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Book ; Online: First performance studies of a prototype for the CASTOR forward calorimeter at the CMS experiment

Aslanoglou, X. / Cyz, A. / Davis, N. / d'Enterria, D. / Gladysz-Dziadus, E. / Kalfas, C. / Musienko, Y. / Kuznetsov, A. / Panagiotou, A. D.

2007

Abstract: We present results on the performance of the first prototype of the CASTOR quartz-tungsten sampling calorimeter, to be installed in the very forward region of the CMS experiment at the LHC. This study includes GEANT Monte Carlo simulations of the ... ...

Abstract	We present results on the performance of the first prototype of the CASTOR quartz-tungsten sampling calorimeter, to be installed in the very forward region of the CMS experiment at the LHC. This study includes GEANT Monte Carlo simulations of the Cherenkov light transmission efficiency of different types of air-core light guides, as well as analysis of the calorimeter linearity and resolution as a function of energy and impact-point, obtained with 20-200 GeV electron beams from CERN/SPS tests in 2003. Several configurations of the calorimeter have been tested and compared, including different combinations of (i) structures for the active material of the calorimeter (quartz plates and fibres), (ii) various light-guide reflecting materials (glass and foil reflectors) and (iii) photodetector devices (photomultipliers and avalanche photodiodes). Comment: 24 pages, 19 figs. CERN-CMS Note 2006-142. Minor updates
Keywords	Physics - Instrumentation and Detectors ; Nuclear Experiment
Subject code	621
Publishing date	2007-06-17
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Book ; Online: Multiplicity and transverse momentum fluctuations in inelastic proton-proton interactions at the CERN Super Proton Synchrotron

Collaboration, NA61/SHINE / : / Aduszkiewicz, A. / Ali, Y. / Andronov, E. / Anticic, T. / Antoniou, N. / Baatar, B. / Bay, F. / Blondel, A. / Blumer, J. / Bogomilov, M. / Bravar, A. / Brzychczyk, J. / Bunyatov, S. A. / Busygina, O. / Christakoglou, P. / Cirkovic, M. / Czopowicz, T. /

Davis, N. / Debieux, S. / Dembinski, H. / Deveaux, M. / Diakonos, F. / Di Luise, S. / Dominik, W. / Dumarchez, J. / Dynowski, K. / Engel, R. / Ereditato, A. / Feofilov, G. A. / Fodor, Z. / Garibov, A. / Gazdzicki, M. / Golubeva, M. / Grebieszkow, K. / Grzeszczuk, A. / Guber, F. / Haesler, A. / Hasegawa, T. / Herve, A. / Hierholzer, M. / Igolkin, S. / Ivashkin, A. / Kadija, K. / Kapoyannis, A. / Kaptur, E. / Kisiel, J. / Kobayashi, T. / Kolesnikov, V. I. / Kolev, D. / Kondratiev, V. P. / Korzenev, A. / Kowalik, K. / Kowalski, S. / Koziel, M. / Krasnoperov, A. / Kuich, M. / Kurepin, A. / Larsen, D. / Laszlo, A. / Lewicki, M. / Lyubushkin, V. V. / Mackowiak-Pawlowska, M. / Maksiak, B. / Malakhov, A. I. / Manic, D. / Marcinek, A. / Marton, K. / Mathes, H. -J. / Matulewicz, T. / Matveev, V. / Melkumov, G. L. / Morozov, S. / Mrowczynski, S. / Nakadaira, T. / Naskret, M. / Nirkko, M. / Nishikawa, K. / Panagiotou, A. D. / Pavin, M. / Petukhov, O. / Pistillo, C. / Planeta, R. / Popov, B. A. / Posiadala, M. / Pulawski, S. / Puzovic, J. / Rauch, W. / Ravonel, M. / Redij, A. / Renfordt, R. / Richter-Was, E. / Robert, A. / Rohrich, D. / Rondio, E. / Roth, M. / Rubbia, A. / Rustamov, A. / Rybczynski, M. / Sadovsky, A. / Sakashita, K. / Sarnecki, R. / Schmidt, K. / Sekiguchi, T. / Seryakov, A. / Seyboth, P. / Sgalaberna, D. / Shibata, M. / Slodkowski, M. / Staszel, P. / Stefanek, G. / Stepaniak, J. / Strobele, H. / Susa, T. / Szuba, M. / Tada, M. / Tefelska, A. / Tefelski, D. / Tereshchenko, V. / Tsenov, R. / Turko, L. / Ulrich, R. / Unger, M. / Vassiliou, M. / Veberic, D. / Vechernin, V. V. / Vesztergombi, G. / Vinogradov, L. / Wilczek, A. / Wlodarczyk, Z. / Wojtaszek-Szwarc, A. / Wyszynski, O. / Zambelli, L.

