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Related papers: Studies of Fragmentation Functions using e+e- Anni…

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We employ data taken by the JADE and OPAL experiments for an integrated QCD study in hadronic e+e- annihilations at c.m.s. energies ranging from 35 GeV through 189 GeV. The study is based on jet-multiplicity related observables. The…

High Energy Physics - Experiment · Physics 2008-11-26 The Jade , the OPAL collaborations , P. Pfeifenschneider

Properties of the hadronic final state in photoproduction events with large transverse energy are studied at the electron-proton collider HERA. Distributions of the transverse energy, jets and underlying event energy are compared to…

High Energy Physics - Experiment · Physics 2008-11-26 H1-Collaboration , S. Aid et al

The $e^+e^-$ annihilation of unpolarized beams is free from initial hadron states or initial anisotropy around the azimuthal angle, hence ideal for studying the correlations of dynamical origin via final state jets. We investigate the…

High Energy Physics - Phenomenology · Physics 2025-12-03 Xuan Chen , Yuesheng Dai , Shi-Yuan Li , Zong-Guo Si , Huiting Sun

We present a detailed study of photon production in hadronic events in electron-positron annihilation at LEP energies. We show that estimates of the inclusive photon spectrum using the quark-to-photon fragmentation function determined using…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Gehrmann-De Ridder , E. W. N. Glover

In this talk, we consider the computation of D and B fragmentation functions in e+e- annihilation. We present an improved differential cross section that merges together the O(alpha_s^2) fixed-order calculation and the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Carlo Oleari

We report results from five analyses based on data taken with the BABAR detector at the PEP-II asymmetric e+e- collider. Included are branching fraction measurements for many B-meson decays involving eta, eta', omega, phi or a0 mesons and…

High Energy Physics - Experiment · Physics 2007-05-23 J. G. Smith

We have made the first measurement of the double-inclusive B/Bbar energy distribution in e+e- annihilations, using a sample of 400,000 hadronic Z0 decay events recorded in the SLD experiment at SLAC between 1996 and 1998. The small and…

High Energy Physics - Experiment · Physics 2008-11-26 SLD Collaboration , Koya Abe

We present new sets of fragmentation functions for charged pions and kaons, both at leading and next-to-leading order. They are fitted to data on inclusive charged-hadron production in $e^+e^-$ annihilation taken by TPC at PEP ($\sqrt…

High Energy Physics - Phenomenology · Physics 2010-11-01 J. Binnewies , B. A. Kniehl , G. Kramer

We present the first measurement of two-particle angular correlations of charged particles produced in $e^+e^-$ annihilation up to $\sqrt{s}=$ 209 GeV. This analysis utilized the archived hadronic $e^+e^-$ data at center-of-mass energy…

High Energy Physics - Experiment · Physics 2022-11-23 Yen-Jie Lee , Yu-Chen Chen , Yi Chen , Paoti Chang , Marcello Maggi

A novel method of studying e+e- annihilation into hadrons using initial state radiation at e+e- colliders is described. After brief history of the method, its theoretical foundations are considered. Numerous experiments in which exclusive…

High Energy Physics - Experiment · Physics 2015-05-28 V. P. Druzhinin , S. I. Eidelman , S. I. Serednyakov , E. P. Solodov

We report measurements of hadronic final states produced in $e^+e^-$ annihilations from the BaBar and Belle experiments. In particular, we present cross sections measured in several different processes, including two-photon physics,…

High Energy Physics - Experiment · Physics 2008-10-07 Selina Z. Li

Hadronic final states in e+e- annihilitions at centre-of-mass energies from 14GeV up to 189GeV are studied in order to test recent predictions for power corrections to the mean values as well as the distributions of event shape variables.

High Energy Physics - Experiment · Physics 2016-08-31 G. Dissertori , ALEPH collaboration

Results are presented from a study of the structure of hadronic events in high-energy e+e- interactions detected by the L3 detector at LEP. Various event shape distributions and their moments are measured at several energy points at and…

High Energy Physics - Experiment · Physics 2012-08-27 L3 Collaboration

We present preliminary BaBar measurements of hadronic cross sections in $e^+e^-$ annihilation using the radiative return technique. The cross sections for $e^+e^- \to p\bar{p} $, $ 3(\pi^+\pi^-)$, $ 2(\pi^+\pi^-)2\pi^0$, and $…

High Energy Physics - Experiment · Physics 2009-11-11 Nicolas Berger

Data from e+e- annihilation into hadrons collected by the JADE experiment at centre-of-mass energies between 14 GeV and 44 GeV are used to study the four-jet event production rate as a function of the Durham jet algorithm's resolution…

High Energy Physics - Experiment · Physics 2012-05-21 J. Schieck , S. Bethke , O. Biebel , S. Kluth , P. A. Movilla Fernandez , C. Pahl , the JADE Collaboration

The reaction $e^+ e^- \to (D_s^{*+} D_s^- + {\rm c.c.})$ has been used with great success at the CLEO-c detector, and will be a source of valuable future data from the BES-III detector, to obtain information about the properties and decays…

High Energy Physics - Phenomenology · Physics 2011-01-10 Jonathan L. Rosner

We analyze experimental data for the production of Lambda baryons in e^+e^- annihilation in terms of scale dependent, QCD evolved, Lambda fragmentation functions. Apart from the vast majority of the data for which the polarization of an…

High Energy Physics - Phenomenology · Physics 2009-10-30 D. de Florian , M. Stratmann , W. Vogelsang

We propose a method for measuring the hadron charge asymmetry in $\ee$ collisions which is based upon the fragmentation function formalism, and is largely independent of modelling of fragmentation effects. Furthermore, in this method, QCD…

High Energy Physics - Phenomenology · Physics 2009-10-28 P. Nason , B. W. Webber

We study the process of electron-positron annihilation into back-to-back jets, where in each jet a pair of hadrons is detected. The orientation of these two pairs with respect to each other can be used to extract the interference…

High Energy Physics - Phenomenology · Physics 2009-11-10 Daniel Boer , Rainer Jakob , Marco Radici

This document collects the proceedings of the "Parton Radiation and Fragmentation from LHC to FCC-ee" workshop (http://indico.cern.ch/e/ee\_jets16) held at CERN in Nov. 2016. The writeup reviews the latest theoretical and experimental…