt[over-bar] Events in Pp Collisions at [square Root]s
![ATLAS B-jet Identification Performance and Efficiency Measurement with Tt[over-bar] Events in Pp Collisions at [square Root]s PDF](https://books.google.com/books/content/images/frontcover/xwu3zwEACAAJ?fife=w80-h100)
Author: ATLAS Collaboration CERNPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Abstract: The algorithms used by the ATLAS Collaboration during Run 2 of the Large Hadron Collider to identify jets containing b-hadrons are presented. The performance of the algorithms is evaluated in the simulation and the efficiency with which these algorithms identify jets containing b-hadrons is measured in collision data. The measurement uses a likelihood-based method in a sample highly enriched in tt ̄ events. The topology of the t→Wb decays is exploited to simultaneously measure both the jet flavour composition of the sample and the efficiency in a transverse momentum range from 20 to 600 GeV. The efficiency measurement is subsequently compared with that predicted by the simulation. The data used in this measurement, corresponding to a total integrated luminosity of 80.5 fb−1, were collected in proton-proton collisions during the years 2015-2017 at a centre-of-mass energy s√= 13 TeV. By simultaneously extracting both the efficiency and jet flavour composition, this measurement significantly improves the precision compared to previous results, with uncertainties ranging from 1 to 8% depending on the jet transverse momentum
![Fragmentation Properties of Jets Produced in Pp Collisions at [square Root Sign] S PDF](https://books.google.com/books/content/images/frontcover/dItHAQAAMAAJ?fife=w80-h100)
Author: Bradley Hubbard