2015

Abstract: Measurements of multiplicity and transverse momentum fluctuations of charged particles were performed in inelastic p+p interactions at 20, 31, 40, 80 and 158 GeV/c beam momentum. Results for the scaled variance of the multiplicity distribution and for ... ...

Abstract	Measurements of multiplicity and transverse momentum fluctuations of charged particles were performed in inelastic p+p interactions at 20, 31, 40, 80 and 158 GeV/c beam momentum. Results for the scaled variance of the multiplicity distribution and for three strongly intensive measures of multiplicity and transverse momentum fluctuations \$\Delta[P_{T},N]\$, \$\Sigma[P_{T},N]\$ and \$\Phi_{p_T}\$ are presented. For the first time the results on fluctuations are fully corrected for experimental biases. The results on multiplicity and transverse momentum fluctuations significantly deviate from expectations for the independent particle production. They also depend on charges of selected hadrons. The string-resonance Monte Carlo models EPOS and UrQMD do not describe the data. The scaled variance of multiplicity fluctuations is significantly higher in inelastic p+p interactions than in central Pb+Pb collisions measured by NA49 at the same energy per nucleon. This is in qualitative disagreement with the predictions of the Wounded Nucleon Model. Within the statistical framework the enhanced multiplicity fluctuations in inelastic p+p interactions can be interpreted as due to event-by-event fluctuations of the fireball energy and/or volume. Comment: 18 pages, 12 figures
Keywords	High Energy Physics - Experiment ; Nuclear Experiment
Subject code	612
Publishing date	2015-10-01
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Omega- and Omega+ production in central Pb + Pb collisions at 40 and 158A GeV.

Alt, C / Anticic, T / Baatar, B / Barna, D / Bartke, J / Betev, L / Białkowska, H / Billmeier, A / Blume, C / Boimska, B / Botje, M / Bracinik, J / Bramm, R / Brun, R / Buncić, P / Cerny, V / Christakoglou, P / Chvala, O / Cramer, J G /

Csató, P / Darmenov, N / Dimitrov, A / Dinkelaker, P / Eckardt, V / Farantatos, G / Flierl, D / Fodor, Z / Foka, P / Freund, P / Friese, V / Gál, J / Gaździcki, M / Georgopoulos, G / Gładysz, E / Grebieszkow, K / Hegyi, S / Höhne, C / Kadija, K / Karev, A / Kliemant, M / Kniege, S / Kolesnikov, V I / Kollegger, T / Kornas, E / Korus, R / Kowalski, M / Kraus, I / Kreps, M / van Leeuwen, M / Lévai, P / Litov, L / Lungwitz, B / Makariev, M / Malakhov, A I / Markert, C / Mateev, M / Mayes, B W / Melkumov, G L / Meurer, C / Mischke, A / Mitrovski, M / Molnár, J / Mrówczyński, St / Pálla, G / Panagiotou, A D / Panayotov, D / Petridis, A / Pikna, M / Pinsky, L / Pühlhofer, F / Reid, J G / Renfordt, R / Richard, A / Roland, C / Roland, G / Rybczyński, M / Rybicki, A / Sandoval, A / Sann, H / Schmitz, N / Seyboth, P / Siklér, F / Sitar, B / Skrzypczak, E / Stefanek, G / Stock, R / Ströbele, H / Susa, T / Szentpétery, I / Sziklai, J / Trainor, T A / Varga, D / Vassiliou, M / Veres, G I / Vesztergombi, G / Vranić, D / Wetzler, A / Włodarczyk, Z / Yoo, I K / Zaranek, J / Zimányi, J

Physical review letters

2005 Volume 94, Issue 19, Page(s) 192301

Abstract: Results are presented on Omega production in central Pb+Pb collisions at 40 and 158A GeV beam energy. For the first time in heavy ion reactions, rapidity distributions and total yields were measured for the sum Omega(-) + Omega(+) at 40A GeV and for ... ...

