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88 results on '"Adam Bzdak"'

1. A remark on the sign change of the four-particle azimuthal cumulant in small systems

Author: Adam Bzdak and Guo-Liang Ma
Subjects: Physics, QC1-999
Abstract: The azimuthal cumulants, c2{2} and c2{4}, originating from the global conservation of transverse momentum in the presence of hydro-like elliptic flow are calculated. We observe the sign change of c2{4} for small number of produced particles. This is in a qualitative agreement with the recent ATLAS measurement of multi-particle azimuthal correlations with the subevent cumulant method.
Published: 2018
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2. Correlated stopping, proton clusters and higher order proton cumulants

Author: Adam Bzdak, Volker Koch, and Vladimir Skokov
Subjects: Central Collision, Factorial Moment, High Order Cumulants, Star Data, Fourth Order Cumulant, Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract We investigate possible effects of correlations between stopped nucleons on higher order proton cumulants at low energy heavy-ion collisions. We find that fluctuations of the number of wounded nucleons $$N_{\mathrm {part}}$$ N part lead to rather nontrivial dependence of the correlations on the centrality; however, this effect is too small to explain the large and positive four-proton correlations found in the preliminary data collected by the STAR collaboration at $$\sqrt{s}=7.7$$ s = 7.7 GeV. We further demonstrate that, by taking into account additional proton clustering, we are able to qualitatively reproduce the preliminary experimental data. We speculate that this clustering may originate either from collective/multi-collision stopping which is expected to be effective at lower energies or from a possible first-order phase transition, or from (attractive) final state interactions. To test these ideas we propose to measure a mixed multi-particle correlation between stopped protons and a produced particle (e.g. pion, antiproton).
Published: 2017
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3. Multi-particle correlations in transverse momenta from statistical clusters

Author: Andrzej Bialas and Adam Bzdak
Subjects: Physics, QC1-999
Abstract: We evaluate n-particle (n=2,3,4,5) transverse momentum correlations for pions and kaons following from the decay of statistical clusters. These correlation functions could provide strong constraints on a possible existence of thermal clusters in the process of particle production.
Published: 2016
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4. Rapidity dependence of elliptic and triangular flow in proton–nucleus collisions from collective dynamics

Author: Piotr Bożek, Adam Bzdak, and Guo-Liang Ma
Subjects: Physics, QC1-999
Abstract: The rapidity dependence of elliptic, v2, and triangular, v3, flow coefficients in proton–nucleus (p+A) collisions is predicted in hydrodynamics and in a multi-phase transport model (AMPT). We find that vn (n=2,3) on a nucleus side is significantly larger than on a proton side and the ratio between the two, vnPb/vnp, weakly depends on the transverse momentum of produced particles.
Published: 2015
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5. Long-range azimuthal correlations in proton–proton and proton–nucleus collisions from the incoherent scattering of partons

Author: Guo-Liang Ma and Adam Bzdak
Subjects: Physics, QC1-999
Abstract: We show that the incoherent elastic scattering of partons, as present in a multi-phase transport model (AMPT), with a modest parton–parton cross-section of σ=1.5–3 mb, naturally explains the long-range two-particle azimuthal correlation as observed in proton–proton and proton–nucleus collisions at the Large Hadron Collider.
Published: 2014
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6. Cumulants from short-range correlations and baryon number conservation at next-to-leading order

Author: Michał Barej and Adam Bzdak
Subjects: Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Nuclear Theory, FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract: We calculate the baryon number cumulants within acceptance with short-range correlations and global baryon number conservation in terms of cumulants in the whole system without baryon conservation. We extract leading and next-to-leading order terms of the large baryon number limit approximation. Our results extend the findings of Refs. [1,2]. These approximations are checked to be very close to the exact results., 17 pages, 2 figures
Published: 2023

7. Factorial cumulants from short-range correlations and global baryon number conservation

Author: Michał Barej and Adam Bzdak
Subjects: Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Nuclear Theory, High Energy Physics::Phenomenology, Physics::Accelerator Physics, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract: We calculate the baryon factorial cumulants assuming arbitrary short-range correlations and the global baryon number conservation. The general factorial cumulant generating function is derived. Various relations between factorial cumulants subjected to baryon number conservation and the factorial cumulants without this constraint are presented. We observe that for $n$-th factorial cumulant, the short-range correlations of more than $n$ particles are suppressed with the increasing number of particles. The recently published [1] relations between the cumulants in a finite acceptance with global baryon conservation and the grand-canonical susceptibilities are reproduced., Comment: 18 pages, 3 figures
Published: 2022
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8. Multiparticle azimuthal cumulants from transverse momentum conservation and collective flow

Author: Mu-Ting Xie, Guo-Liang Ma, and Adam Bzdak
Subjects: Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Nuclear Theory, FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: We calculate the $n$th order of $2k$-particle azimuthal cumulants $c_n\{2k\}$ based on transverse momentum conservation (TMC) and collective flow $v_n$(n=2,3). We demonstrate that the TMC effect only leads to a nonzero $c_n\{2k\}$ with the sign of $(-1)^{nk}$ and the magnitude inversely proportional to $(N-2k)^{nk}$. The interplay between TMC and collective flow can change the signs of $c_2\{4\}$, $c_3\{2\}$ and $c_3\{4\}$ at some values of multiplicity $N$, which could provide a good probe to study the onset of collectivity and search for the substructure of proton in small colliding systems., Comment: 11 pages, 3 figures, final published version
Published: 2022
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9. Measurements of multiplicity fluctuations of identified hadrons in inelastic proton–proton interactions at the CERN Super Proton Synchrotron

Author: V. Babkin, M. Ravonel, H. J. Mathes, Miroslaw Marek Kielbowicz, Markus Roth, V. Paolone, Antoni Aduszkiewicz, A. Blondel, O. Busygina, V. I. Kolesnikov, E. Rondio, H. Ströbele, E. D. Zimmerman, M. Lewicki, J. Cybowska, D. Tefelski, W. Bryliński, K. Wojcik, N. Kargin, V. A. Kireyeu, A. Bravar, Vitalii Ozvenchuk, M. Kuich, F.F. Valiev, A. Sadovsky, Ł. Mik, A. Marcinek, Rainer Arno Ernst Renfordt, O. Golosov, O. Petukhov, Z. Fodor, A. Zaitsev, Andras Laszlo, A. Damyanova, M. Rumyantsev, O. Wyszyński, P. Staszel, V. Tereshchenko, Darko Veberič, M. Ćirković, Alexander Malakhov, Michal Koziel, M. Posiadala-Zezula, Alexey Kurepin, Dag Larsen, A. Rustamov, M. Słodkowski, J. Brzychczyk, Ralph Engel, Maciej Rybczyński, T. Antičić, S. R. Johnson, B. Maksiak, H. Adhikary, T. Susa, D. S. Prokhorova, D. Kolev, A. Korzenev, L. Fields, A. Dmitriev, K. K. Allison, A. V. Brandin, Dieter Røhrich, B. A. Popov, I. Pidhurskyi, D. Pszczel, Viktor Matveev, B. Messerly, Ludwik Turko, P. Dorosz, H. Cherif, B. Porfy, B. T. Rumberger, T. Matulewicz, A. Taranenko, Z. Majka, Andrzej Rybicki, M. Deliyergiyev, Katarzyna Grebieszkow, S. Puławski, P. Seyboth, A. O. Merzlaya, J. Stepaniak, Marek Gaździcki, A. Haesler, Vladimir Vechernin, S. V. Morozov, S. Kowalski, I. Selyuzhenkov, A. Wickremasinghe, G. A. Feofilov, K. Schmidt, N. Davis, K. Łojek, S. Sadhu, V. Klochkov, Vladimir Kovalenko, R. Zwaska, Kreso Kadija, Wojciech Kucewicz, M. Buryakov, Evgeny Andronov, M. Maćkowiak-Pawłowska, K. Marton, E. Kashirin, A. Yu. Seryakov, Ralf Ulrich, Mateusz Baszczyk, M.B. Golubeva, P. Podlaski, Adam Bzdak, M. Unger, J. Puzović, R. Tsenov, V. V. Lyubushkin, G. L. Melkumov, A. D. Marino, A. Tefelska, M. Strikhanov, S. Ilieva, Alberica Toia, V.M. Golovatyuk, A. Ivashkin, Mate Csanad, Tatiana Lazareva, Michael Deveaux, R. Płaneta, M. Naskręt, M. Bogomilov, G. Stefanek, F.F. Guber, S. Bhosale, Tobiasz Czopowicz, J. Dumarchez, A. Acharya, D. Uzhva, Alexey Krasnoperov, Y. Nagai, S.N. Igolkin, W. Dominik, and A. Garibov
Subjects: Physics, Large Hadron Collider, Physics and Astronomy (miscellaneous), Proton, 010308 nuclear & particles physics, Hadron, Multiplicity (mathematics), 01 natural sciences, Super Proton Synchrotron, Omega, Particle identification, Momentum, Nuclear physics, 0103 physical sciences, 010306 general physics, Engineering (miscellaneous)
Abstract: Measurements of multiplicity fluctuations of identified hadrons produced in inelastic p+p interactions at 31, 40, 80, and 158 $$\text {Ge}\text {V}/c$$ Ge / c beam momentum are presented. Three different measures of multiplicity fluctuations are used: the scaled variance $$\omega $$ ω and strongly intensive measures $$\Sigma $$ Σ and $$\Delta $$ Δ . 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 allow for 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 string-resonance Monte-Carlo models: Epos, Smash and Venus, is also presented.
Published: 2021
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10. Spectra and mean multiplicities of $$\pi ^{-}$$ in central $${}^{40}$$Ar+$${}^{45}$$Sc collisions at 13A, 19A, 30A, 40A, 75A and 150$$A\,\text{ Ge }\text{ V }\!/\!\textit{c}$$ beam momenta measured by the NA61/SHINE spectrometer at the CERN SPS

