26 research outputs found
Recent results from NA61/SHINE
The main physics goals of the NA61/SHINE programme on strong interactions are
the study of the properties of the onset of deconfinement and the search for
signatures of the critical point of strongly interacting matter. These goals
are pursued by performing an energy (beam momentum 13A -158A GeV/c) and system
size (p+p, p+Pb, Be+Be, Ar+Sc, Xe+La) scan. This publication reviews results
and plans of NA61/SHINE. In particular, recent inclusive spectra and new
results on fluctuations and correlations of identified hadrons in inelastic p+p
and centrality selected Be+Be interactions at the SPS energies are presented.
The energy dependence of quantities inspired by the Statistical Model of the
Early Stage (kink, horn and step) show unexpected behavior in p+p collisions.
The NA61/SHINE results are compared with the corresponding data of other
experiments and model predictions
Recent results from the strong interactions program of NA61/SHINE
The NA61/SHINE experiment studies hadron production in hadron+hadron,
hadron+nucleus and nucleus+nucleus collisions. The strong interactions program
has two main purposes: study the properties of the onset of deconfinement and
search for the signatures of the critical point of strongly interacting matter.
This aim is pursued by performing a two-dimensional scan of the phase diagram
by varying the energy/momentum (13A-158A GeV/c) and the system size (p+p,
Be+Be, Ar+Sc, Xe+La) of the collisions. This publication reviews recent results
from p+p, Be+Be and Ar+Sc interactions. Measured particle spectra are discussed
and compared to NA49 results from Pb+Pb collisions. The results illustrate the
progress towards scanning the phase diagram of strongly interacting matter
Energy dependence of hadron spectra and multiplicities in p+p interactions
The NA61/SHINE experiment at the CERN SPS aims to discover the critical point
of strongly interacting matter and study the properties of the onset of
deconfinement. In order to reach these goals measurements of hadron production
properties are performed in nucleus-nucleus, proton-proton and proton-nucleus
interactions as a function of collision energy and size of the colliding
nuclei.
Inclusive spectra of identified hadrons in p+p interactions at the SPS
energies are presented as a function of transverse momentum, transverse mass
and rapidity. The results are compared with the world data and theoretical
models
Physics beyond Collider - Future NA61
The NA61/SHINE experiment studies hadron production in hadronhadron, hadron-nucleus and nucleus-nucleus collisions. The physics program includes strong interaction studies, measurements for neutrino physics experiments and measurements for cosmic ray experiments. Future plans are to extend the program by new measurements needed to understand the onset of deconfiment like open charm production in nucleus+nucleus collisions as well as by studies of fragmentation cross sections required to interpret new AMS-II data. This new program can be realized only by 2020 and requires upgrades to the present NA61/SHINE detector setup
Spectra and multiplicities from NA61/SHINE
One of the main physics goals of the NA61/SHINE programme on strong interactions is the study
of the properties of the onset of deconfinement. This goal is pursued by performing an energy
(beam momentum 13A– 158A GeV/c) and system size (p+p, p+Pb, Be+Be, Ar+Sc, Xe+La) scan.
This paper reviews results and plans of NA61/SHINE. In particular, recently obtained inclusive
spectra in inelastic p+p and centrality selected Be+Be, Ar+Sc interactions at the SPS energies
will be shown. The energy dependence of quantities inspired by the Statistical Model of the Early
Stage (kink, horn and step) shows interesting behavior in p+p interactions, which is not described
by Monte-Carlo models. Moreover a comparison with Be+Be collisions and results from other
heavy ion experiments will be performed
Recent results from NA61/SHINE
The research programme of the NA61 Collaboration covers a wide range
of hadronic physics in the CERN SPS energy range, encompassing measurements
of hadron–hadron, hadron–nucleus as well as nucleus–nucleus
collisions. The latter are analysed to better understand the properties of
hot and dense nuclear matter. In this paper, recent results of particle production
properties as well as event-by-event fluctuations in proton–proton,
as signatures of the critical point of strongly interacting matter, in Be+Be
and Ar+Sc interactions at beam energies of 19A/20A, 30A, 40A, 75A/80A
and 158A GeV/c are presented
Particle production properties at SPS energy range - recent results from the NA61/SHINE experiment
One of the main physics goals of the NA61/SHINE programme on
strong interactions is the study of the properties of the onset of deconfinement.
