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We present a study of the inclusive charged-particle transverse momentum (pT) spectra as a function of charged-particle multiplicity density at mid-pseudorapidity, dNch/dη, in pp collisions at s√=5.02 and 13 TeV covering the kinematic range |η|<0.8 and 0.15<pT<20 GeV/c. The results are presented for events with at least one charged particle in |η|<1 (INEL>0). The pT spectra are reported for two multiplicity estimators covering different pseudorapidity regions. The pT spectra normalized to that for INEL>0 show little energy dependence. Moreover, the high-pT yields of charged particles increase faster than the charged-particle multiplicity density. The average pT as a function of multiplicity and transverse spherocity is reported for pp collisions at s√=13 TeV. For low- (high-) spherocity events, corresponding to jet-like (isotropic) events, the average pT is higher (smaller) than that measured in INEL>0 pp collisions. Within uncertainties, the functional form of ⟨pT⟩(Nch) is not affected by the spherocity selection. While EPOS LHC gives a good description of many features of data, PYTHIA overestimates the average pT in jet-like events.
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(2019)
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Einzelrezensionen
163 Babenhauserheide, Melanie: Harry Potter und die Widersprüche der Kulturindustrie. Eine ideologiekritische Analyse (DAVID N. SCHMIDT)
165 Ballis, Anja/Pecher, Claudia Maria/ Schuler, Rebecca (Hrsg.): Mehrsprachige Kinder- und Jugendliteratur. Überlegungen zur Systematik, Didaktik und Verbreitung (SVETLANA VISHEK)
167 Bannasch, Bettina/Matthes, Eva (Hrsg.): Kinder- und Jugendliteratur. Historische, erzähl- und medientheoretische, pädagogische und therapeutische Perspektiven (susanne blumesberger)
169 Batzke, Ina/ Erbacher, Eric C. /Heß, Linda M. / Lenhardt, Corinna (Hrsg.): Exploring the Fantastic. Genre, Ideology, and Popular Culture (THOMAS BITTERLICH)
170 Bertling, Maria: All-Age-Literatur. Die Entdeckung einer neuen Zielgruppe und ihrer Rezeptionsmodalitäten (NICOLA KÖNIG)
172 Blümer, Agnes: Mehrdeutigkeit übersetzen. Englische und französische Kinderliteraturklassiker der Nachkriegszeit in deutscher Übertrag (MARTINA SEIFERT)
174 Blumesberger, Susanne/Thunecke, Jörg (Hrsg.): Deutschsprachige Kinder- und Jugendliteratur während der Zwischenkriegszeit und im Exil. Schwerpunkt Österreich (KURT FRANZ)
176 Busch, Nathanael /Velten, Hans Rudolf (Hrsg.): Die Literatur des Mittelalters im Fantasyroman (SONJA LOIDL)
178 Cave, Roderick/Ayad, Sara (Hrsg.): Die Geschichte des Kinderbuches in 100 Büchern (ERNST SEIBERT)
180 Dettmar, Ute/Pecher, Claudia Maria/Schlesinger, Ron (Hrsg.): Märchen im Medienwechsel. Zur Geschichte und Gegenwart des Märchenfilms (MICHAEL STIERSTORFER)
182 Dommermuth, Clarissa: Wir sind dagegen – denn ihr seid dafür. Zur Tradition literarischer Jugendbewegungen im deutschsprachigen Raum (SUSANNE BLUMESBERGER)
184 Ellerbach, Benoît: L’Arabie contée aux Allemands. Fictions interculturelles chez Rafik Schami (ANNETTE KLIEWER)
185 Enklaar, Jattie/ Ester, Hans /Tax, Evelyne (Hrsg.): Studien über Kinder- und Jugendliteratur im europäischen Austausch von 1800 bis heute (IRIS SCHÄFER)
187 Ewers, Hans-Heino: Michael Ende neu entdecken. Was »Jim Knopf«,»Momo« und »Die unendliche Geschichte« Erwachsenen zu sagen haben (MARKUS JANKA)
189 Flegel, Monica/Parkes, Christopher (Hrsg.): Cruel Children in Popular Texts and Cultures (LENA HOFFMANN)
191 Garbe, Christine/Gürth, Christina et al. (Hrsg.): Attraktive Lesestoffe (nicht nur) für Jungen. Erzählmuster und Beispielanalysen zu populärer Kinder- und Jugendliteratur (THOMAS BITTERLICH)
193 Goga, Nina/Kümmerling-Meibauer, Bettina (Hrsg.): Maps and Mapping in Children’s Literature. Landscapes, Seascapes, and Cityscapes (Wolfgang Biesterfeld)
195 Hamer, Naomi /Nodelman, Perry / Reimer, Mavis (Hrsg.): More Words about Pictures. Current Research on Picturebooks and Visual/Verbal Texts for Young People (FARRIBA SCHULZ)
196 Hoffmann, Lena: Crossover. Mehrfachadressierung in Text, Markt und Diskurs (HEIDI LEXE)
198 Josting, Petra/Reuter, Frank/Roeder, Caroline/Wolters, Ute (Hrsg.): »Denn sie rauben sehr geschwind jedes böse Gassenkind.« ›Zigeuner‹-Bilder in Kinder- und Jugendmedien (KURT FRANZ)
200 Langemeyer, Peter /Knutsen, Karen Patrick (Hrsg.): Narratology Plus. Studies in Recent International Narratives for Children and