Author: Andrzej Rybicki, Vitalii Ozvenchuk, M. Kuich, B. Maksiak, Alexey Kurepin, Katarzyna Grebieszkow, A. Sadovsky, Z. Majka, M. Unger, Miroslaw Marek Kielbowicz, M. Słodkowski, A. Marcinek, D. Tefelski, M. Posiadala-Zezula, D. Uzhva, A. Haesler, Vladimir Vechernin, V. I. Kolesnikov, J. Cybowska, Alexey Krasnoperov, P. Staszel, M. Naskręt, M. Bogomilov, B. Messerly, A. Rustamov, S. Kowalski, P. Seyboth, R. Tsenov, A. D. Marino, H. Adhikary, A. O. Merzlaya, D. Kolev, G. Stefanek, O. Busygina, M. Lewicki, K. Marton, A. Blondel, F.F. Guber, W. Bryliński, E. Rondio, A. Garibov, M. Maćkowiak-Pawłowska, S. Puławski, N. Davis, A. Ivashkin, Mateusz Baszczyk, A. Yu. Seryakov, V. Babkin, H. Ströbele, B. Porfy, P. Podlaski, B. T. Rumberger, A. Wickremasinghe, Ł. Mik, Kreso Kadija, M. Buryakov, S. Sadhu, Rainer Arno Ernst Renfordt, K. Wojcik, D. S. Prokhorova, S. Bhosale, Ludwik Turko, P. Dorosz, N. Kargin, A. Bravar, V. Tereshchenko, V. Paolone, H. J. Mathes, Tobiasz Czopowicz, Marek Gaździcki, J. Puzović, J. Brzychczyk, Alexander Malakhov, Michael Deveaux, Ralph Engel, Alberica Toia, V.M. Golovatyuk, Markus Roth, J. Dumarchez, V. A. Kireyeu, T. Susa, Adam Bzdak, Dieter Røhrich, A. Dmitriev, O. Petukhov, M. Rumyantsev, O. Wyszyński, D. Pszczel, A. Acharya, Ralf Ulrich, M. Ravonel, A. Tefelska, B. A. Popov, E. D. Zimmerman, S. Ilieva, Y. Nagai, A. V. Brandin, M. Strikhanov, K. K. Allison, M. Ćirković, H. Cherif, I. Selyuzhenkov, B. Kozłowski, O. Golosov, A. Damyanova, Mate Csanad, S. V. Morozov, A. Zaitsev, Andras Laszlo, I. Pidhurskyi, Tatiana Lazareva, Wojciech Kucewicz, Michal Koziel, E. Kashirin, Evgeny Andronov, G. A. Feofilov, R. Płaneta, M.B. Golubeva, Viktor Matveev, V. V. Lyubushkin, G. L. Melkumov, Maciej Rybczyński, T. Antičić, F.F. Valiev, J. Stepaniak, Darko Veberič, K. Schmidt, K. Łojek, S.N. Igolkin, W. Dominik, M. Deliyergiyev, S. R. Johnson, A. Korzenev, L. Fields, T. Matulewicz, A. Taranenko, Z. Fodor, Dag Larsen, V. Klochkov, Vladimir Kovalenko, and R. Zwaska
Subjects: Physics, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, Hadron, Inverse, 01 natural sciences, Super Proton Synchrotron, Nuclear physics, 0103 physical sciences, Transverse mass, Rapidity, Production (computer science), 010306 general physics, Nucleon, Engineering (miscellaneous)
Abstract: The 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 $$\pi ^{-}$$ π - mesons produced in central$${}^{40}$$ 40 Ar+$${}^{45}$$ 45 Sc collisions at beam momenta of 13A, 19A, 30A, 40A, 75A and 150$$A\,\text{ Ge }\text{ V }\!/\!\textit{c}$$ A Ge V / c . Energy and system size dependence of parameters of these distributions – mean transverse mass, 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.
Published: 2021
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11. Erratum to: Measurements of $$\pi ^-$$ production in $$^7\hbox {Be}+{}^9\hbox {Be}$$ collisions at beam momenta from 19A to 150$$A\,\text{ Ge } \text{ V }/c$$ in the NA61/SHINE experiment at the CERN SPS

Author: H. Cherif, D. Kolev, B. Maksiak, D. Pszczel, Z. Majka, M. Ravonel, A. O. Merzlaya, V. Tereshchenko, F.F. Valiev, Dieter Røhrich, B. Porfy, B. T. Rumberger, Maciej Rybczyński, T. Antičić, E. Rondio, K. Wojcik, D. Uzhva, Darko Veberič, N. Kargin, Alexey Krasnoperov, A. Tefelska, V. A. Kireyeu, Z. Fodor, J. Stepaniak, Andras Laszlo, Miroslaw Marek Kielbowicz, A. V. Brandin, Ralf Ulrich, K. Łojek, Adam Bzdak, S. Puławski, O. Golosov, M. Strikhanov, Michal Koziel, S. Ilieva, Dag Larsen, A. Marcinek, S.N. Igolkin, J. Brzychczyk, H. Ströbele, O. Busygina, M. Posiadala-Zezula, W. Dominik, G. A. Feofilov, Ralph Engel, A. Wickremasinghe, Alberica Toia, K. K. Allison, M. Lewicki, T. Susa, V.M. Golovatyuk, Ludwik Turko, S. Sadhu, V. Paolone, Mate Csanad, W. Bryliński, A. Dmitriev, P. Dorosz, Wojciech Kucewicz, S. V. Morozov, Rainer Arno Ernst Renfordt, E. D. Zimmerman, Tatiana Lazareva, P. Seyboth, H. J. Mathes, B. A. Popov, A. Blondel, E. Kashirin, P. Staszel, M. Słodkowski, A. Sadovsky, N. Davis, Antoni Aduszkiewicz, R. Płaneta, Ł. Mik, St Mrówczyński, I. Selyuzhenkov, Kreso Kadija, V. V. Lyubushkin, Evgeny Andronov, A. Acharya, G. L. Melkumov, K. Schmidt, A. Rustamov, K. Marton, H. Adhikary, J. Puzović, M.B. Golubeva, A. Yu. Seryakov, B. Messerly, Katarzyna Grebieszkow, S. R. Johnson, Y. Nagai, M. Buryakov, A. Korzenev, L. Fields, Zbigniew Wlodarczyk, O. Petukhov, V. Klochkov, Vladimir Kovalenko, R. Zwaska, A. Damyanova, M. Ćirković, T. Matulewicz, A. Taranenko, Viktor Matveev, M. Deliyergiyev, Vitalii Ozvenchuk, D. S. Prokhorova, M. Kuich, Alexey Kurepin, Andrzej Rybicki, M. Unger, Michael Deveaux, S. Bhosale, A. Ivashkin, Tobiasz Czopowicz, J. Dumarchez, F.F. Guber, M. Naskręt, M. Bogomilov, G. Stefanek, D. Tefelski, A. Garibov, V. Babkin, A. Haesler, Vladimir Vechernin, S. Kowalski, M. Maćkowiak-Pawłowska, Mateusz Baszczyk, P. Podlaski, Markus Roth, V. I. Kolesnikov, J. Cybowska, Marek Gaździcki, M. Rumyantsev, O. Wyszyński, A. Bravar, Alexander Malakhov, R. Tsenov, and A. D. Marino
Subjects: Physics, Nuclear physics, Large Hadron Collider, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, 0103 physical sciences, 010303 astronomy & astrophysics, 01 natural sciences, Engineering (miscellaneous), Beam (structure)
Abstract: In this erratum, we clarify the details of the comparison of
Published: 2021
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12. Measurement of the production cross section of 31 GeV/c protons on carbon via beam attenuation in a 90-cm-long target

Author: Piotr Dorosz, H. Ströbele, Andrzej Rybicki, V.M. Golovatyuk, Mate Csanad, G. A. Feofilov, Tatiana Lazareva, M. Unger, S. Bhosale, A. Tefelska, Miroslaw Marek Kielbowicz, Maciej Rybczyński, T. Antičić, O. Busygina, M. Lewicki, W. Bryliński, Michael Deveaux, Tobiasz Czopowicz, M. Rumyantsev, A. Garibov, V. Babkin, H. J. Mathes, J. Brzychczyk, B. A. Popov, M. Słodkowski, S. Ilieva, J. Dumarchez, P. Staszel, B. Porfy, B. T. Rumberger, Antoni Aduszkiewicz, E. Rondio, K. Wojcik, N. Kargin, V. A. Kireyeu, M. Ravonel, J. Stepaniak, T. Susa, A. Dmitriev, Markus Roth, O. Golosov, K. Schmidt, Alberica Toia, R. Płaneta, A. Damyanova, Z. Majka, K. Łojek, A. Marcinek, F.F. Guber, O. Petukhov, Vitalii Ozvenchuk, A. Ivashkin, S.N. Igolkin, W. Dominik, A. V. Brandin, S. R. Johnson, D. Kolev, D. Pszczel, B. Maksiak, M. Kuich, S. Puławski, V. Tereshchenko, Sergey V. Morozov, Evgeny Andronov, Alexey Kurepin, Ilya Selyuzhenkov, A. Zaitsev, A. Korzenev, J. Puzović, D. Tefelski, Samrangy Sadhu, Z. Fodor, M. Ćirković, Ralf Ulrich, A. O. Merzlaya, A. Wickremasinghe, M.B. Golubeva, Andras Laszlo, T. Matulewicz, B. Kozłowski, F.F. Valiev, M. Posiadala-Zezula, A. Taranenko, K. K. Allison, M. Strikhanov, Ł. Mik, Michal Koziel, Darko Veberič, Dieter Røhrich, M. Naskręt, Katarzyna Grebieszkow, Marek Gaździcki, M. Bogomilov, G. Stefanek, M. Buryakov, D. S. Prokhorova, Dag Larsen, O. Wyszyński, B. Messerly, A. Haesler, M. Pavin, V. Klochkov, Vladimir Kovalenko, Vladimir Vechernin, R. Zwaska, Wojciech Kucewicz, S. Kowalski, E. Kashirin, V. I. Kolesnikov, J. Cybowska, M. Maćkowiak-Pawłowska, V. V. Lyubushkin, G. L. Melkumov, Mateusz Baszczyk, P. Podlaski, V. Matveev, A. Blondel, R. Engel, K. Marton, A. Yu. Seryakov, V. Paolone, A. Bravar, E. D. Zimmerman, R. Tsenov, A. D. Marino, Alexander Malakhov, D. Uzhva, Alexey Krasnoperov, Y. Nagai, A. Sadovsky, A. Acharya, A. Rustamov, H. Adhikary, Ludwik Turko, M. Deliyergiyev, P. Seyboth, N. Davis, L. Fields, Kreso Kadija, Adam Bzdak, H. Cherif, and Rainer Arno Ernst Renfordt
Subjects: Physics, Spectrometer, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Attenuation, Hadron, Flux, 01 natural sciences, 7. Clean energy, Nuclear physics, Cross section (physics), 0103 physical sciences, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, 010306 general physics, Neutrino oscillation, Beam (structure)
Abstract: The production cross section of 30.92 GeV/c protons on carbon is measured by the NA61/SHINE spectrometer at the CERN SPS by means of beam attenuation in a copy (replica) of the 90-cm-long target of the T2K neutrino oscillation experiment. The employed method for direct production cross-section estimation minimizes model corrections for elastic and quasi-elastic interactions. The obtained production cross section is σ$_{prod}$ = 227.6 ± 0.8(stat)$\frac{+1.9}{−3.2}$(sys) − 0.8(mod) mb. It is in agreement with previous NA61/SHINE results obtained with a thin carbon target, while providing improved precision with a total fractional uncertainty of less than 2%. This direct measurement is performed to reduce the uncertainty on the T2K neutrino flux prediction associated with the re-weighting of the interaction rate of neutrino-yielding hadrons.
Published: 2021
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13. Measurements of $\pi^\pm$, $K^\pm$, $p$ and $\bar{p}$ spectra in $^7$Be+$^9$Be collisions at beam momenta from 19$A$ to 150$A$ GeV/$c$ with the NA61/SHINE spectrometer at the CERN SPS

