Measurements of π- production in 7 Be + 9 Be collisions at beam momenta from 19A to 150 AGeV/c in the NA61/SHINE experiment at the CERN SPS

Standard

Measurements of π^- production in ⁷ Be + ⁹ Be collisions at beam momenta from 19A to 150 AGeV/c in the NA61/SHINE experiment at the CERN SPS : NA61/SHINE Collaboration. / NA61/SHINE Collaboration.

в: European Physical Journal C, Том 80, № 10, 961, 19.10.2020.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{782cb240693442c5adc4bfc0ddd121cf,

title = "Measurements of π- production in 7 Be + 9 Be collisions at beam momenta from 19A to 150 AGeV/c in the NA61/SHINE experiment at the CERN SPS: NA61/SHINE Collaboration",

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 π- mesons produced in the 5% most central7Be + 9Be collisions at beam momenta of 19A, 30A, 40A, 75A and 150AGeV/c obtained by the so-called h- method which does not require any particle identification. The shape of the transverse mass spectra differs from the shapes measured in central Pb + Pb collisions and inelastic p+p interactions. The normalized width of the rapidity distribution decreases with increasing collision energy and is in between the results for inelastic nucleon–nucleon and central Pb + Pb collisions. The mean multiplicity of pions per wounded nucleon in central7Be + 9Be collisions is close to that in central Pb + Pb collisions up to 75AGeV/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.",

keywords = "NUCLEUS-NUCLEUS COLLISIONS, PHASE-TRANSITION, EARLY-STAGE, DECONFINEMENT, DEPENDENCE",

author = "NA61/SHINE Collaboration and A. Acharya and H. Adhikary and A. Aduszkiewicz and Allison, {K. K.} and Andronov, {E. V.} and T. Anti{\'c}i{\'c} and V. Babkin and M. Baszczyk and S. Bhosale and A. Blondel and M. Bogomilov and A. Brandin and A. Bravar and W. Bryli{\'n}ski and J. Brzychczyk and M. Buryakov and O. Busygina and A. Bzdak and H. Cherif and M. {\'C}irkovi{\'c} and M. Csanad and J. Cybowska and T. Czopowicz and A. Damyanova and N. Davis and M. Deliyergiyev and M. Deveaux and A. Dmitriev and W. Dominik and P. Dorosz and J. Dumarchez and R. Engel and Feofilov, {G. A.} and L. Fields and Z. Fodor and A. Garibov and M. Ga{\'z}dzicki and O. Golosov and V. Golovatyuk and M. Golubeva and K. Grebieszkow and Igolkin, {S. N.} and Kovalenko, {V. N.} and Lazareva, {T. V.} and Merzlaya, {A. O.} and Prokhorova, {D. S.} and Серяков, {Андрей Юрьевич} and D. Uzhva and Valiev, {F. F.} and Vechernin, {V. V.}",

note = "Funding Information: This paper presents measurements of inclusive spectra and mean multiplicities of mesons produced in centralBe + Be collisions at beam momenta of 19A, 30A, 40A, 75A and 150 ( and 16.8 GeV) performed by the NA61/SHINE collaboration. These results are part of the strong interactions studies proposed by the NA61/SHINE collaboration [] to investigate the properties of the onset of deconfinement and to search for the possible existence of a critical point in the phase diagram of strongly interacting matter. The first goal of the programme is motivated by the observation of rapid changes of hadron production properties in central Pb + Pb collisions at about 30 by the NA49 experiment [, ] – a sharp peak in the kaon to pion ratio (“horn”), the start of a plateau in the inverse slope parameter for kaons (“step”), and a steepening of the increase of pion production per wounded nucleon with increasing collision energy (“kink”). These findings were predicted and interpreted as the onset of deconfinement [, ]. They were recently confirmed by the RHIC beam energy scan programme [], and the interpretation is supported by the LHC results (see Ref. [] and references therein). Experimentally the goals of the NA61/SHINE strong interaction programme are persued by a two dimensional scan in collision energy and nuclear mass number of colliding nuclei. The scan allows to explore systematically the phase diagram of strongly interacting matter []. In particular, the analysis of the existing data within the framework of statistical models suggests that by increasing collision energy one increases temperature and decreases baryon chemical potential of strongly interacting matter at freeze-out [], whereas by increasing nuclear mass number of the colliding nuclei one decreases the temperature [–]. Funding Information: We would like to thank the CERN EP, BE, HSE and EN Departments for the strong support of NA61/SHINE. We thank A. Kubala–Kuku{\'s} and D. Bana{\'s} from the Institute of Physics, Jan Kochanowski University for the target purity measurements with the WDXRF technique. This work was supported by the Hungarian Scientific Research Fund (grant NKFIH 123842/123959), the Polish Ministry of Science and Higher Education (grants 667/N-CERN/2010/0, NN 202 48 4339, NN 202 23 1837 and DIR/WK/2016/2017/10-1), the National Science Centre Poland (grants 2014/14/E/ST2/00018, 2014/15/B/ST2 /02537 and 2015/18/M/ST2/00125, 2015/19/N/ST2 /01689, 2016/23/B/ST2/00692, 2017/25/N/ST2/02575, 2018/30/A/ST2/00226, 2018/31/G/ST2/03910), the Russian Science Foundation, grant 16-12-10176 and 17-72-20045, the Russian Academy of Science and the Russian Foundation for Basic Research (grants 08-02-00018, 09-02-00664 and 12-02-91503-CERN), the Russian Foundation for Basic Research (RFBR) funding within the research project no. 18-02-00086, the National Research Nuclear University MEPhI in the framework of the Russian Academic Excellence Project (contract No. 02.a03.21.0005, 27.08.2013), the Ministry of Science and Higher Education of the Russian Federation, Project “Fundamental properties of elementary particles and cosmology” No 0723-2020-0041, the European Union{\textquoteright}s Horizon 2020 research and innovation programme under grant agreement No. 871072, the Ministry of Education, Culture, Sports, Science and Technology, Japan, Grant-in-Aid for Scientific Research (grants 18071005, 19034011, 19740162, 20740160 and 20039012), the German Research Foundation (grant GA 1480/8-1), the Bulgarian Nuclear Regulatory Agency and the Joint Institute for Nuclear Research, Dubna (bilateral contract No. 4799-1-18/20), Bulgarian National Science Fund (grant DN08/11), Ministry of Education and Science of the Republic of Serbia (grant OI171002), Swiss Nationalfonds Foundation (grant 200020117913/1), ETH Research Grant TH-01 07-3 and the Fermi National Accelerator Laboratory (Fermilab), a U.S. Department of Energy, Office of Science, HEP User Facility managed by Fermi Research Alliance, LLC (FRA), acting under Contract No. DE-AC02-07CH11359 and the IN2P3-CNRS (France). Publisher Copyright: {\textcopyright} 2020, The Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = oct,