Young Adults / Narratologie Plus. Studien zur Erzählweise in aktueller internationaler Kinder- und Jugendliteratur (NADINE BIEKER)
202 Museumsinsel Lüttenheid (Hrsg.): Rudolf Dirks. Zwei Lausbuben und die Erfindung des modernen Comics (LUKAS SARVARI)
204 Oeste, Bettina/Preußer, Ulrike (Hrsg.): Neuvermessung deutschsprachiger Erinnerungsstrategien in der Kinder- und Jugendliteratur nach 1990 (annette kliewer)
206 Planka, Sabine (Hrsg.): Berlin. Bilder einer Metropole in erzählenden Medien für Kinder und Jugendliche (KATHARINA EGERER)
208 Press, Alexander: Die Bilder des Comics. Funktionsweisen aus kunst- und bildwissenschaftlicher Perspektive (RALF VOLLBRECHT)
209 Schenk, Klaus /Zeisberg, Ingold (Hrsg.): Fremde Räume. Interkulturalität und Semiotik des Phantastischen (ANNETTE KLIEWER)
211 Schweizerisches Institut für Kinder- und Jugendmedien SIKJM (Hrsg.): Atlas der Schweizer Kinderliteratur. Expeditionen und
Panoramen (SUSANNE RIEGLER)
Sammelrezensionen
213 Heinemann, Caroline: Produktionsräume im zeitgenössischen Kinder- und Jugendtheater. – Hentschel, Ingrid: Theater zwischen Ich und Welt. Beiträge zur Ästhetik des Kinder- und Jugendtheaters. Theorien – Praxis – Geschichte (PHILIPP SCHMERHEIM)
215 Janka, Marcus /Stierstorfer, Michael (Hrsg.): Verjüngte Antike. Griechisch-römische Mythologie in zeitgenössischen Kinder- und Jugendmedien. – Stierstorfer, Michael: Antike Mythologie in der Kinder- und Jugendliteratur der Gegenwart. Unsterbliche Götter- und Heldengeschichten? (KARINA BECKER)
218 Josting, Petra/Kruse, Iris (Hrsg.): Paul Maar. Bielefelder Poet in Residence 2015 | Paderborner Kinderliteraturtage 2016. – Wicke, Andreas /Roßbach, Nikola (Hrsg.): Paul Maar. Studien zum kinder- und jugendliterarischen Werk (SONJA MÜLLER-CARSTENS)
We have identified a mistake in how Fig. 1 is referenced in the text of the article Eur. Phys. J. C 77 (2017) no. 8, 569 which affected three paragraphs of the results section. The corrected three paragraphs as well as the unmodified accompanying figure are reproduced in this document with the correct labeling.
In addition, an editing issue led to a missing acknowledgements section. The missing section is reproduced at the end of this document in the manner in which it should have appeared in the published article.
Measurement of the 244Cm and 246Cm neutron-induced capture cross sections at the n_TOF facility
(2019)
The neutron capture reactions of the 244Cm and 246Cm isotopes open the path for the formation of heavier Cm isotopes and heavier elements such as Bk and Cf in a nuclear reactor. In addition, both isotopes belong to the minor actinides with a large contribution to the decay heat and to the neutron emission in irradiated fuels. There are only two previous 244Cm and 246Cm capture cross section measurements: one in 1969 using a nuclear explosion [1] and the most recent data measured at J-PARC in 2010 [2]. The data for both isotopes are very scarce due to the difficulties in performing the measurements: high intrinsic activity of the samples and limited facilities capable of providing isotopically enriched samples.
We have measured both neutron capture cross sections at the n_TOF Experimental Area 2 (EAR-2) with three C6 D6 detectors and also at Area 1 (EAR-1) with the TAC. Preliminary results assessing the quality and limitations (back-ground subtraction, measurement technique and counting statistics) of this new experimental datasets are presented and discussed.
Study of the photon strength functions and level density in the gamma decay of the n + 234U reaction
(2019)
The accurate calculations of neutron-induced reaction cross sections are relevant for many nuclear applications. The photon strength functions and nuclear level densities are essential inputs for such calculations. These quantities for 235U are studied using the measurement of the gamma de-excitation cascades in radiative capture on 234U with the Total Absorption Calorimeter at n_TOF at CERN. This segmented 4π gamma calorimeter is designed to detect gamma rays emitted from the nucleus with high efficiency. This experiment provides information on gamma multiplicity and gamma spectra that can be compared with numerical simulations. The code DICEBOXC is used to simulate the gamma cascades while GEANT4 is used for the simulation of the interaction of these gammas with the TAC materials. Available models and their parameters are being tested using the present data. Some preliminary results of this ongoing study are presented and discussed.