Author: A. Tefelska, S. Ilieva, M. Ravonel, M. Rumyantsev, O. Wyszyński, B. Maksiak, A. O. Merzlaya, Andrzej Rybicki, A. Sadovsky, P. Seyboth, E. Rondio, Wojciech Kucewicz, S. Puławski, B. A. Popov, A. Bravar, K. Wojcik, N. Kargin, Ralf Ulrich, D. S. Prokhorova, H. J. Mathes, M. Naskręt, Z. Majka, N. Davis, H. Ströbele, E. Kashirin, Antoni Aduszkiewicz, D. Tefelski, A. Wickremasinghe, V. A. Kireyeu, H. Cherif, Y. Nagai, V. Paolone, M. Strikhanov, M. Bogomilov, G. Stefanek, S. Sadhu, M. Buryakov, E. D. Zimmerman, Kreso Kadija, V. I. Kolesnikov, J. Cybowska, M. Unger, A. V. Brandin, A. Rustamov, A. Garibov, Mate Csanad, F.F. Guber, Vitalii Ozvenchuk, Zbigniew Wlodarczyk, V. Babkin, H. Adhikary, Alberica Toia, M. Kuich, V.M. Golovatyuk, O. Petukhov, Alexander Malakhov, Tatiana Lazareva, S. V. Morozov, V. V. Lyubushkin, I. Selyuzhenkov, Adam Bzdak, K. Schmidt, A. Ivashkin, D. Pszczel, Rainer Arno Ernst Renfordt, A. Acharya, M. Ćirković, G. L. Melkumov, M. Słodkowski, Markus Roth, Ludwik Turko, B. Kozłowski, Alexey Kurepin, P. Dorosz, F.F. Valiev, R. Płaneta, Marek Gaździcki, Evgeny Andronov, St Mrówczyński, D. Uzhva, Alexey Krasnoperov, K. Marton, A. Yu. Seryakov, Z. Fodor, Katarzyna Grebieszkow, Darko Veberič, M.B. Golubeva, Michael Deveaux, Miroslaw Marek Kielbowicz, B. Messerly, Dag Larsen, J. Brzychczyk, Ralph Engel, O. Busygina, M. Lewicki, P. Staszel, K. K. Allison, W. Bryliński, T. Susa, O. Golosov, Andras Laszlo, A. Dmitriev, D. Kolev, J. Puzović, A. Blondel, Michal Koziel, Ł. Mik, B. Porfy, B. T. Rumberger, G. A. Feofilov, A. Marcinek, M. Posiadala-Zezula, R. Tsenov, V. Tereshchenko, Dieter Røhrich, A. Haesler, Vladimir Vechernin, S. Kowalski, M. Maćkowiak-Pawłowska, Mateusz Baszczyk, P. Podlaski, A. D. Marino, Maciej Rybczyński, T. Antičić, S. Bhosale, S. R. Johnson, Tobiasz Czopowicz, A. Korzenev, L. Fields, J. Dumarchez, T. Matulewicz, A. Taranenko, J. Stepaniak, K. Łojek, S.N. Igolkin, W. Dominik, A. Damyanova, Viktor Matveev, M. Deliyergiyev, V. Klochkov, Vladimir Kovalenko, R. Zwaska, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), and NA61/SHINE
Subjects: NA61, matter [hadron], Physics and Astronomy (miscellaneous), matter: interaction, Hadron, Inverse, momentum spectrum [transverse momentum], momentum [beam], 7. Clean energy, 01 natural sciences, Spectral line, High Energy Physics - Experiment, transverse momentum: momentum spectrum, K: multiplicity, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], anti-p: multiplicity, scattering [nucleus nucleus], Nuclear Experiment, Physics, nucleus nucleus: scattering, Super Proton Synchrotron, multiplicity [anti-p], beam: momentum, slope, Transverse mass, Production (computer science), multiplicity [pi], Particle Physics - Experiment, deconfinement, CERN Lab, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], yield [particle], energy dependence, Nuclear physics, mass spectrum: transverse, 0103 physical sciences, Nuclear Physics - Experiment, ddc:530, Rapidity, 010306 general physics, Engineering (miscellaneous), particle: yield, p: multiplicity, pi: multiplicity, 010308 nuclear & particles physics, CERN SPS, beryllium, proton synchrotron, hadron: matter, rapidity spectrum, transverse [mass spectrum], interaction [matter], multiplicity [K], spectrometer, multiplicity [p], Bar (unit), experimental results
Abstract: The European physical journal / C 81(1), 73 (1-38) (2021). doi:10.1140/epjc/s10052-020-08733-x, The 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 $\pi ^\pm $, $K^\pm $, p and $\bar{p}$ produced in the 20% most central$^7$Be+$^9$Be collisions at beam momenta of 19A, 30A, 40A, 75A and 150A ${\mathrm{Ge} \mathrm{V}}\!/\!c$. The energy dependence of the $K^\pm $/$\pi ^\pm $ ratios as well as of inverse slope parameters of the $K^\pm $ 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., Published by Springer, Heidelberg
Published: 2021
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14. Measurements of $$\pi ^-$$ production in $$^7$$Be + $$^9$$Be collisions at beam momenta from 19A to 150$$A\,\text{ GeV }\!/\!c$$ in the NA61/SHINE experiment at the CERN SPS

Author: Vitalii Ozvenchuk, M. Kuich, H. Ströbele, D. Tefelski, Adam Bzdak, H. Cherif, A. Ivashkin, S. R. Johnson, A. Garibov, P. Seyboth, D. S. Prokhorova, A. V. Brandin, V. Babkin, N. Davis, K. K. Allison, Katarzyna Grebieszkow, Michael Deveaux, F.F. Valiev, Alexey Kurepin, S. Bhosale, Kreso Kadija, A. Korzenev, L. Fields, Mate Csanad, D. Pszczel, M. Ravonel, B. Porfy, B. T. Rumberger, Marek Gaździcki, S. V. Morozov, B. A. Popov, S. Puławski, H. J. Mathes, G. A. Feofilov, A. Damyanova, J. Brzychczyk, Ralph Engel, Tobiasz Czopowicz, Antoni Aduszkiewicz, K. Marton, Y. Nagai, A. Yu. Seryakov, T. Susa, M. Rumyantsev, O. Wyszyński, E. Rondio, Markus Roth, T. Matulewicz, Tatiana Lazareva, R. Tsenov, J. Dumarchez, K. Wojcik, N. Kargin, Rainer Arno Ernst Renfordt, A. Wickremasinghe, A. Taranenko, Ludwik Turko, D. Kolev, A. Dmitriev, A. D. Marino, M. Maćkowiak-Pawłowska, V. A. Kireyeu, P. Dorosz, Viktor Matveev, Zbigniew Wlodarczyk, A. Bravar, S. Sadhu, Mateusz Baszczyk, B. Messerly, I. Selyuzhenkov, A. Blondel, Alexander Malakhov, Z. Fodor, B. Maksiak, J. Stepaniak, Evgeny Andronov, Darko Veberič, A. Sadovsky, Dag Larsen, Andrzej Rybicki, A. Acharya, M. Deliyergiyev, M.B. Golubeva, P. Podlaski, R. Płaneta, Ł. Mik, St Mrówczyński, Alberica Toia, V.M. Golovatyuk, K. Łojek, M. Naskręt, V. I. Kolesnikov, J. Cybowska, D. Uzhva, Z. Majka, Miroslaw Marek Kielbowicz, A. O. Merzlaya, Alexey Krasnoperov, M. Słodkowski, V. Paolone, S.N. Igolkin, W. Dominik, J. Puzović, O. Busygina, Ralf Ulrich, E. D. Zimmerman, M. Bogomilov, M. Lewicki, A. Rustamov, A. Tefelska, W. Bryliński, M. Strikhanov, V. Tereshchenko, P. Staszel, H. Adhikary, G. Stefanek, K. Schmidt, O. Petukhov, S. Ilieva, Maciej Rybczyński, T. Antičić, A. Marcinek, M. Unger, V. Klochkov, Vladimir Kovalenko, O. Golosov, Dieter Røhrich, R. Zwaska, F.F. Guber, M. Posiadala-Zezula, M. Ćirković, A. Haesler, Vladimir Vechernin, S. Kowalski, M. Buryakov, Wojciech Kucewicz, E. Kashirin, Andras Laszlo, Michal Koziel, V. V. Lyubushkin, and G. L. Melkumov
Subjects: Physics, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, Hadron, 01 natural sciences, Super Proton Synchrotron, Particle identification, Nuclear physics, Pion, 0103 physical sciences, Transverse mass, Rapidity, 010306 general physics, Nucleon, Engineering (miscellaneous)
Abstract: The NA61/SHINE collaboration studies at the CERN Super Proton Synchrotron (SPS) the onset of deconfinement in hadronic matter by the measurement 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 and mean multiplicities of$$\pi ^{-}$$π-mesons produced in the 5% mostcentral$$^7$$7Be +$$^9$$9Be collisions at beam momenta of 19A, 30A, 40A, 75Aand 150$$A\,\text{ GeV }\!/\!c$$AGeV/cobtained by the so-called$$h^-$$h-method which does not require any particle identification. The shape of the transverse mass spectra differs from the shapes measured incentralPb + Pb collisions and inelasticp+pinteractions. The normalized width of the rapidity distribution decreases with increasing collision energy and is in between the results for inelastic nucleon–nucleon andcentralPb + Pb collisions. The mean multiplicity of pions per wounded nucleon incentral$$^7$$7Be +$$^9$$9Be collisions is close to that incentralPb + Pb collisions up to 75$$A\,\text{ GeV }\!/\!c$$AGeV/c. However, at the top SPS energy the result lies between those for nucleon–nucleon and Pb + Pb interactions. The results are discussed in the context of predictions for the onset of deconfinement at the CERN SPS collision energies.
Published: 2020
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15. Measurements of $${\Xi }{^-} $$ and $$\overline{\Xi }{^+} $$ production in proton–proton interactions at $$\sqrt{s_{NN}}$$ = 17.3 $$\hbox {Ge}\hbox {V}$$ in the NA61/SHINE experiment

Author: Mate Csanad, Tatiana Lazareva, M. Słodkowski, R. Płaneta, St Mrówczyński, A. Blondel, M. Ravonel, Ralf Ulrich, V. I. Kolesnikov, J. Cybowska, M. Strikhanov, Y. Nagai, D. Kolev, Ł. Mik, Vitalii Ozvenchuk, V. Klochkov, Vladimir Kovalenko, S. Puławski, R. Zwaska, B. Maksiak, V. Tereshchenko, A. Damyanova, D. S. Prokhorova, M. Kuich, A. Wickremasinghe, Z. Majka, Zbigniew Wlodarczyk, B. Porfy, P. Seyboth, B. T. Rumberger, D. Uzhva, A. V. Brandin, Viktor Matveev, Alexey Krasnoperov, A. Sadovsky, A. O. Merzlaya, Marek Gaździcki, N. Davis, M. Deliyergiyev, A. Tefelska, Kreso Kadija, Dieter Røhrich, S. V. Morozov, M. Rumyantsev, O. Wyszyński, H. J. Mathes, J. Brzychczyk, Z. Fodor, S. Ilieva, Andrzej Rybicki, Antoni Aduszkiewicz, Ralph Engel, J. Stepaniak, F.F. Guber, A. Rustamov, T. Susa, A. Dmitriev, K. Łojek, A. Haesler, Dag Larsen, Vladimir Vechernin, S.N. Igolkin, W. Dominik, S. Kowalski, Katarzyna Grebieszkow, Ludwik Turko, Adam Bzdak, P. Dorosz, Maciej Rybczyński, T. Antičić, M. Naskręt, V. Paolone, S. R. Johnson, M. Bogomilov, G. Stefanek, A. Korzenev, L. Fields, E. D. Zimmerman, M. Unger, S. Bhosale, M. Maćkowiak-Pawłowska, T. Matulewicz, A. Taranenko, Tobiasz Czopowicz, Mateusz Baszczyk, J. Dumarchez, P. Podlaski, A. Ivashkin, Michael Deveaux, P. Staszel, Alberica Toia, V.M. Golovatyuk, D. Pszczel, B. Messerly, Alexey Kurepin, O. Petukhov, H. Ströbele, M. Ćirković, D. Tefelski, M. Buryakov, Evgeny Andronov, A. Garibov, V. Babkin, F.F. Valiev, J. Puzović, M.B. Golubeva, Markus Roth, Darko Veberič, B. A. Popov, E. Rondio, K. Wojcik, N. Kargin, V. A. Kireyeu, Wojciech Kucewicz, I. Selyuzhenkov, E. Kashirin, A. Marcinek, M. Posiadala-Zezula, O. Golosov, V. V. Lyubushkin, R. Tsenov, G. L. Melkumov, A. D. Marino, A. Bravar, Miroslaw Marek Kielbowicz, Alexander Malakhov, O. Busygina, M. Lewicki, W. Bryliński, Rainer Arno Ernst Renfordt, K. Marton, A. Yu. Seryakov, H. Cherif, G. A. Feofilov, Andras Laszlo, K. Schmidt, and Michal Koziel
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Hyperon, Strangeness, 01 natural sciences, Spectral line, Phase space, 0103 physical sciences, Transverse momentum, Rapidity, Multiplicity (chemistry), 010306 general physics, Nucleon, Engineering (miscellaneous)
Abstract: The production of $$\Xi (1321)^{-}$$ Ξ ( 1321 ) - and $$\overline{\Xi }(1321)^{+}$$ Ξ ¯ ( 1321 ) + hyperons in inelastic p+p interactions is studied in a fixed target experiment at a beam momentum of 158 $$\hbox {Ge}\hbox {V}\!/\!c$$ Ge / c . Double differential distributions in rapidity $${y}$$ y and transverse momentum $$p_{T}$$ p T are obtained from a sample of 33M inelastic events. They allow to extrapolate the spectra to full phase space and to determine the mean multiplicity of both $${\Xi }{^-} $$ Ξ - and $$\overline{\Xi }{^+} $$ Ξ ¯ + . The rapidity and transverse momentum spectra are compared to transport model predictions. The $${\Xi }{^-} $$ Ξ - mean multiplicity in inelastic p+p interactions at 158 $$\hbox {Ge}\hbox {V}\!/\!c$$ Ge / c is used to quantify the strangeness enhancement in A+A collisions at the same centre-of-mass energy per nucleon pair.
Published: 2020
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16. Factorial cumulants from global baryon number conservation