day = "19",

doi = "10.1140/epjc/s10052-020-08514-6",

language = "English",

volume = "80",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "10",

}

RIS

TY - JOUR

T1 - Measurements of π- production in 7 Be + 9 Be collisions at beam momenta from 19A to 150 AGeV/c in the NA61/SHINE experiment at the CERN SPS

T2 - NA61/SHINE Collaboration

AU - NA61/SHINE Collaboration

AU - Acharya, A.

AU - Adhikary, H.

AU - Aduszkiewicz, A.

AU - Allison, K. K.

AU - Andronov, E. V.

AU - Antićić, T.

AU - Babkin, V.

AU - Baszczyk, M.

AU - Bhosale, S.

AU - Blondel, A.

AU - Bogomilov, M.

AU - Brandin, A.

AU - Bravar, A.

AU - Bryliński, W.

AU - Brzychczyk, J.

AU - Buryakov, M.

AU - Busygina, O.

AU - Bzdak, A.

AU - Cherif, H.

AU - Ćirković, M.

AU - Csanad, M.

AU - Cybowska, J.

AU - Czopowicz, T.

AU - Damyanova, A.

AU - Davis, N.

AU - Deliyergiyev, M.

AU - Deveaux, M.

AU - Dmitriev, A.

AU - Dominik, W.

AU - Dorosz, P.

AU - Dumarchez, J.

AU - Engel, R.

AU - Feofilov, G. A.

AU - Fields, L.

AU - Fodor, Z.

AU - Garibov, A.

AU - Gaździcki, M.

AU - Golosov, O.

AU - Golovatyuk, V.

AU - Golubeva, M.

AU - Grebieszkow, K.

AU - Igolkin, S. N.

AU - Kovalenko, V. N.

AU - Lazareva, T. V.

AU - Merzlaya, A. O.

AU - Prokhorova, D. S.

AU - Серяков, Андрей Юрьевич

AU - Uzhva, D.

AU - Valiev, F. F.

AU - Vechernin, V. V.