Abstract	Results are presented on Omega production in central Pb+Pb collisions at 40 and 158A GeV beam energy. For the first time in heavy ion reactions, rapidity distributions and total yields were measured for the sum Omega(-) + Omega(+) at 40A GeV and for Omega(-) and Omega(+) separately at 158A GeV. The yields are strongly underpredicted by the string-hadronic UrQMD model but agree better with predictions from hadron gas models.
Language	English
Publishing date	2005-05-20
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.94.192301
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Article: System-size dependence of strangeness production in nucleus-nucleus collisions at squareroot[sNN]=17.3 GeV.

Csató, P / Darmenov, N / Dimitrov, A / Dinkelaker, P / Eckardt, V / Farantatos, G / Flierl, D / Fodor, Z / Foka, P / Freund, P / Friese, V / Gál, J / Gaździcki, M / Georgopoulos, G / Gładysz, E / Grebieszkow, K / Hegyi, S / Höhne, C / Kadija, K / Karev, A / Kliemant, M / Kniege, S / Kolesnikov, V I / Kollegger, T / Kornas, E / Korus, R / Kowalski, M / Kraus, I / Kreps, M / van Leeuwen, M / Lévai, P / Litov, L / Lungwitz, B / Makariev, M / Malakhov, A I / Markert, C / Mateev, M / Mayes, B W / Melkumov, G L / Meurer, C / Mischke, A / Mitrovski, M / Molnár, J / Mrówczyński, St / Pálla, G / Panagiotou, A D / Panayotov, D / Petridis, A / Pikna, M / Pinsky, L / Pühlhofer, F / Reid, J G / Renfordt, R / Richard, A / Roland, C / Roland, G / Rybczyński, M / Rybicki, A / Sandoval, A / Sann, H / Schmitz, N / Seyboth, P / Siklér, F / Sitar, B / Skrzypczak, E / Stefanek, G / Stock, R / Ströbele, H / Susa, T / Szentpétery, I / Sziklai, J / Trainor, T A / Trubnikov, V / Varga, D / Vassiliou, M / Veres, G I / Vesztergombi, G / Vranić, D / Wetzler, A / Włodarczyk, Z / Yoo, I K / Zaranek, J / Zimányi, J

Physical review letters

2005 Volume 94, Issue 5, Page(s) 52301

Abstract: Emission of pi+/-, K+/-, phi, and Lambda was measured in near-central C+C and Si+Si collisions at 158 AGeV beam energy. Together with earlier data for p+p, S+S, and Pb+Pb, the system-size dependence of relative strangeness production in nucleus-nucleus ... ...

Abstract	Emission of pi+/-, K+/-, phi, and Lambda was measured in near-central C+C and Si+Si collisions at 158 AGeV beam energy. Together with earlier data for p+p, S+S, and Pb+Pb, the system-size dependence of relative strangeness production in nucleus-nucleus collisions is obtained. Its fast rise and the saturation observed at about 60 participating nucleons can be understood as the onset of the formation of coherent systems of increasing size.
Language	English
Publishing date	2005-02-11
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.94.052301
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Article: Evidence for an exotic S= -2, Q= -2 baryon resonance in proton-proton collisions at the CERN SPS.