Author: Michał Barej and Adam Bzdak
Subjects: Factorial, Particle physics, Proton, Nuclear Theory, Sixth order, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Physics::Atomic Physics, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Cumulant, Nuclear theory, Physics, 010308 nuclear & particles physics, High Energy Physics - Phenomenology, Antiproton, Physics::Accelerator Physics, High Energy Physics::Experiment, Baryon number
Abstract: The proton, antiproton and mixed proton-antiproton factorial cumulants originating from the global conservation of baryon number are calculated analytically up to the sixth order. Our results can be directly tested in experiments., 15 pages, 3 figures
Published: 2020

17. Two-particle correlations in azimuthal angle and pseudorapidity in central $^7$Be+$^9$Be collisions at the CERN Super Proton Synchrotron

Author: Z. Fodor, M. Maćkowiak-Pawłowska, K. Marton, O. Petukhov, A. Yu. Seryakov, Dag Larsen, P. Seyboth, Mateusz Baszczyk, Z. Majka, N. Davis, D. Uzhva, Alexey Krasnoperov, P. Podlaski, M. Ćirković, Kreso Kadija, A. Sadovsky, G. A. Feofilov, S. R. Johnson, A. Korzenev, L. Fields, T. Matulewicz, A. Taranenko, Alexey Kurepin, E. Rondio, K. Wojcik, N. Kargin, V. A. Kireyeu, O. Golosov, H. Cherif, M. Ravonel, A. Rustamov, Katarzyna Grebieszkow, Vitalii Ozvenchuk, Marek Gaździcki, A. V. Brandin, V. Tereshchenko, Andras Laszlo, M. Kuich, J. Stepaniak, K. Łojek, Evgeny Andronov, Miroslaw Marek Kielbowicz, O. Busygina, M. Lewicki, B. Maksiak, B. A. Popov, F.F. Guber, Michal Koziel, Wojciech Kucewicz, V. I. Kolesnikov, J. Cybowska, A. Garibov, Dieter Røhrich, J. Brzychczyk, A. Ivashkin, Ralph Engel, S.N. Igolkin, W. Dominik, Ludwik Turko, E. Kashirin, M.B. Golubeva, W. Bryliński, Rainer Arno Ernst Renfordt, B. Porfy, V. Babkin, V. Paolone, V. Klochkov, Vladimir Kovalenko, H. Ströbele, R. Zwaska, B. Messerly, P. Dorosz, S. V. Morozov, B. T. Rumberger, Mate Csanad, S. Puławski, T. Susa, E. D. Zimmerman, A. O. Merzlaya, H. J. Mathes, A. Haesler, Vladimir Vechernin, A. Dmitriev, Tatiana Lazareva, A. Damyanova, Adam Bzdak, M. Rumyantsev, O. Wyszyński, S. Kowalski, V. V. Lyubushkin, D. Kolev, Antoni Aduszkiewicz, M. Naskręt, A. Blondel, K. Schmidt, M. Buryakov, Maciej Rybczyński, T. Antičić, A. Tefelska, Markus Roth, Alberica Toia, V.M. Golovatyuk, G. L. Melkumov, M. Bogomilov, G. Stefanek, F.F. Valiev, Viktor Matveev, A. Wickremasinghe, Y. Nagai, I. Selyuzhenkov, Darko Veberič, S. Bhosale, R. Płaneta, M. Deliyergiyev, St Mrówczyński, Ł. Mik, Tobiasz Czopowicz, Zbigniew Wlodarczyk, S. Ilieva, Michael Deveaux, D. Tefelski, D. Pszczel, J. Dumarchez, Ralf Ulrich, A. Marcinek, M. Strikhanov, D. S. Prokhorova, M. Posiadala-Zezula, M. Słodkowski, Andrzej Rybicki, P. Staszel, M. Unger, J. Puzović, R. Tsenov, A. D. Marino, A. Bravar, Alexander Malakhov, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), and NA61/SHINE
Subjects: NA61, Physics and Astronomy (miscellaneous), Hadron, Nuclear Theory, momentum [beam], 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], scattering [p p], correlation function, Nuclear Experiment (nucl-ex), dimension: 2, Nuclear Experiment, Physics, CERN Super Proton Synchrotron, NA61/SHINE Collaboration, suppression, Super Proton Synchrotron, 2 [dimension], Pseudorapidity, beam: momentum, Nucleon, Particle Physics - Experiment, correlation: two-particle, p p: scattering, Proton Synchrotron, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Momentum, Nuclear physics, 0103 physical sciences, Rapidity, ddc:530, Nuclear Physics - Experiment, 010306 general physics, Engineering (miscellaneous), two-particle [correlation], enhancement, 010308 nuclear & particles physics, 7Be + 9Be collisions, CERN SPS, proton synchrotron, 19-150 GeV/nucleon, rapidity, Quark–gluon plasma, quark-gluon plasma, angular-correlations, dependence, collisions, High Energy Physics::Experiment, hadron, experimental results
Abstract: The European physical journal / C 80(12), 1151 (1-20) (2020). doi:10.1140/epjc/s10052-020-08675-4, A measurement of charged hadron pair correlations in two-dimensional $\Delta \eta \Delta \phi $ space is presented. The analysis is based on total 30 million central Be + Be collisions observed in the NA61/SHINE detector at the CERN SPS for incident beam momenta of 19A, 30A, 40A, 75A, and 150A $\text {Ge} \text {V}/c$. Measurements were carried out for unlike-sign and like-sign charge hadron pairs independently. The $C(\Delta \eta ,\Delta \phi )$ correlation functions were compared with results from a similar analysis on p + p interactions at similar beam momenta per nucleon. General trends of the back-to-back correlations are similar in central Be + Be collisions and p + p interactions, but are suppressed in magnitude due to the increased combinatorial background. Predictions from the Epos and UrQMD models are compared to the measurements. Evolution of an enhancement around $(\Delta \eta ,\Delta \phi ) = (0,0)$ with incident energy is observed in central Be + Be collisions. It is not predicted by both models and almost non-existing in proton–proton collisions at the same momentum per nucleon., Published by Springer, Heidelberg
Published: 2020
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18. Mapping the phases of quantum chromodynamics with beam energy scan

Author: Nu Xu, Mikhail A. Stephanov, Adam Bzdak, Jinfeng Liao, Volker Koch, and ShinIchi Esumi
Subjects: Phase transition, Particle physics, Nuclear Theory, General Physics and Astronomy, FOS: Physical sciences, 01 natural sciences, Mathematical Sciences, Nuclear Theory (nucl-th), High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Lattice, Critical point (thermodynamics), 0103 physical sciences, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Physics, Quantum chromodynamics, 010308 nuclear & particles physics, High Energy Physics - Lattice (hep-lat), Observable, Nuclear & Particles Physics, High Energy Physics - Phenomenology, Physical Sciences, Relativistic Heavy Ion Collider, National laboratory, Transport phenomena, Beam energy
Abstract: We review the present status of the search for a phase transition and critical point as well as anomalous transport phenomena in Quantum Chromodynamics (QCD), with an emphasis on the Beam Energy Scan program at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. We present the conceptual framework and discuss the observables deemed most sensitive to a phase transition, QCD critical point, and anomalous transport, focusing on fluctuation and correlation measurements. Selected experimental results for these observables together with those characterizing the global properties of the systems created in heavy ion collisions are presented. We then discuss what can be already learned from the currently available data about the QCD critical point and anomalous transport as well as what additional measurements and theoretical developments are needed in order to discover these phenomena., Review article on the physics of beam energy scan in relativistic nuclear collisions, updated version-2 matching the published paper [Physics Reports 853 (2020) pp. 1-87]
Published: 2020

19. Search for an exotic S=−2 , Q=−2 baryon resonance in proton-proton interactions at sNN=17.3 GeV

Author: O. Petukhov, F.F. Guber, M. Ćirković, Maciej Rybczyński, Michael Deveaux, T. Antičić, H. Ströbele, B. A. Popov, A. Garibov, Adam Bzdak, H. J. Mathes, V. I. Kolesnikov, J. Cybowska, J. Puzović, S. R. Johnson, M. Maćkowiak-Pawłowska, V. Babkin, Mateusz Baszczyk, Vitalii Ozvenchuk, M. Kuich, A. Damyanova, S. Bhosale, Antoni Aduszkiewicz, D. Kolev, A. Korzenev, P. Podlaski, B. Maksiak, M. Buryakov, O. Wyszyński, A. Ivashkin, Alexey Kurepin, T. Matulewicz, F.F. Valiev, S. Puławski, V. Tereshchenko, V. Paolone, Sergey V. Morozov, Tobiasz Czopowicz, Darko Veberič, D. Pszczel, J. Dumarchez, Markus Roth, Ralf Ulrich, A. O. Merzlaya, B. Łysakowski, E. D. Zimmerman, H. Cherif, Andrzej Rybicki, A. Wickremasinghe, J. Stepaniak, B. Porfy, Alexander Malakhov, B. T. Rumberger, M. Naskręt, M. Strikhanov, Ł. Mik, M. Unger, A. Taranenko, G. A. Feofilov, Dieter Røhrich, Evgeny Andronov, M. Bogomilov, K. Łojek, B. Messerly, G. Stefanek, M. Ravonel, Alberica Toia, D. S. Prokhorova, V. Klochkov, Vladimir Kovalenko, Z. Majka, R. Zwaska, Marek Gaździcki, Ludwik Turko, A. V. Brandin, S.N. Igolkin, W. Dominik, Mate Csanad, O. Golosov, A. Bravar, Ilya Selyuzhenkov, A. Tefelska, Z. Fodor, Rainer Arno Ernst Renfordt, Tatiana Lazareva, A. Haesler, Vladimir Vechernin, M. Rumyantsev, D. Tefelski, Dag Larsen, M. Deliyergiyev, S. Kowalski, S. Ilieva, M.B. Golubeva, M. Posiadala-Zezula, V.M. Golovatyuk, A. Sadovsky, Wojciech Kucewicz, J. Brzychczyk, K. Schmidt, R. Płaneta, Andras Laszlo, Katarzyna Grebieszkow, E. Rondio, St Mrówczyński, E. Kashirin, T. Susa, Michal Koziel, Miroslaw Marek Kielbowicz, N. Kargin, A. Dmitriev, M. Słodkowski, P. Staszel, V. V. Lyubushkin, G. L. Melkumov, V. A. Kireyeu, O. Busygina, M. Lewicki, A. Marcinek, W. Bryliński, A. Rustamov, R. Tsenov, A. D. Marino, A. Blondel, Y. Nagai, Zbigniew Wlodarczyk, Alexey Krasnoperov, V. Matveev, R. Engel, K. Marton, P. Seyboth, A. Yu. Seryakov, N. Davis, L. Fields, Kreso Kadija, and Piotr Dorosz
Subjects: Physics, Quark, Quantum chromodynamics, Particle physics, Proton, 010308 nuclear & particles physics, Constituent quark, 01 natural sciences, Resonance (particle physics), Pentaquark, Baryon, 0103 physical sciences, Invariant mass, 010306 general physics
Abstract: Pentaquark states have been extensively investigated theoretically in the context of the constituent quark model. In this paper results of an experimental search for pentaquarks in the Ξ- π-, Ξ- π+, Ξ¯+ π- and Ξ¯+ π+ invariant mass spectra in proton-proton interactions at s=17.3 GeV are presented. Previous possible evidence from the NA49 collaboration of the existence of a narrow Ξ- π- baryon resonance in p+p interactions is not confirmed with almost 10 times greater event statistics. The search was performed using the NA61/SHINE detector which reuses the main components of the NA49 apparatus. No signal was observed with either the selection cuts of NA49 or newly optimized cuts.
Published: 2020
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20. Measurement of $$\phi $$ meson production in $$p + p$$ interactions at 40, 80 and $$158 \, \hbox {GeV}/c$$ with the NA61/SHINE spectrometer at the CERN SPS

