547 research outputs found
Analýza dvoujetových případů v difrakčních ep interakcích s detekovaným protonem na experimentu H1
No full textTitle: Analysis of dijet events in diffractive ep interactions with tagged leading proton at the H1 experiment Author: Richard Polifka Department: Institute of Particle and Nuclear Physics Supervisor: RNDr. Alice Valkárová, DrSc. Supervisor's e-mail address: [email protected] Abstract: An inclusive dijet production in diffractive deep-inelastic scattering is measured. The diffractive selection is based on tagging of the leading proton in the Forward Proton Spectrometer. The statistics of events obtained during the HERA II running period (integrated luminosity of 156.7 pb−1 ) enables the measurement of jet final states with leading proton for the first time. The data cover the phase space of xIP < 0.1, |t| <= 1.0 GeV2 and 4 <= Q2 <= 110 GeV2 . The dijet data are compared with the next to leading order predictions of the quantum chromodynamics (QCD). The phase space of diffractive dijets is in this analysis by factor of 3 in xIP larger than in previous measurements. The QCD predictions based on the DGLAP parton evolution describe the measured data well even in a non-DGLAP enriched phase space where one on the jets goes into the region close to the direction of the outgoing proton. The measured single-differential cross sections are compared to several Monte Carlo models with different treatment of...Název práce: Analýza dvoujetových případů v difrakčních ep interakcích s detekovaným protonem na experimentu H1 Autor: Richard Polifka Katedra (ústav): Ústav částicové a jaderné fyziky Vedoucí dizertační práce: RNDr. Alice Valkárová, DrSc. e-mail vedoucího: [email protected] Abstrakt: V této práci jsou měřeny inkluzivní dvoujetové koncové stavy v nepružných difrakčních případech s detekovaným rozptýleným protonem. Tento proton je měřen v dopředném detektoru Forward Proton Spectrometer. Vysoká statistika těchto případů v období HERA II s integrovanou celkovou luminositou 156.7 pb−1 umožňuje první měření tohoto druhu za celou dobu provozu experimentu HERA. Data pokrývají kinematickou oblast xIP < 0.1, |t| <= 1.0 GeV2 a 4 <= Q2 <= 110 GeV2 . Naměřená dvoujetová data jsou porovnána s předpovědmi poruchové kvantové chromodynamiky ve druhém řádu rozvoje vazbové konstanty αs. Tyto předpovědi jsou založené na difrakčních partonových distribučních funkcích získaných z předchozích měření inkluzivních difrakčních případů. Fázový prostor pro případy s difrakčními dijety byl rozšířen oproti předchozím měřením třikrát. Případy, kdy jeden z jetů směřuje do přední oblasti detektoru H1 by měly...Ústav částicové a jaderné fyzikyInstitute of Particle and Nuclear PhysicsFaculty of Mathematics and PhysicsMatematicko-fyzikální fakult
Analysis of dijet events in diffractive interactions with tagged leading proton at the H1 Experiment
No full textTitle: Analysis of dijet events in diffractive ep interactions with tagged leading proton at the H1 experiment Author: Richard Polifka Department: Institute of Particle and Nuclear Physics Supervisor: RNDr. Alice Valkárová, DrSc. Supervisor's e-mail address: [email protected] Abstract: An inclusive dijet production in diffractive deep-inelastic scattering is measured. The diffractive selection is based on tagging of the leading proton in the Forward Proton Spectrometer. The statistics of events obtained during the HERA II running period (integrated luminosity of 156.7 pb−1 ) enables the measurement of jet final states with leading proton for the first time. The data cover the phase space of xIP < 0.1, |t| <= 1.0 GeV2 and 4 <= Q2 <= 110 GeV2 . The dijet data are compared with the next to leading order predictions of the quantum chromodynamics (QCD). The phase space of diffractive dijets is in this analysis by factor of 3 in xIP larger than in previous measurements. The QCD predictions based on the DGLAP parton evolution describe the measured data well even in a non-DGLAP enriched phase space where one on the jets goes into the region close to the direction of the outgoing proton. The measured single-differential cross sections are compared to several Monte Carlo models with different treatment of..
sj-docx-1-ine-10.1177_15910199231196451 - Supplemental material for The effect of occlusion location and technique in mechanical thrombectomy for minor stroke
No full textSupplemental material, sj-docx-1-ine-10.1177_15910199231196451 for The effect of occlusion location and technique in mechanical thrombectomy for minor stroke by Isaac Josh Abecassis, Eyad Almallouhi, Reda M. Chalhoub, Ahmed Helal, Janki R. Naidugari, Sami Al Kasab, Eric Bass, Dale Ding, Vasu Saini, Joshua D. Burks, Ilko L. Maier, Pascal Jabbour, Joon-Tae Kim, Stacey Wolfe, Ansaar Rai, Marios-Nikos Psychogios, Edgar Samaniego, Adam S. Arthur, Shinichi Yoshimura, Brian Howard, Ali Alawieh, Isabel Fragata, Hugo Cuellar, Adam Polifka, Justin Mascitelli, Joshua Osbun, Roberto Crosa, Charles Matouk, Min S. Park, Michael R. Levitt, Travis Dumont, Richard W. Williamson, Alejandro M. Spiotta and Robert M. Starke in Interventional Neuroradiology</p
Measurement of Dijet Production in Diffractive Deep-Inelastic Scattering with a Leading Proton at HERA
No full textThe latest results from the H1 experiment on the diffractive dijet production in deep-inelastic scattering are presented. The first jet measurements with a tagged leading protonare described. The results are discussed in terms of diffractive parton densities and Regge factorisation
Study of Exclusive Di-Pion Production in Diffractive ep Interactions
No full textÚstav částicové a jaderné fyzikyInstitute of Particle and Nuclear PhysicsMatematicko-fyzikální fakultaFaculty of Mathematics and Physic
Di-jet Production in Diffractive Deep-Inelastic Scattering using Proton Spectrometers at HERA
No full textThe latest results from the H1 experiment on the diffractive dijet production in deep-inelastic scattering are presented. The first jet measurements with a tagged leading proton are described and the results are discussed in terms of diffractive parton densities and Regge factorisatio
The study of jet structure of ep interactions with HZTOOL method
No full textÚstav částicové a jaderné fyzikyInstitute of Particle and Nuclear PhysicsFaculty of Mathematics and PhysicsMatematicko-fyzikální fakult
Test of factorization in diffractive deep inelastic scattering and photoproduction at HERA
No full textThe QCD factorization theorem in diffraction is tested by comparing diffractive jet production data to QCD predictions based on fits to inclusive diffractive cross section data. H1 measured dijet production with a leading proton detected in the Very Forward Proton Spectrometer (VFPS), both in deep-inelastic scattering and in photoproduction. The DIS measurements are complemented by measurements of dijet production with an associated rapidity gap and in a data sample selected with a leading proton in the Forward Proton Spectrometer (FPS)
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