Csató, P / Darmenov, N / Dimitrov, A / Dinkelaker, P / Eckardt, V / Farantatos, G / Filip, P / Flierl, D / Fodor, Z / Foka, P / Freund, P / Friese, V / Gál, J / Gaździcki, M / Georgopoulos, G / Gładysz, E / Hegyi, S / Höhne, C / Kadija, K / Karev, A / Kniege, S / Kolesnikov, V I / Kollegger, T / Korus, R / Kowalski, M / Kraus, I / Kreps, M / van Leeuwen, M / Lévai, P / Litov, L / Makariev, M / Malakhov, A I / Markert, C / Mateev, M / Mayes, B W / Melkumov, G L / Meurer, C / Mischke, A / Mitrovski, M / Molnár, J / Mrówczyński, St / Pálla, G / Panagiotou, A D / Panayotov, D / Perl, K / Petridis, A / Pikna, M / Pinsky, L / Pühlhofer, F / Reid, J G / Renfordt, R / Retyk, W / Roland, C / Roland, G / Rybczyński, M / Rybicki, A / Sandoval, A / Sann, H / Schmitz, N / Seyboth, P / Siklér, F / Sitar, B / Skrzypczak, E / Stefanek, G / Stock, R / Ströbele, H / Susa, T / Szentpétery, I / Sziklai, J / Trainor, T A / Varga, D / Vassiliou, M / Veres, G I / Vesztergombi, G / Vranić, D / Wetzler, A / Włodarczyk, Z / Yoo, I K / Zaranek, J / Zimányi, J

Physical review letters

2004 Volume 92, Issue 4, Page(s) 42003

Abstract: Results of resonance searches in the Xi(-)pi(-), Xi(-)pi(+), Xi;(+)pi(-), and Xi;(+)pi(+) invariant mass spectra in proton-proton collisions at sqrt[s]=17.2 GeV are presented. Evidence is shown for the existence of a narrow Xi(-)pi(-) baryon resonance ... ...

Abstract	Results of resonance searches in the Xi(-)pi(-), Xi(-)pi(+), Xi;(+)pi(-), and Xi;(+)pi(+) invariant mass spectra in proton-proton collisions at sqrt[s]=17.2 GeV are presented. Evidence is shown for the existence of a narrow Xi(-)pi(-) baryon resonance with mass of 1.862+/-0.002 GeV/c(2) and width below the detector resolution of about 0.018 GeV/c(2). The significance is estimated to be above 4.2sigma. This state is a candidate for the hypothetical exotic Xi(--)(3/2) baryon with S=-2, I=3 / 2, and a quark content of (dsdsū). At the same mass, a peak is observed in the Xi(-)pi(+) spectrum which is a candidate for the Xi(0)(3/2) member of this isospin quartet with a quark content of (dsus[-]d). The corresponding antibaryon spectra also show enhancements at the same invariant mass.
Language	English
Publishing date	2004-01-30
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.92.042003
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Article: Lambda and lambda production in central Pb-Pb collisions at 40, 80, and 158A GeV.

Anticic, T / Baatar, B / Barna, D / Bartke, J / Behler, M / Betev, L / Białkowska, H / Billmeier, A / Blume, C / Boimska, B / Botje, M / Bracinik, J / Bramm, R / Brun, R / Buncić, P / Cerny, V / Christakoglou, P / Chvala, O / Cramer, J G /

Csató, P / Darmenov, N / Dimitrov, A / Dinkelaker, P / Eckardt, V / Filip, P / Flierl, D / Fodor, Z / Foka, P / Freund, P / Friese, V / Gál, J / Gaździcki, M / Georgopoulos, G / Gładysz, E / Hegyi, S / Höhne, C / Kadija, K / Karev, A / Kolesnikov, V I / Kollegger, T / Kornas, E / Korus, R / Kowalski, M / Kraus, I / Kreps, M / van Leeuwen, M / Lévai, P / Litov, L / Makariev, M / Malakhov, A I / Markert, C / Mateev, M / Mayes, B W / Melkumov, G L / Meurer, C / Mischke, A / Mitrovski, M / Molnár, J / Mrówczyński, St / Pálla, G / Panagiotou, A D / Panayotov, D / Perl, K / Petridis, A / Pikna, M / Pinsky, L / Pühlhofer, F / Reid, J G / Renfordt, R / Retyk, W / Roland, C / Roland, G / Rybczyński, M / Rybicki, A / Sandoval, A / Sann, H / Schmitz, N / Seyboth, P / Siklér, F / Sitar, B / Skrzypczak, E / Stefanek, G / Stock, R / Ströbele, H / Susa, T / Szentpétery, I / Sziklai, J / Trainor, T A / Varga, D / Vassiliou, M / Veres, G I / Vesztergombi, G / Vranić, D / Wetzler, A / Włodarczyk, Z / Yoo, I K / Zaranek, J / Zimányi, J

Physical review letters

2004 Volume 93, Issue 2, Page(s) 22302

Abstract: Production of Lambda and Antilambda hyperons was measured in central Pb-Pb collisions at 40, 80, and 158A GeV beam energy on a fixed target. Transverse mass spectra and rapidity distributions are given for all three energies. The Lambda/pi ratio at ... ...