Author: Darko Veberič, Wojciech Kucewicz, E. Kashirin, V. V. Lyubushkin, A. Bravar, G. L. Melkumov, A. Garibov, Andrzej Rybicki, A. Damyanova, B. A. Popov, Vitalii Ozvenchuk, M. Kuich, M. Ravonel, V. Babkin, A. Marchionni, V. Paolone, E. D. Zimmerman, K. Marton, A. Sadovsky, Alberica Toia, V.M. Golovatyuk, Alexander Malakhov, A. Yu. Seryakov, M. Unger, Evgeny Andronov, B. Messerly, A. Wojtaszek-Szwarc, V. I. Kolesnikov, J. Cybowska, D. Kolev, I. Selyuzhenkov, M.B. Golubeva, Viktor Matveev, B. Porfy, Ralf Ulrich, L. Zambelli, M. Rumyantsev, D. Pszczel, A. Blondel, A. Ivashkin, A. Tefelska, B. T. Rumberger, A. Marcinek, M. Strikhanov, M. Posiadala-Zezula, M. Deliyergiyev, Markus Roth, A. Rustamov, Katarzyna Grebieszkow, O. Golosov, D. S. Prokhorova, H. J. Mathes, Z. Fodor, Mate Csanad, Michael Deveaux, H. Ströbele, J. Puzović, Ł. Mik, Antoni Aduszkiewicz, S. Ilieva, Dag Larsen, Tatiana Lazareva, V. Klochkov, Vladimir Kovalenko, R. Zwaska, G. A. Feofilov, Ludwik Turko, E. Rondio, D. Manić, Adam Bzdak, P. Dorosz, N. Kargin, V. A. Kireyeu, P. Staszel, K. Kowalik, D. Tefelski, R. Tsenov, R. Płaneta, St Mrówczyński, A. V. Brandin, Marek Gaździcki, Alexey Kurepin, J. Brzychczyk, Ralph Engel, A. D. Marino, B. Maksiak, K. Schmidt, T. Susa, A. Dmitriev, Andras Laszlo, Z. Majka, S. V. Morozov, Y. Nagai, Michal Koziel, P. Seyboth, N. Davis, Kreso Kadija, A. O. Merzlaya, Zbigniew Wlodarczyk, Alexey Krasnoperov, M. Buryakov, O. Wyszyński, E. Richter-Wąs, M. Słodkowski, S. Puławski, A. Wickremasinghe, O. Petukhov, M. Maćkowiak-Pawłowska, Mateusz Baszczyk, M. Ćirković, P. Podlaski, Maciej Rybczyński, T. Antičić, V. Tereshchenko, B. Łysakowski, J. Stepaniak, K. Łojek, Dieter Røhrich, S.N. Igolkin, W. Dominik, S. R. Johnson, A. Korzenev, L. Fields, E. Kaptur, A. Haesler, Vladimir Vechernin, T. Matulewicz, S. Kowalski, A. Taranenko, S. Bhosale, Tobiasz Czopowicz, J. Dumarchez, F.F. Guber, M. Naskręt, M. Bogomilov, G. Stefanek, Rainer Arno Ernst Renfordt, H. Cherif, Miroslaw Marek Kielbowicz, O. Busygina, M. Lewicki, M. Pavin, W. Bryliński, and F.F. Valiev
Subjects: Quantum chromodynamics, Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, Proton, 010308 nuclear & particles physics, Phi meson, 01 natural sciences, Momentum, 0103 physical sciences, Production (computer science), Invariant mass, Rapidity, 010306 general physics, Engineering (miscellaneous)
Abstract: Results on $$\phi $$ϕ meson production in inelastic $$p + p$$p+p collisions at CERN SPS energies are presented. They are derived from data collected by the NA61/SHINE fixed target experiment, by means of invariant mass spectra fits in the $$\phi \rightarrow K^+ K^- $$ϕ→K+K- decay channel. They include the first ever measured double differential spectra of $$\phi $$ϕ mesons as a function of rapidity $$y$$y and transverse momentum $$p_{\text {T}}$$pT for proton beam momenta of $$80 \, \hbox {GeV}/c$$80GeV/c and $$158 \, \hbox {GeV}/c$$158GeV/c, as well as single differential spectra of $$y$$y or $$p_{\text {T}}$$pT for beam momentum of $$40 \, \hbox {GeV}/c$$40GeV/c. The corresponding total $$\phi $$ϕ yields per inelastic $$p + p$$p+p event are obtained. These results are compared with existing data on $$\phi $$ϕ meson production in $$p + p$$p+p collisions. The comparison shows consistency but superior accuracy of the present measurements. The emission of $$\phi $$ϕ mesons in $$p + p$$p+p reactions is confronted with that occurring in $$\mathrm{Pb} + \mathrm{Pb}$$Pb+Pb collisions, and the experimental results are compared with model predictions. It appears that none of the considered models can properly describe all the experimental observations.
Published: 2020
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21. Measurements of hadron production in π++C and π++Be interactions at 60 GeV/c

Author: Vitalii Ozvenchuk, M. Kuich, Katarzyna Grebieszkow, A. Blondel, F.F. Guber, A. V. Brandin, Wojciech Kucewicz, M. Rumyantsev, Z. Majka, R. Engel, K. Marton, E. Kashirin, M. Ravonel, Ilya Selyuzhenkov, S. R. Johnson, A. Korzenev, L. Fields, P. Seyboth, A. Yu. Seryakov, Ralf Ulrich, G. A. Feofilov, Alberica Toia, Andrzej Rybicki, M. Maćkowiak-Pawłowska, L. Zambelli, Mateusz Baszczyk, E. Richter-Wąs, M. Słodkowski, B. Messerly, A. Wojtaszek-Szwarc, H. Cherif, A. Bravar, D. Kolev, V. Klochkov, Vladimir Kovalenko, Y. Nagai, R. Zwaska, T. Matulewicz, Alexander Malakhov, P. Podlaski, Ludwik Turko, A. Damyanova, V. V. Lyubushkin, G. L. Melkumov, M. Strikhanov, V. I. Kolesnikov, M. Naskręt, J. Cybowska, V. Paolone, S. Puławski, Zbigniew Wlodarczyk, J. Stepaniak, N. Davis, O. Golosov, M. Deliyergiyev, B. Porfy, M. Bogomilov, G. Stefanek, Mate Csanad, A. Wickremasinghe, A. Taranenko, B. T. Rumberger, Tatiana Lazareva, J. Brzychczyk, K. Łojek, A. Sadovsky, K. Kowalik, S. Bhosale, E. D. Zimmerman, D. Tefelski, E. Kaptur, F.F. Valiev, P. Staszel, Kreso Kadija, A. Haesler, Vladimir Vechernin, Tobiasz Czopowicz, T. Susa, M. Pavin, R. Tsenov, K. Schmidt, S. Kowalski, R. Płaneta, Miroslaw Marek Kielbowicz, S.N. Igolkin, M. Unger, Darko Veberič, St Mrówczyński, A. D. Marino, Marek Gaździcki, D. S. Prokhorova, Alexey Kurepin, W. Dominik, J. Dumarchez, Piotr Dorosz, H. J. Mathes, Alexey Krasnoperov, A. Dmitriev, A. Marcinek, O. Busygina, Antoni Aduszkiewicz, M. Lewicki, A. Snoch, A. Ivashkin, M. Posiadala-Zezula, A. Rustamov, W. Bryliński, V. Tereshchenko, V. Matveev, Adam Bzdak, Sergey V. Morozov, D. Pszczel, A. Garibov, Rainer Arno Ernst Renfordt, Andras Laszlo, A. Tefelska, V. Babkin, B. Łysakowski, S. Ilieva, Michal Koziel, B. Maksiak, Maciej Rybczyński, T. Antičić, Ł. Mik, Dieter Røhrich, A. O. Merzlaya, Michael Deveaux, Markus Roth, Z. Fodor, A. Marchionni, Dag Larsen, O. Petukhov, H. Ströbele, E. Rondio, M. Ćirković, K. Wojcik, N. Kargin, V. A. Kireyeu, Evgeny Andronov, M.B. Golubeva, M. Buryakov, O. Wyszyński, J. Puzović, B. A. Popov, and G. B. Mills
Subjects: Quantum chromodynamics, Physics, Spectrometer, 010308 nuclear & particles physics, Oscillation, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Hadron, Flux, 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, 010306 general physics, Neutrino oscillation, Fermi Gamma-ray Space Telescope
Abstract: Precise knowledge of hadron production rates in the generation of neutrino beams is necessary for accelerator-based neutrino experiments to achieve their physics goals. NA61/SHINE, a large-acceptance hadron spectrometer, has recorded hadron+nucleus interactions relevant to ongoing and future long-baseline neutrino experiments at Fermi National Accelerator Laboratory. This paper presents three analyses of interactions of 60 GeV/$c$ $\pi^+$ with thin, fixed carbon and beryllium targets. Integrated production and inelastic cross sections were measured for both of these reactions. In an analysis of strange, neutral hadron production, differential production multiplicities of $K^0_{S}$, $\Lambda$ and anti-$\Lambda$ were measured. Lastly, in an analysis of charged hadron production, differential production multiplicities of $\pi^+$, $\pi^-$, $K^+$, $K^-$ and protons were measured. These measurements will enable long-baseline neutrino experiments to better constrain predictions of their neutrino flux in order to achieve better precision on their neutrino cross section and oscillation measurements.
Published: 2019
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22. Wounded nucleon, quark, and quark-diquark emission functions versus experimental results from the BNL Relativistic Heavy Ion Collider at sNN=200 GeV

Author: Adam Bzdak, Michał Barej, and Paweł Gutowski
Subjects: Quark, Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Lattice, Nuclear Theory, High Energy Physics::Phenomenology, 01 natural sciences, Charged particle, Diquark, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Multiplicity (chemistry), Nuclear Experiment, 010306 general physics, Nucleon, Relativistic Heavy Ion Collider, Nuclear theory
Abstract: Using the wounded nucleon, quark, and quark-diquark models, we extract the wounded source emission functions from the PHOBOS data for $d+\mathrm{Au}$ collisions at $\sqrt{{s}_{NN}}=200$ GeV. We apply these functions to compute charged particle multiplicity distributions as functions of pseudorapidity for $p+p, p+\mathrm{Al}, p+\mathrm{Au}, d+\mathrm{Au}, ^{3}\mathrm{He}+\mathrm{Au}, \mathrm{Cu}+\mathrm{Cu}, \mathrm{Cu}+\mathrm{Au}, \mathrm{Au}+\mathrm{Au}$, and $\mathrm{U}+\mathrm{U}$ collisions at the same energy and compare them with experimental data from the PHOBOS and PHENIX Collaborations. In symmetric collisions of heavy nuclei, the obtained distributions differ among the tested models. On the other hand, in asymmetric collisions, all three models give essentially the same distributions. The wounded quark-diquark and quark models are in reasonable agreement with data for all the investigated systems.
Published: 2019
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23. Measurements of production and inelastic cross sections for p+C , p+Be , and p+Al at 60 GeV/c and p+C and p+Be at 120 GeV/c