N1 - Funding Information: This paper presents measurements of inclusive spectra and mean multiplicities of mesons produced in centralBe + Be collisions at beam momenta of 19A, 30A, 40A, 75A and 150 ( and 16.8 GeV) performed by the NA61/SHINE collaboration. These results are part of the strong interactions studies proposed by the NA61/SHINE collaboration [] to investigate the properties of the onset of deconfinement and to search for the possible existence of a critical point in the phase diagram of strongly interacting matter. The first goal of the programme is motivated by the observation of rapid changes of hadron production properties in central Pb + Pb collisions at about 30 by the NA49 experiment [, ] – a sharp peak in the kaon to pion ratio (“horn”), the start of a plateau in the inverse slope parameter for kaons (“step”), and a steepening of the increase of pion production per wounded nucleon with increasing collision energy (“kink”). These findings were predicted and interpreted as the onset of deconfinement [, ]. They were recently confirmed by the RHIC beam energy scan programme [], and the interpretation is supported by the LHC results (see Ref. [] and references therein). Experimentally the goals of the NA61/SHINE strong interaction programme are persued by a two dimensional scan in collision energy and nuclear mass number of colliding nuclei. The scan allows to explore systematically the phase diagram of strongly interacting matter []. In particular, the analysis of the existing data within the framework of statistical models suggests that by increasing collision energy one increases temperature and decreases baryon chemical potential of strongly interacting matter at freeze-out [], whereas by increasing nuclear mass number of the colliding nuclei one decreases the temperature [–]. Funding Information: We would like to thank the CERN EP, BE, HSE and EN Departments for the strong support of NA61/SHINE. We thank A. Kubala–Kukuś and D. Banaś from the Institute of Physics, Jan Kochanowski University for the target purity measurements with the WDXRF technique. This work was supported by the Hungarian Scientific Research Fund (grant NKFIH 123842/123959), the Polish Ministry of Science and Higher Education (grants 667/N-CERN/2010/0, NN 202 48 4339, NN 202 23 1837 and DIR/WK/2016/2017/10-1), the National Science Centre Poland (grants 2014/14/E/ST2/00018, 2014/15/B/ST2 /02537 and 2015/18/M/ST2/00125, 2015/19/N/ST2 /01689, 2016/23/B/ST2/00692, 2017/25/N/ST2/02575, 2018/30/A/ST2/00226, 2018/31/G/ST2/03910), the Russian Science Foundation, grant 16-12-10176 and 17-72-20045, the Russian Academy of Science and the Russian Foundation for Basic Research (grants 08-02-00018, 09-02-00664 and 12-02-91503-CERN), the Russian Foundation for Basic Research (RFBR) funding within the research project no. 18-02-00086, the National Research Nuclear University MEPhI in the framework of the Russian Academic Excellence Project (contract No. 02.a03.21.0005, 27.08.2013), the Ministry of Science and Higher Education of the Russian Federation, Project “Fundamental properties of elementary particles and cosmology” No 0723-2020-0041, the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 871072, the Ministry of Education, Culture, Sports, Science and Technology, Japan, Grant-in-Aid for Scientific Research (grants 18071005, 19034011, 19740162, 20740160 and 20039012), the German Research Foundation (grant GA 1480/8-1), the Bulgarian Nuclear Regulatory Agency and the Joint Institute for Nuclear Research, Dubna (bilateral contract No. 4799-1-18/20), Bulgarian National Science Fund (grant DN08/11), Ministry of Education and Science of the Republic of Serbia (grant OI171002), Swiss Nationalfonds Foundation (grant 200020117913/1), ETH Research Grant TH-01 07-3 and the Fermi National Accelerator Laboratory (Fermilab), a U.S. Department of Energy, Office of Science, HEP User Facility managed by Fermi Research Alliance, LLC (FRA), acting under Contract No. DE-AC02-07CH11359 and the IN2P3-CNRS (France). Publisher Copyright: © 2020, The Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/10/19

Y1 - 2020/10/19

N2 - 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 π- mesons produced in the 5% most central7Be + 9Be collisions at beam momenta of 19A, 30A, 40A, 75A and 150AGeV/c obtained by the so-called h- method which does not require any particle identification. The shape of the transverse mass spectra differs from the shapes measured in central Pb + Pb collisions and inelastic p+p interactions. The normalized width of the rapidity distribution decreases with increasing collision energy and is in between the results for inelastic nucleon–nucleon and central Pb + Pb collisions. The mean multiplicity of pions per wounded nucleon in central7Be + 9Be collisions is close to that in central Pb + Pb collisions up to 75AGeV/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.

AB - 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 π- mesons produced in the 5% most central7Be + 9Be collisions at beam momenta of 19A, 30A, 40A, 75A and 150AGeV/c obtained by the so-called h- method which does not require any particle identification. The shape of the transverse mass spectra differs from the shapes measured in central Pb + Pb collisions and inelastic p+p interactions. The normalized width of the rapidity distribution decreases with increasing collision energy and is in between the results for inelastic nucleon–nucleon and central Pb + Pb collisions. The mean multiplicity of pions per wounded nucleon in central7Be + 9Be collisions is close to that in central Pb + Pb collisions up to 75AGeV/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.

KW - NUCLEUS-NUCLEUS COLLISIONS

KW - PHASE-TRANSITION

KW - EARLY-STAGE

KW - DECONFINEMENT

KW - DEPENDENCE

UR - http://www.scopus.com/inward/record.url?scp=85092773387&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-020-08514-6

DO - 10.1140/epjc/s10052-020-08514-6

M3 - Article

AN - SCOPUS:85092773387

VL - 80

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 10

M1 - 961

ER -

ID: 70771135

Measurements of π- production in 7 Be + 9 Be collisions at beam momenta from 19A to 150 AGeV/c in the NA61/SHINE experiment at the CERN SPS: NA61/SHINE Collaboration

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Measurements of π^- production in ⁷ Be + ⁹ Be collisions at beam momenta from 19A to 150 AGeV/c in the NA61/SHINE experiment at the CERN SPS: NA61/SHINE Collaboration