This goal is pursued by performing an energy- (beam momentum
13A–158A GeV/c) and system-size (p+p, p+Pb, Be+Be, Ar+Sc, Xe+La)
scan. In particular, recent inclusive spectra of identified hadrons in inelastic
p+p and centrality selected Be+Be and Ar+Sc interactions at the SPS
energies. The energy dependence of quantities inspired by the Statistical
Model of the Early Stage (kink, horn and step) are shown
Measurements of π±, K±, p and p¯spectra in 7Be+9Be collisions at beam momenta from 19A to 150A GeV/cwith the NA61/SHINE spectrometer at the CERN SPS
A. Acharya, H. Adhikary, A. Aduszkiewicz, K. K. Allison, E. V. Andronov, T. Antićić, V. Babkin, M. Baszczyk, S. Bhosale, A. Blondel, M. Bogomilov, A. Brandin, A. Bravar, W. Bryliński, J. Brzychczyk, M. Buryakov, O. Busygina, A. Bzdak, H. Cherif, M. Ćirković, M. Csanad , J. Cybowska, T. Czopowicz, A. Damyanova, N. Davis, M. Deliyergiyev, M. Deveaux, A. Dmitriev , W. Dominik, P. Dorosz, J. Dumarchez, R. Engel, G. A. Feofilov, L. Fields, Z. Fodor, A. Garibov, M. Gaździcki, O. Golosov, V. Golovatyuk , M. Golubeva, K. Grebieszkow, F. Guber, A. Haesler, S. N. Igolkin, S. Ilieva, A. Ivashkin, S. R. Johnson, K. Kadija, N. Kargin, E. Kashirin, M. Kiełbowicz, V. A. Kireyeu, V. Klochkov, V. I. Kolesnikov, D. Kolev, A. Korzenev, V. N. Kovalenko, M. Koziel, B. Kozłowski, A. Krasnoperov, W. Kucewicz, M. Kuich, A. Kurepin, D. Larsen, A. László, T. V. Lazareva, M. Lewicki, K. Łojek, V. V. Lyubushkin, M. Maćkowiak-Pawłowska, Z. Majka, B. Maksiak, A. I. Malakhov, A. Marcinek, A. D. Marino, K. Marton, H. -J. Mathes, T. Matulewicz, V. Matveev, G. L. Melkumov, A. O. Merzlaya, B. Messerly, Ł. Mik, S. Morozov, S. Mrówczyński, Y. Nagai, M. Naskręt, V. Ozvenchuk, V. Paolone, O. Petukhov, R. Płaneta, P. Podlaski, B. A. Popov, B. Porfy, M. Posiadała-Zezula, D. S. Prokhorova, D. Pszczel, J. Puzović, M. Ravonel, R. Renfordt, D. Röhrich, E. Rondio, M. Roth, B. T. Rumberger, M. Rumyantsev, A. Rustamov, M. Rybczynski, A. Rybicki, S. Sadhu, A. Sadovsky, I. Selyuzhenkov, A. Yu. Seryakov, P. Seyboth, M. Słodkowski, P. Staszel, G. Stefanek, J. Stepaniak, M. Strikhanov, H. Ströbele, T. Šuša, A. Taranenko, A. Tefelska, D. Tefelski, V. Tereshchenko, A. Toia, R. Tsenov, L. Turko, R. Ulrich, M. Unger, D. Uzhva, F. F. Valiev, D. Veberič, V. V. Vechernin, A. Wickremasinghe, Z. Włodarczyk, O. Wyszyński, E. D. Zimmerman, R. ZwaskaThe NA61/SHINE experiment at the CERN
Super Proton Synchrotron (SPS) studies the onset of deconfinement
in hadron matter by a scan of particle production
in collisions of nuclei with various sizes at a set of energies
covering the SPS energy range. This paper presents results
on inclusive double-differential spectra, transverse momentum
and rapidity distributions and mean multiplicities of π
±,
K±, p and ¯ p produced in the 20% most central 7Be+9Be
collisions at beam momenta of 19A, 30A, 40A, 75A and