Author: L. Zambelli, M. Rumyantsev, O. Golosov, Ludwik Turko, Vitalii Ozvenchuk, M. Kuich, D. S. Prokhorova, M. Deliyergiyev, H. Cherif, A. Damyanova, A. Marchionni, P. Seyboth, H. J. Mathes, E. Rondio, N. Davis, V. I. Kolesnikov, J. Cybowska, L. Fields, K. Wojcik, N. Kargin, Antoni Aduszkiewicz, B. Maksiak, V. A. Kireyeu, A. Snoch, Piotr Dorosz, D. Pszczel, Marek Gaździcki, K. Kowalik, B. Porfy, Mate Csanad, R. Engel, M. Ravonel, D. Tefelski, Alberica Toia, B. T. Rumberger, M. Buryakov, Andras Laszlo, K. Marton, Rainer Arno Ernst Renfordt, A. Yu. Seryakov, J. Brzychczyk, O. Wyszyński, A. O. Merzlaya, B. Messerly, Tatiana Lazareva, A. Garibov, A. Wojtaszek-Szwarc, A. V. Brandin, Michal Koziel, A. Ivashkin, A. Tefelska, D. Kolev, V. Babkin, Maciej Rybczyński, T. Antičić, Ilya Selyuzhenkov, O. Petukhov, T. Susa, S. R. Johnson, Evgeny Andronov, G. A. Feofilov, M. Ćirković, B. A. Popov, A. Rustamov, F. Guber, A. Korzenev, A. Dmitriev, Markus Roth, S. Ilieva, K. Schmidt, R. Płaneta, T. Matulewicz, Michael Deveaux, Y. Nagai, Miroslaw Marek Kielbowicz, M. Posiadala-Zezula, A. Sadovsky, Katarzyna Grebieszkow, A. B. Kurepin, H. Ströbele, St Mrówczyński, J. Stepaniak, V. Klochkov, Vladimir Kovalenko, O. Busygina, R. Zwaska, M. Lewicki, P. Staszel, Wojciech Kucewicz, Zbigniew Wlodarczyk, V. Matveev, K. Łojek, W. Bryliński, E. Kashirin, M. Pavin, Andrzej Rybicki, A. Marcinek, S.N. Igolkin, W. Dominik, R. Tsenov, G. B. Mills, M. Unger, Ł. Mik, A. D. Marino, Z. Fodor, Alexey Krasnoperov, V. V. Lyubushkin, Ralf Ulrich, G. L. Melkumov, Dag Larsen, A. Bravar, F.F. Valiev, V. Paolone, M. Strikhanov, E. D. Zimmerman, Z. Majka, Darko Veberič, M. B. Golubeva, Alexander Malakhov, A. Blondel, M. Naskręt, J. Puzović, M. Bogomilov, G. Stefanek, S. Bhosale, Tobiasz Czopowicz, J. Dumarchez, Kreso Kadija, Adam Bzdak, V. Tereshchenko, Sergey V. Morozov, B. Łysakowski, Dieter Røhrich, M. Maćkowiak-Pawłowska, Mateusz Baszczyk, P. Podlaski, E. Kaptur, A. Haesler, Vladimir Vechernin, S. Kowalski, E. Richter-Wąs, M. Słodkowski, S. Puławski, A. Wickremasinghe, and A. Taranenko
Subjects: Quantum chromodynamics, Physics, Large Hadron Collider, Spectrometer, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Flux, 01 natural sciences, 7. Clean energy, Super Proton Synchrotron, Nuclear physics, Cross section (geometry), 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, 010306 general physics
Abstract: This paper presents measurements of production cross sections and inelastic cross sections for the following reactions: 60 GeV/c protons with C, Be, Al targets and 120 GeV/c protons with C and Be targets. The analysis is performed using the NA61/SHINE spectrometer at the CERN Super Proton Synchrotron. First measurements are obtained using protons at 120 GeV/c, while the results for protons at 60 GeV/c are compared with previously published measurements. These interaction cross section measurements are critical inputs for neutrino flux prediction in current and future accelerator-based long-baseline neutrino experiments.
Published: 2019
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24. Mapping the QCD phase diagram with statistics-friendly distributions

Author: Volker Koch and Adam Bzdak
Subjects: Factorial, Phase transition, Particle physics, Nuclear Theory, Qcd phase diagram, FOS: Physical sciences, 01 natural sciences, Atomic, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Particle and Plasma Physics, 0103 physical sciences, Nuclear, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Nuclear theory, Cumulant, Quantum chromodynamics, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Molecular, Nuclear & Particles Physics, High Energy Physics - Phenomenology, Baryon density, Multiplicity distribution
Abstract: We demonstrate that the multiplicity distribution of a system located in the vicinity of a first-order phase transition can be successfully measured in terms of its factorial cumulants with a surprisingly small number of events. This finding has direct implications for the experimental search of a QCD phase transition conjectured to be located in the high baryon density region of the QCD phase diagram., Comment: 6 pages, 3 figures; comments added
Published: 2019

25. Femtoscopy of stopped protons

Author: Volker Koch, Adam Bzdak, and Andrzej Bialas
Subjects: Nuclear Theory, FOS: Physical sciences, Atomic, 01 natural sciences, High Energy Physics - Experiment, Length contraction, Nuclear Theory (nucl-th), Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Particle and Plasma Physics, Correlation function, 0103 physical sciences, medicine, Nuclear, Rapidity, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Physics, 010308 nuclear & particles physics, Oscillation, Molecular, Collision, Nuclear & Particles Physics, High Energy Physics - Phenomenology, medicine.anatomical_structure, Baryon density, Configuration space, Nucleus
Abstract: The longitudinal proton-proton femtoscopy (HBT) correlation function, based on the idea that in a heavy ion collision at $\sqrt{s} \lesssim 20$ GeV stopped protons are likely to be separated in configuration space, is evaluated. It shows a characteristic oscillation which appears sufficiently pronounced to be accessible in experiment. The proposed measurement is essential for estimating the baryon density in the central rapidity region, and can be also viewed as an (almost) direct verification of the Lorentz contraction of the fast-moving nucleus., 8 pages, 3 figures; discussion on strong and Coulomb interactions included
Published: 2019
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26. Saturation and collectivity in p + A collisions at RHIC and LHC

Author: Adam Bzdak
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Large Hadron Collider, 010308 nuclear & particles physics, 0103 physical sciences, Small systems, Atomic physics, 010306 general physics, Long range correlation, Saturation (chemistry), 01 natural sciences, Color-glass condensate
Abstract: I discuss several ideas that may help to disentangle between initial state effects present, e.g., in the color glass condensate, and final state effects driven, e.g., by hydrodynamics or transport models.
Published: 2016
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27. Flow in small systems from parton scatterings

Author: Guo-Liang Ma and Adam Bzdak
Subjects: Physics, Elastic scattering, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Small systems, Parton, 01 natural sciences, Azimuth, Nuclear physics, Flow (mathematics), 0103 physical sciences, Nuclear Experiment, 010306 general physics, Anisotropy, Fourier series
Abstract: We show that the incoherent elastic scattering of partons, as present in a multi-phase transport model (AMPT), with a modest parton-parton cross-section of σ = 1.5 – 3 mb , naturally explains the long-range two-particle azimuthal correlations as observed in p+Pb collisions at the LHC. The elliptic, v2, and triangular, v3, Fourier coefficients are in good agreement with the CMS data. An escape mechanism was proposed recently to explain the AMPT results. We demonstrate that parton scatterings are directly responsible for generating the azimuthal anisotropy.
Published: 2016
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28. The QCD phase diagram and statistics friendly distributions

Author: Dmytro Oliinychenko, Adam Bzdak, Volker Koch, and Jan Steinheimer
Subjects: Nuclear and High Energy Physics, Factorial, nucl-th, Nuclear Theory, Proton, factorial cumulants, Qcd phase diagram, fluctuations, Phase (waves), FOS: Physical sciences, Star (graph theory), Atomic, 01 natural sciences, Nuclear Theory (nucl-th), Particle and Plasma Physics, 0103 physical sciences, Statistics, Nuclear, Nuclear Experiment, 010306 general physics, Cumulant, QCD phase diagram, (net)-proton, Physics, Quantum Physics, 010308 nuclear & particles physics, Component (thermodynamics), Molecular, Nuclear & Particles Physics, Distribution (mathematics), Astronomical and Space Sciences
Abstract: The preliminary STAR data for proton cumulants for central collisions at \sqrt{s}=7.7 GeV are consistent with a two-component proton multiplicity distribution. We show that this two-component distribution is statistics friendly in that factorial cumulants of surprisingly high orders may be extracted with a relatively small number of events. As a consequence the two-component model can be tested and verified right now with the presently available STAR data from the first phase of the RHIC beam energy scan., Proceedings, Quark Matter 2019, Wuhan
Published: 2021
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29. Cumulants vs correlation functions and the QCD phase diagram at low energies

Author: Vladimir Skokov, Adam Bzdak, Volker Koch, and Nils Strodthoff
Subjects: Beam energy scan, Physics, Quantum Physics, Nuclear and High Energy Physics, Particle physics, Particle number, 010308 nuclear & particles physics, Qcd phase diagram, Molecular, Net-baryon density, Atomic, Nuclear & Particles Physics, 01 natural sciences, Correlation, Theoretical physics, Particle and Plasma Physics, 0103 physical sciences, Nuclear, Nuclear Experiment, 010306 general physics, Cumulant, QCD phase diagram, Astronomical and Space Sciences
Abstract: © 2017 The Author(s) We discuss the relation between particle number cumulants and genuine correlation functions. It is argued that measuring multi-particle correlation functions could provide cleaner information on possible non-trivial dynamics in heavy-ion collisions.
Published: 2017
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30. Net-baryon multiplicity distribution consistent with lattice QCD

Author: Adam Bzdak and Volker Koch
Subjects: Nuclear Theory, Distribution (number theory), FOS: Physical sciences, Atomic, 01 natural sciences, Measure (mathematics), High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Nuclear, Statistical physics, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Cumulant, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Molecular, Skellam distribution, Lattice QCD, Net (mathematics), Nuclear & Particles Physics, Baryon, High Energy Physics - Phenomenology, Multiplicity distribution
Abstract: We determine the net-baryon multiplicity distribution which reproduces all cumulants measured so far by lattice QCD. We present the dependence on the volume and temperature of this distribution. We find that for temperatures and volumes encountered in heavy ion reactions, the multiplicity distribution is very close to the Skellam distribution, making the experimental determination of it rather challenging. We further provide estimates for the statistics required to measure cumulants of the net-baryon and net-proton distributions., Comment: 13 pages, 6 figures; Extended version. Now include statistics estimate for RHIC and LHC based on delta method
Published: 2019
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31. Large proton cumulants from the superposition of ordinary multiplicity distributions