The idea of slow-neutron capture nucleosynthesis formulated in 1957 triggered a tremendous experimental effort in different laboratories worldwide to measure the relevant nuclear physics input quantities, namely (n,γ) cross sections over the stellar temperature range (from few eV up to several hundred keV) for most of the isotopes involved from Fe up to Bi. A brief historical review focused on total energy detectors will be presented to illustrate how, advances in instrumentation have led, over the years, to the assessment and discovery of many new aspects of s-process nucleosynthesis and to the progressive refinement of theoretical models of stellar evolution. A summary will be presented on current efforts to develop new detection concepts, such as the Total-Energy Detector with γ-ray imaging capability (i-TED). The latter is based on the simultaneous combination of Compton imaging with neutron time-of-flight (TOF) techniques, in order to achieve a superior level of sensitivity and selectivity in the measurement of stellar neutron capture rates.
Fission program at n_TOF
(2019)
Since its start in 2001 the n_TOF collaboration developed a measurement program on fission, in view of advanced fuels in new generation reactors. A special effort was made on measurement of cross sections of actinides, exploiting the peculiarity of the n_TOF neutron beam which spans a huge energy domain, from the thermal region up to GeV. Moreover fission fragment angular distributions have also been measured. An overview of the cross section results achieved with different detectors is presented, including a discussion of the 237Np case where discrepancies showed up between different detector systems. The results on the anisotropy of the fission fragments and its implication on the mechanism of neutron absorption, and in applications, are also shown.
Measurement of the production of charm jets tagged with D0 mesons in pp collisions at √s = 7 TeV
(2019)
The production of charm jets in proton-proton collisions at a center-of-mass energy of s√=7 TeV was measured with the ALICE detector at the CERN Large Hadron Collider. The measurement is based on a data sample corresponding to a total integrated luminosity of 6.23 nb−1, collected using a minimum-bias trigger. Charm jets are identified by the presence of a D0 meson among their constituents. The D0 mesons are reconstructed from their hadronic decay D0 →K−π+. The D0-meson tagged jets are reconstructed using tracks of charged particles (track-based jets) with the anti-kT algorithm in the jet transverse momentum range 5<pchT,jet< 30 GeV/c and pseudorapidity |ηjet| < 0.5. The fraction of charged jets containing a D0-meson increases with pchT,jet from 0.042 ± 0.004 (stat) ± 0.006 (syst) to 0.080 ± 0.009 (stat) ± 0.008 (syst). The distribution of D0-meson tagged jets as a function of the jet momentum fraction carried by the D0 meson in the direction of the jet axis (zch∥) is reported for two ranges of jet transverse momenta, 5<pchT,jet< 15 GeV/c and 15<pchT,jet< 30 GeV/c in the intervals 0.2<zch∥∥<1.0 and 0.4<zch∥∥<1.0, respectively. The data are compared with results from Monte Carlo event generators (PYTHIA 6, PYTHIA 8 and Herwig 7) and with a Next-to-Leading-Order perturbative Quantum Chromodynamics calculation, obtained with the POWHEG method and interfaced with PYTHIA 6 for the generation of the parton shower, fragmentation, hadronisation and underlying event.
Charged-particle pseudorapidity density at mid-rapidity in p-Pb collisions at √sNN = 8.16 TeV
(2019)
The pseudorapidity density of charged particles, dNch/dη, in p–Pb collisions has been measured at a centre-of-mass energy per nucleon–nucleon pair of sNN−−−√ = 8.16 TeV at mid-pseudorapidity for non-single-diffractive events. The results cover 3.6 units of pseudorapidity, |η|<1.8. The dNch/dη value is 19.1±0.7 at |η|<0.5. This quantity divided by ⟨Npart⟩ / 2 is 4.73±0.20, where ⟨Npart⟩is the average number of participating nucleons, is 9.5% higher than the corresponding value for p–Pb collisions at sNN−−−√ = 5.02 TeV. Measurements are compared with models based on different mechanisms for particle production. All models agree within uncertainties with data in the Pb-going side, while HIJING overestimates, showing a symmetric behaviour, and EPOS underestimates the p-going side of the dNch/dη distribution. Saturation-based models reproduce the distributions well for η>−1.3. The dNch/dη is also measured for different centrality estimators, based both on the charged-particle multiplicity and on the energy deposited in the Zero-Degree Calorimeters. A study of the implications of the large multiplicity fluctuations due to the small number of participants for systems like p–Pb in the centrality calculation for multiplicity-based estimators is discussed, demonstrating the advantages of determining the centrality with energy deposited near beam rapidity.
Measurement of the inclusive isolated photon production cross section in pp collisions at √s = 7 TeV
(2019)
The production cross section of inclusive isolated photons has been measured by the ALICE experiment at the CERN LHC in pp collisions at a centre-of-momentum energy of s√= 7 TeV. The measurement is performed with the electromagnetic calorimeter EMCal and the central tracking detectors, covering a range of |η|<0.27 in pseudorapidity and a transverse momentum range of 10<pγT<60 GeV/c. The result extends the pT coverage of previously published results of the ATLAS and CMS experiments at the same collision energy to smaller pT. The measurement is compared to next-to-leading order perturbative QCD calculations and to the results from the ATLAS and CMS experiments. All measurements and theory predictions are in agreement with each other.