150A GeV/c. The energy dependence of the K±/π
± ratios
as well as of inverse slope parameters of the K± transverse
mass distributions are close to those found in inelastic p+p
reactions. The new results are compared to the world data
on p+p and Pb+Pb collisions as well as to predictions of the
Epos, Urqmd, Ampt, Phsd and Smash models
Measurements of multiplicity fluctuations of identified hadrons in inelastic proton-proton interactions at the CERN Super Proton Synchrotron
A. Acharya, H. Adhikary, A. Aduszkiewicz, K. K. Allison, E. V. Andronov, T. Antićić, V. Babkin, M. Baszczyk, S. Bhosale, A. Blondel, M. Bogomilov, A. Brandin, A. Bravar, W. Bryliński, J. Brzychczyk, M. Buryakov, O. Busygina, A. Bzdak, H. Cherif, M. Ćirković, M. Csanad, J. Cybowska, T. Czopowicz, A. Damyanova, N. Davis, M. Deliyergiyev, M. Deveaux, A. Dmitriev, W. Dominik, P. Dorosz, J. Dumarchez, R. Engel, G. A. Feofilov, L. Fields, Z. Fodor, A. Garibov, M. Gaździcki, O. Golosov, V. Golovatyuk, M. Golubeva, K. Grebieszkow, F. Guber, A. Haesler, S. N. Igolkin, S. Ilieva, A. Ivashkin, S. R. Johnson, K. Kadija, N. Kargin, E. Kashirin, M. Kiełbowicz, V. A. Kireyeu, V. Klochkov, V. I. Kolesnikov, D. Kolev, A. Korzenev, V. N. Kovalenko, M. Koziel, A. Krasnoperov, W. Kucewicz, M. Kuich, A. Kurepin, D. Larsen, A. László, T. V. Lazareva, M. Lewicki, K. Łojek, V. V. Lyubushkin, M. Maćkowiak-Pawłowska, Z. Majka, B. Maksiak, A. I. Malakhov, A. Marcinek, A. D. Marino, K. Marton, H.-J. Mathes, T. Matulewicz, V. Matveev, G. L. Melkumov, A. O. Merzlaya, B. Messerly, Ł. Mik, S. Morozov, Y. Nagai, M. Naskręt, V. Ozvenchuk, V. Paolone, O. Petukhov, I. Pidhurskyi, R. Płaneta, P. Podlaski, B. A. Popov, B. Porfy, M. Posiadała-Zezula, D. S. Prokhorova, D. Pszczel, J. Puzović, M. Ravonel, R. Renfordt, D. Röhrich, E. Rondio, M. Roth, B. T. Rumberger, M. Rumyantsev, A. Rustamov, M. Rybczynski, A. Rybicki, S. Sadhu, A. Sadovsky, I. Selyuzhenkov, A. Yu. Seryakov, P. Seyboth, M. Słodkowski, P. Staszel, G. Stefanek, J. Stepaniak, M. Strikhanov, H. Ströbele, T. Šuša, A. Taranenko, A. Tefelska, D. Tefelski, V. Tereshchenko, A. Toia, R. Tsenov, L. Turko, R. Ulrich, M. Unger, D. Uzhva, F. F. Valiev, D. Veberič, V. V. Vechernin, A. Wickremasinghe, O. Wyszyński, A. Zaitsev, E. D. Zimmerman, R. ZwaskaMeasurements of multiplicity fluctuations of
identified hadrons produced in inelastic p+p interactions
at 31, 40, 80, and 158 GeV/c beam momentum are presented.
Three different measures of multiplicity fluctuations
are used: the scaled variance ω and strongly intensive measures
and . These fluctuation measures involve second
and first moments of joint multiplicity distributions. Data
analysis is preformed using the Identity method which corrects
for incomplete particle identification. Strongly intensive
quantities are calculated in order to allowfor a direct comparison
to corresponding results on nucleus–nucleus collisions.