Author: Volker Koch, Dmytro Oliinychenko, Jan Steinheimer, and Adam Bzdak
Subjects: Factorial, Nuclear Theory, nucl-th, Sixth order, FOS: Physical sciences, nucl-ex, 01 natural sciences, Atomic, High Energy Physics - Experiment, Nuclear Theory (nucl-th), Superposition principle, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Particle and Plasma Physics, 0103 physical sciences, Nuclear, Statistical physics, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Cumulant, Nuclear theory, Physics, 010308 nuclear & particles physics, hep-ex, Molecular, Multiplicity (mathematics), hep-ph, Nuclear & Particles Physics, High Energy Physics - Phenomenology, Physics::Accelerator Physics, High Energy Physics::Experiment, Multiplicity distribution
Abstract: We construct a multiplicity distribution characterized by large factorial cumulants (integrated correlation functions) from a simple combination of two ordinary multiplicity distributions characterized by small factorial cumulants. We find that such a model, which could be interpreted as representing two event classes, reproduces the preliminary data for the proton cumulants measured by the STAR collaboration at $7.7$ GeV very well. This model then predicts very large values for the fifth and sixth order factorial cumulants, which can be tested in experiment., Comment: 15 pages, 4 figures; comments and addendum (2 pages) added
Published: 2018

32. Measurements of total production cross sections for π++C , π++Al , K++C , and K++Al at 60 GeV/c and π++C and π++Al at 31 GeV/c

Author: Andrzej Rybicki, E. Kashirin, S.A. Bunyatov, Tatiana Lazareva, K. Marton, A. Bravar, A. Yu. Seryakov, G. A. Feofilov, B. A. Popov, V. V. Lyubushkin, A. E. Herve, A. V. Brandin, M. Unger, G. L. Melkumov, K. Kowalik, D. Tefelski, A. Marchionni, A. B. Kurepin, Alexander Malakhov, R. Płaneta, St Mrówczyński, I. Selyuzhenkov, O. Golosov, F.F. Valiev, A. Garibov, A. Ivashkin, A. Snoch, Andras Laszlo, O. Petukhov, B. T. Rumberger, Darko Veberič, Michal Koziel, B. Baatar, Fedor Guber, Ralf Ulrich, R. Tsenov, Michael Deveaux, Miroslaw Marek Kielbowicz, J. Puzović, M. Strikhanov, Markus Roth, B. Messerly, M. Słodkowski, Marek Gaździcki, A. Tefelska, V. Paolone, V. Klochkov, A. Wojtaszek-Szwarc, Vladimir Kovalenko, R. Zwaska, J. Stepaniak, K. Schmidt, H. J. Mathes, A. K. Yarritu, O. Busygina, M. Posiadala, Y. Nagai, M. Lewicki, S. Ilieva, Antoni Aduszkiewicz, M. Pavin, W. Bryliński, E. D. Zimmerman, D. Kolev, Rainer Arno Ernst Renfordt, P. Staszel, A. Marcinek, B. Maksiak, Zbigniew Wlodarczyk, K. Łojek, V. I. Kolesnikov, M. Ravonel, V. Tereshchenko, B. Łysakowski, Evgeny Andronov, A. D. Marino, M. B. Golubeva, S. Puławski, A. O. Merzlaya, M. Bogomilov, G. Stefanek, Katarzyna Grebieszkow, A. Blondel, A. Wickremasinghe, S.N. Igolkin, W. Dominik, S. Bhosale, D. Manić, H. Cherif, A. Rustamov, E. Richter-Wąs, G. B. Mills, E. Rondio, S. R. Johnson, N. Kargin, Dieter Røhrich, Tobiasz Czopowicz, Alexey Krasnoperov, V. A. Kireyeu, M. Naskręt, A. Korzenev, L. Fields, J. Dumarchez, W. Rauch, Alberica Toia, S. Morozov, Ludwik Turko, P. Dorosz, E. Kaptur, T. Matulewicz, O. Wyszyński, M. Walewski, A. Haesler, A. Taranenko, Vitalii Ozvenchuk, Vladimir Vechernin, M. Kuich, A. Sadovsky, Z. Fodor, S. Kowalski, Ł. Mik, H. Ströbele, L. Zambelli, Maciej Rybczyński, T. Antičić, M. Ćirković, Dag Larsen, M. Maćkowiak-Pawłowska, Mateusz Baszczyk, P. Podlaski, A. Damyanova, Viktor Matveev, P. Seyboth, N. Davis, Kreso Kadija, Adam Bzdak, Z. Majka, J. Brzychczyk, Ralph Engel, T. Susa, and Wojciech Kucewicz
Subjects: Physics, Large Hadron Collider, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Flux, 01 natural sciences, 7. Clean energy, Super Proton Synchrotron, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Heavy ion, Neutrino, Nuclear Experiment, 010306 general physics
Abstract: This paper presents several measurements of total production cross sections and total inelastic cross sections for the following reactions: π++C, π++Al, K++C, K++Al at 60 GeV/c, π++C and π++Al at 31 GeV/c. The measurements were made using the NA61/SPS Heavy Ion and Neutrino Experiment spectrometer at the CERN Super Proton Synchrotron (SPS). Comparisons with previous measurements are given and good agreement is seen. These interaction cross sections measurements are a key ingredient for neutrino flux prediction from the reinteractions of secondary hadrons in current and future accelerator-based long-baseline neutrino experiments.
Published: 2018
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33. A remark on the sign change of the four-particle azimuthal cumulant in small systems

Author: Guo-Liang Ma and Adam Bzdak
Subjects: Nuclear and High Energy Physics, Nuclear Theory, FOS: Physical sciences, Elementary particle, 01 natural sciences, Particle detector, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Cumulant, Physics, 010308 nuclear & particles physics, Atlas (topology), Elliptic flow, lcsh:QC1-999, Azimuth, High Energy Physics - Phenomenology, Quantum electrodynamics, Transverse momentum, Measuring instrument, lcsh:Physics
Abstract: The azimuthal cumulants, $c_2\{2\}$ and $c_2\{4\}$, originating from the global conservation of transverse momentum in the presence of hydro-like elliptic flow are calculated. We observe the sign change of $c_2\{4\}$ for small number of produced particles. This is in a qualitative agreement with the recent ATLAS measurement of multi-particle azimuthal correlations with the subevent cumulant method., 8 pages, 2 figures; PLB version, less equations, experimental points added
Published: 2018

34. Wounded-quark emission function at the top energy available at the BNL Relativistic Heavy Ion Collider

Author: Michał Barej, Adam Bzdak, and Paweł Gutowski
Subjects: Quark, Physics, Particle physics, 010308 nuclear & particles physics, Nuclear Theory, Physics::Medical Physics, Monte Carlo method, Quark model, Function (mathematics), Computer Science::Digital Libraries, 01 natural sciences, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Centrality, Nucleon, Relativistic Heavy Ion Collider, Energy (signal processing)
Abstract: The wounded nucleon and quark emission functions are extracted for different centralities in d+Au collisions at s=200GeV using Monte Carlo simulations and experimental data. The shape of the emission function depends on centrality in the wounded nucleon model, whereas it is practically universal (within uncertainties) in the wounded quark model. Predictions for dNch/dη distributions in p+Au and He3+Au collisions are presented.
Published: 2018
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35. Multi-particle eccentricities in collisions dominated by fluctuations

Author: Vladimir Skokov and Adam Bzdak
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Nuclear Theory, FOS: Physical sciences, Color-glass condensate, Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Quark–gluon plasma, Particle, Nuclear Experiment, Glauber, Nuclear theory
Abstract: We compute analytically the multi-particle eccentricities, \epsilon_m {2n}, for systems dominated by fluctuations, such as proton-nucleus collisions at the Large Hadron Collider. In particular, we derive a general relation for . We further discuss the relations between various multi-particle eccentricities and demonstrate that \epsilon_2{2} > \epsilon_2{4} \simeq \epsilon_2{6} \simeq \epsilon_2{8}, in agreement with recent numerical calculations in a Glauber model., Comment: 6 pages, 1 figure
Published: 2015
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36. Stopped Nucleons in Configuration Space

Author: Volker Koch, Andrzej Bialas, and Adam Bzdak
Subjects: nucl-th, Nuclear Theory, General Physics and Astronomy, FOS: Physical sciences, 01 natural sciences, String (physics), Mathematical Sciences, High Energy Physics - Experiment, Nuclear physics, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Thermal, 010306 general physics, Nuclear Experiment, Physics, Quantum chromodynamics, 010308 nuclear & particles physics, Projectile, hep-ex, hep-ph, Collision, Nuclear & Particles Physics, High Energy Physics - Phenomenology, Physical Sciences, Configuration space, Chemical equilibrium, Nucleon
Abstract: In this note, using the colour string model, we study the configuration space distribution of stopped nucleons in heavy-ion collisions. We find that the stopped nucleons from the target and the projectile end up separated from each other by the distance increasing with the collision energy. In consequence, for the center of mass energies larger than 6 or 10 GeV (depending on the details of the model) it appears that the system created is not in thermal and chemical equilibrium, and the net baryon density reached is likely not much higher than that already present in the colliding nuclei., Comment: 8 pages, 2 figures
Published: 2018
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37. Elliptic flow coefficients from transverse momentum conservation

Author: Guo-Liang Ma and Adam Bzdak
Subjects: Physics, Conservation law, Nuclear Theory, Particle number, 010308 nuclear & particles physics, Elliptic flow, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Azimuth, Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, Acoustic theory, Transverse plane, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Quantum electrodynamics, 0103 physical sciences, Transverse momentum, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Cumulant
Abstract: We calculate the $k$-particle ($k=2,4,6,8$) azimuthal cumulants resulting from the conservation of transverse momentum. We find that $c_2\{k\}>0$ and depending on the transverse momenta, $c_2\{k\}$ can reach substantial values even for a relatively large number of particles. The impact of our results on the understanding of the onset of collectivity in small systems is emphasized., 8 pages, 1 figure; PRC version
Published: 2018

38. Rapidity dependence of proton cumulants and correlation functions

Author: Adam Bzdak and Volker Koch
Subjects: Nuclear Theory, Proton, FOS: Physical sciences, Atomic, 01 natural sciences, High Energy Physics - Experiment, Nuclear Theory (nucl-th), Nuclear physics, Correlation, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, High Energy Physics - Phenomenology (hep-ph), Clinical Research, 0103 physical sciences, Nuclear, Rapidity, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Cumulant, Physics, 010308 nuclear & particles physics, Molecular, Function (mathematics), Nuclear & Particles Physics, Brain Disorders, High Energy Physics - Phenomenology, Correlation function (statistical mechanics), Transverse plane, Transverse momentum
Abstract: The dependence of multi-proton correlation functions and cumulants on the acceptance in rapidity and transverse momentum is studied. We find that the preliminary data of various cumulant ratios are consistent, within errors, with rapidity and transverse momentum independent correlation functions. However, rapidity correlations which moderately increase with rapidity separation between protons are slightly favored. We propose to further explore the rapidity dependence of multi-particle correlation functions by measuring the dependence of the integrated reduced correlation functions as a function of the size of the rapidity window., 13 pages, 5 figures
Published: 2017
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39. Cumulants and correlation functions versus the QCD phase diagram

Author: Volker Koch, Nils Strodthoff, and Adam Bzdak
Subjects: Nuclear Theory, nucl-th, FOS: Physical sciences, Star (graph theory), Atomic, 01 natural sciences, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, High Energy Physics - Phenomenology (hep-ph), Critical point (thermodynamics), Quantum mechanics, 0103 physical sciences, Nuclear, Rapidity, Statistical physics, 010306 general physics, Nuclear Experiment, Cumulant, Phase diagram, Physics, 010308 nuclear & particles physics, hep-ex, Molecular, hep-ph, Nuclear & Particles Physics, Correlation function (statistical mechanics), High Energy Physics - Phenomenology, Ising model, Impact parameter
Abstract: In this paper we discuss the relation of particle number cumulants and correlation functions. It is argued that measuring couplings of the genuine multi-particle correlation functions could provide cleaner information on possible non-trivial dynamics in heavy-ion collisions. We extract integrated multi-proton correlation functions from the presently available experimental data on proton cumulants. We find that the STAR data contain significant four-proton correlations, at least at the lower energies, with indication of changing dynamics in central collisions. We also find that these correlations are rather long-ranged in rapidity. Finally, using the Ising model, we demonstrate how the signs of the multi-proton correlation functions may be used to exclude certain regions of the phase diagram close to the critical point., Comment: 13 pages, 8 figures; PRC version, improved discussion
Published: 2017
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40. Rapidity dependence of transverse-momentum multiplicity correlations