Abstract	Production of Lambda and Antilambda hyperons was measured in central Pb-Pb collisions at 40, 80, and 158A GeV beam energy on a fixed target. Transverse mass spectra and rapidity distributions are given for all three energies. The Lambda/pi ratio at midrapidity and in full phase space shows a pronounced maximum between the highest BNL Alternating Gradient Synchrotron and 40A GeV CERN Super Proton Synchrotron energies, whereas the Lambda/pi ratio exhibits a monotonic increase.
Language	English
Publishing date	2004-07-09
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.93.022302
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Article: Event-by-event fluctuations of the Kaon-to-Pion ratio in central Pb+Pb collisions at 158 GeV per nucleon.

Afanasiev, S V / Anticic, T / Bächler, J / Barna, D / Barnby, L S / Bartke, J / Barton, R A / Betev, L / Bialkowska, H / Billmeier, A / Blume, C / Blyth, C O / Boimska, B / Botje, M / Bracinik, J / Brady, F P / Bramm, R / Brun, R / Buncic, P /

Carr, L / Cebra, D / Cooper, G E / Cramer, J G / Csató, P / Eckardt, V / Eckhardt, F / Ferenc, D / Filip, P / Fischer, H G / Fodor, Z / Foka, P / Freund, P / Friese, V / Ftacnik, J / Gál, J / Gazdzicki, M / Georgopoulos, G / Gladysz, E / Harris, J W / Hegyi, S / Hlinka, V / Höhne, C / Igo, G / Ivanov, M / Jacobs, P / Janik, R / Jones, P G / Kadija, K / Kolesnikov, V I / Kollegger, T / Kowalski, M / Lasiuk, B / van Leeuwen, M / Lévai, P / Malakhov, A I / Margetis, S / Markert, C / Mayes, B W / Melkumov, G L / Mischke, A / Molnár, J / Nelson, J M / Odyniec, G / Pálla, G / Panagiotou, A D / Petridis, A / Pikna, M / Pinsky, L / Poskanzer, A M / Prindle, D J / Pühlhofer, F / Reid, J G / Renfordt, R / Retyk, W / Ritter, H G / Röhrich, D / Roland, C / Roland, G / Rybicki, A / Sammer, T / Sandoval, A / Sann, H / Schäfer, E / Schmitz, N / Seyboth, P / Siklér, F / Sitar, B / Skrzypczak, E / Snellings, R / Squier, G T / Stock, R / Strmen, P / Ströbele, H / Susa, T / Szarka, I / Szentpétery, I / Sziklai, J / Toy, M / Trainor, T A / Trentalange, S / Ullrich, T / Varga, D / Vassiliou, M / Veres, G I / Vesztergombi, G / Voloshin, S / Vranic, D / Wang, F / Weerasundara, D D / Wenig, S / Wetzler, A / Whitten, C / Xu, N / Yates, T A / Yoo, I K / Zimányi, J

Physical review letters

2001 Volume 86, Issue 10, Page(s) 1965–1969

Abstract: We present the first measurement of fluctuations from event to event in the production of strange particles in collisions of heavy nuclei. The ratio of charged kaons to charged pions is determined for individual central Pb+Pb collisions. After accounting ...

Abstract	We present the first measurement of fluctuations from event to event in the production of strange particles in collisions of heavy nuclei. The ratio of charged kaons to charged pions is determined for individual central Pb+Pb collisions. After accounting for the fluctuations due to detector resolution and finite number statistics we derive an upper limit on genuine nonstatistical fluctuations, which could be related to a first- or second-order QCD phase transition. Such fluctuations are shown to be very small.
Language	English
Publishing date	2001-03-05
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.86.1965
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