The results for different hadron types are shown as a function
of collision energy. A comparison with predictions of stringresonance
Monte-Carlo models: Epos, Smash and Venus,
is also presented
Spectra and mean multiplicities of π- in central 40Ar+45Sc collisions at 13A, 19A, 30A, 40A, 75A and 150A Ge V /cbeam momenta measured by the NA61/SHINE spectrometer at the CERN SPS
A. Acharya, H. Adhikary, K. K. Allison, E. V. Andronov, T. Antićić, V. Babkin, M. Baszczyk, S. Bhosale, A. Blondel, M. Bogomilov, A. Brandin, A. Bravar, W. Bryliński, J. Brzychczyk, M. Buryakov, O. Busygina, A. Bzdak, H. Cherif, M. Ćirković, M. Csanad, J. Cybowska, T. Czopowicz, A. Damyanova, N. Davis, M. Deliyergiyev, M. Deveaux, A. Dmitriev, W. Dominik, P. Dorosz, J. Dumarchez, R. Engel, G. A. Feofilov, L. Fields, Z. Fodor, A. Garibov, M. Gaździcki, O. Golosov, V. Golovatyuk, M. Golubeva, K. Grebieszkow, F. Guber, A. Haesler, S. N. Igolkin, S. Ilieva, A. Ivashkin, S. R. Johnson, K. Kadija, N. Kargin, E. Kashirin, M. Kiełbowicz, V. A. Kireyeu, V. Klochkov, V. I. Kolesnikov, D. Kolev, A. Korzenev, V. N. Kovalenko, M. Koziel, B. Kozłowski, A. Krasnoperov, W. Kucewicz, M. Kuich, A. Kurepin, D. Larsen, A. László, T. V. Lazareva, M. Lewicki, K. Łojek, V. V. Lyubushkin, M. Maćkowiak-Pawłowska, Z. Majka, B. Maksiak, A. I. Malakhov, A. Marcinek, A. D. Marino, K. Marton, H. -J. Mathes, T. Matulewicz, V. Matveev, G. L. Melkumov, A. O. Merzlaya, B. Messerly, Ł. Mik, S. Morozov, Y. Nagai, M. Naskręt, V. Ozvenchuk, V. Paolone, O. Petukhov, I. Pidhurskyi, R. Płaneta, P. Podlaski, B. A. Popov, B. Porfy, M. Posiadała-Zezula, D. S. Prokhorova, D. Pszczel, J. Puzović, M. Ravonel, R. Renfordt, D. Röhrich, E. Rondio, M. Roth, B. T. Rumberger, M. Rumyantsev, A. Rustamov, M. Rybczynski, A. Rybicki, S. Sadhu, A. Sadovsky, I. Selyuzhenkov, A. Yu. Seryakov, P. Seyboth, M. Słodkowski, P. Staszel, G. Stefanek, J. Stepaniak, M. Strikhanov, H. Ströbele, T. Šuša, A. Taranenko, A. Tefelska, D. Tefelski, V. Tereshchenko, A. Toia, R. Tsenov, L. Turko, R. Ulrich, M. Unger, D. Uzhva, F. F. Valiev, D. Veberič, V. V. Vechernin, A. Wickremasinghe, O. Wyszyński, A. Zaitsev, E. D. Zimmerman, R. ZwaskaThe physics goal of the strong interaction program
of the NA61/SHINE experiment at the CERN Super
Proton Synchrotron (SPS) is to study the phase diagram of
hadronic matter by a scan of particle production in collisions
of nuclei with various sizes at a set of energies covering
the SPS energy range. This paper presents differential inclusive
spectra of transverse momentum, transverse mass and
rapidity of π
− mesons produced in central 40Ar+45Sc collisions
at beam momenta of 13A, 19A, 30A, 40A, 75A and
150A GeV/c. Energy and system size dependence of parameters
of these distributions –mean transversemass, the inverse
slope parameter of transverse mass spectra, width of the
rapidity distribution and mean multiplicity – are presented
and discussed. Furthermore, the dependence of the ratio of
the mean number of produced pions to the mean number of
wounded nucleons on the collision energy was derived. The
results are compared to predictions of several models