Author: Adam Bzdak
Subjects: Physics, Nuclear Theory, 010308 nuclear & particles physics, FOS: Physical sciences, Multiplicity (mathematics), 01 natural sciences, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Quantum electrodynamics, 0103 physical sciences, Orthogonal polynomials, Transverse momentum, Rapidity, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Nuclear theory
Abstract: Following previous work [1], we propose to analyze the rapidity dependence of transverse momentum and transverse-momentum multiplicity correlations. We demonstrate that the orthogonal polynomial expansion of the latter has the potential to discriminate between models of particle production., 3 pages; published version
Published: 2017

41. Contributions to the event-by-event charge asymmetry dependence for the elliptic flow of π+ and π− in heavy-ion collisions

Author: Piotr Bozek and Adam Bzdak
Subjects: Physics, Nuclear and High Energy Physics, Charge conservation, Linear function (calculus), 010308 nuclear & particles physics, media_common.quotation_subject, Elliptic flow, Charge (physics), 01 natural sciences, Asymmetry, Nuclear physics, Yield (chemistry), 0103 physical sciences, 010306 general physics, Event (particle physics), Order of magnitude, media_common
Abstract: We discuss various contributions to the event-by-event charge asymmetry dependence of π + and π − elliptic flow, recently measured by the STAR Collaboration at RHIC. It is shown that under general assumptions, the difference between v 2 + and v 2 − at a given fluctuating value of an asymmetry parameter, A , is a linear function of A , as observed in the preliminary data. We discuss two mechanisms that are qualitatively consistent with the experimental data and result in a signal of the correct order of magnitude. Our subsequent hydrodynamic calculations, assuming local charge conservation at freeze-out, yield a qualitative and partial quantitative understanding of the observed signal, so offering a detailed test of the hydrodynamic model in heavy-ion collisions.
Published: 2013
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42. Saturation scale fluctuations and multiparticle rapidity correlations

Author: Adam Bzdak and Kevin Dusling
Subjects: Physics, Particle physics, Nuclear Theory, Scale (ratio), Proton, 010308 nuclear & particles physics, media_common.quotation_subject, FOS: Physical sciences, Multiplicity (mathematics), 01 natural sciences, Asymmetry, Nuclear Theory (nucl-th), Nuclear physics, Momentum, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Saturation (graph theory), Probability distribution, Rapidity, 010306 general physics, media_common
Abstract: We study the effect of intrinsic fluctuations of the proton saturation momentum scale on event-by-event rapidity distributions. Saturation scale fluctuations generate an asymmetry in the single particle rapidity distribution in each event resulting in genuine n-particle correlations having a component linear in the rapidities of the produced particles, $y_1\cdots y_n$. We introduce a color domain model that naturally explains the centrality dependence of the two-particle rapidity correlations recently measured by ATLAS while constraining the probability distribution of saturation scale fluctuations in the proton. Predictions for n = 4, 6 and 8 particle correlations find that the four and eight-particle cumulant change sign at an intermediate multiplicity, a signature which could be tested experimentally., 12 pages, 5 figures
Published: 2016
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43. Particle correlations and the chiral magnetic effect

Author: Volker Koch, Jinfeng Liao, and Adam Bzdak
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hadron, Parity (physics), 01 natural sciences, 0103 physical sciences, Quark–gluon plasma, Nuclear fusion, Magnetic effect, Nuclear Experiment, 010306 general physics
Abstract: In this contribution we will discuss current measurements of particle correlations and their implication for possible local parity violation in heavy-ion collisions.
Published: 2016
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44. Fluctuations and the QCD phase diagram

Author: Adam Bzdak and Volker Koch
Subjects: Physics, 010308 nuclear & particles physics, Qcd phase diagram, Strong interaction, FOS: Physical sciences, General Physics and Astronomy, Observable, Theoretical research, hep-ph, 01 natural sciences, Nuclear & Particles Physics, Mathematical Sciences, High Energy Physics - Phenomenology, Theoretical physics, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Physical Sciences, 010306 general physics, Phase diagram
Abstract: In this contribution we will discuss how the study of various fluctuation observables may be used to explore the phase diagram of the strong interaction. We will briefly summarize the present study of experimental and theoretical research in this area. We will then discuss various corrections and issues which need to be understood and applied for a meaningful comparison of experimental measurements with theoretical predictions. This contribution is dedicated to Andrzej Bialas on the occasion of his $80^{\mathrm{th}}$ birthday., Conference Proceedings
Published: 2016
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45. Centrality dependence of high energy jets inp+Pbcollisions at energies available at the CERN Large Hadron Collider

Author: Adam Bzdak, Vladimir Skokov, and Stefan Bathe
Subjects: Physics, High energy, Particle physics, Large Hadron Collider, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Modification factor, Jet (particle physics), 01 natural sciences, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Centrality, Nuclear theory
Abstract: Author(s): Bzdak, A; Skokov, V; Bathe, S | Abstract: The recently measured centrality dependence of high energy jets in proton-lead collisions at the CERN Large Hadron Collider (LHC) is investigated. We hypothesize that events with jets of very high energy (a few hundred GeV) are characterized by a suppressed number of soft particles, thus shifting these events into more peripheral bins. This naturally results in the suppression (enhancement) of the nuclear modification factor, RpA, in central (peripheral) collisions. Our calculations suggest that a moderate suppression of the order of 20%, for 103 GeV jets, can quantitatively reproduce the experimental data. We further extract the suppression factor as a function of jet energy and test our conjecture using available RpA data for various centralities.
Published: 2016
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46. Multiplicity dependent and non-binomial efficiency corrections for particle number cumulants

Author: R. Holzmann, Adam Bzdak, and Volker Koch
Subjects: Particle number, nucl-th, Nuclear Theory, FOS: Physical sciences, nucl-ex, 01 natural sciences, Atomic, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, High Energy Physics - Phenomenology (hep-ph), Affordable and Clean Energy, 0103 physical sciences, Nuclear, Statistical physics, Nuclear Experiment (nucl-ex), 010306 general physics, Cumulant, Nuclear theory, Nuclear Experiment, Physics, 010308 nuclear & particles physics, hep-ex, Molecular, Multiplicity (mathematics), hep-ph, Nuclear & Particles Physics, High Energy Physics - Phenomenology
Abstract: In this note we extend previous work on efficiency corrections for cumulant measurements [1,2]. We will discuss the limitations of the methods presented in these papers. Specifically we will consider multiplicity dependent efficiencies as well as a non-binomial efficiency distributions. We will discuss the most simple and straightforward methods to implement those corrections., 11 pages, 7 figures
Published: 2016
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47. NA61/SHINE Collaboration

Author: M. Ravonel, Michael Deveaux, Y. Nagai, S. Puławski, A. Garibov, A. Wickremasinghe, H. J. Mathes, M. Maćkowiak-Pawłowska, M. Roth, Mateusz Baszczyk, Zbigniew Wlodarczyk, Maciej Rybczyński, Y. Ali, S.A. Bunyatov, Tatiana Lazareva, D. Kolev, Antoni Aduszkiewicz, P. Podlaski, E. Richter-Wąs, Marek Gaździcki, M. Słodkowski, V. I. Kolesnikov, G. B. Mills, Andrzej Rybicki, A. D. Marino, J. Stepaniak, J. Puzović, K. Kowalik, D. Tefelski, A. Marchionni, P. Staszel, V. Tereshchenko, B. Łysakowski, St Mrówczyński, A. Blondel, A. Rustamov, W. Dominik, S. R. Johnson, A. Korzenev, T. Matulewicz, M. Walewski, A. Taranenko, T. Antičić, A. Sadovsky, Alexey Krasnoperov, A. V. Brandin, A. Marcinek, Antonio Ereditato, B. Baatar, A. Bravar, Dieter Røhrich, O. Wyszyński, K. Marton, A. Wojtaszek-Szwarc, K. Kadija, F.F. Valiev, A. Yu. Seryakov, M. Strikhanov, S. V. Morozov, E. Kaptur, A. Ivashkin, O. Petukhov, Alberica Toia, A. Haesler, Vladimir Vechernin, G. L. Melkumov, S. Kowalski, J. Brzychczyk, B. A. Popov, Darko Veberič, M. Ćirković, Dag Larsen, M. Naskręt, R. Tsenov, A. O. Merzlaya, C. Francois, B. Messerly, Wojciech Kucewicz, I. Selyuzhenkov, R. Renfordt, V. V. Lyubushkin, V. Paolone, M. Bogomilov, G. Stefanek, Ludwik Turko, E. D. Zimmerman, P. Dorosz, R. A. Rameika, B. T. Rumberger, M. B. Golubeva, B. Lundberg, K. Schmidt, C. Wilkinson, W. Rauch, D. Manić, H. Ströbele, Katarzyna Grebieszkow, S. Bhosale, V. Klochkov, Vladimir Kovalenko, R. Zwaska, A. Damyanova, Tobiasz Czopowicz, J. Dumarchez, M. Posiadala, Vitalii Ozvenchuk, Viktor Matveev, M. Kuich, G. A. Feofilov, S. Igolkin, A. B. Kurepin, A. I. Malakhov, E. Rondio, L. Zambelli, Z. Fodor, V. A. Kireyeu, A. E. Herve, P. Seyboth, A. Snoch, N. Davis, Andras Laszlo, Michal Koziel, Evgeny Andronov, Adam Bzdak, J. Hylen, Ł. Mik, R. Ulrich, Ralph Engel, T. Susa, C. Pistillo, M. Unger, B. Maksiak, R. Planeta, Miroslaw Marek Kielbowicz, A. Tefelska, F. Guber, O. Busygina, M. Lewicki, M. Pavin, and H. Cherif
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, 010306 general physics, 01 natural sciences, Visual arts
Published: 2017
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48. Wounded-quark Emission Function in Asymmetric Heavy-ion Collisions

Author: P. Gutowski, Adam Bzdak, and M. Barej
Subjects: Nuclear physics, Physics, Quark, General Physics and Astronomy, Heavy ion, Function (mathematics)
Published: 2019
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49. Wounded Source Models Versus Experimental Results from RHIC

Author: Adam Bzdak, M. Barej, and P. Gutowski
Subjects: Physics, Nuclear physics, General Physics and Astronomy
Published: 2019
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50. Multiparticle long-range rapidity correlations from fluctuation of the fireball longitudinal shape

Author: Piotr Bozek and Adam Bzdak
Subjects: Particle physics, Nuclear Theory, nucl-th, FOS: Physical sciences, 01 natural sciences, Atomic, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Particle and Plasma Physics, Correlation function, Quantum mechanics, 0103 physical sciences, Rapidity, Nuclear, 010306 general physics, Nuclear theory, Physics, Range (particle radiation), 010308 nuclear & particles physics, hep-ex, Molecular, Multiplicity (mathematics), hep-ph, Nuclear & Particles Physics, High Energy Physics - Phenomenology, Distribution function, Orthogonal polynomials
Abstract: We calculate the genuine long-range multi-particle rapidity correlation functions, $C_{n}(y_1,...,y_n)$ for $n=3,4,5,6$, originating from fluctuations of the fireball longitudinal shape. In these correlation functions any contribution from the short-range two-particle correlations, and in general up to $(n-1)$-particle in $C_n$, is suppressed. The information about the fluctuating fireball shape in rapidity is encoded in the cumulants of coefficients of the orthogonal polynomial expansion of particle distributions in rapidity., Comment: 8 pages
Published: 2016
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