Production of $$\Lambda $$ Λ -hyperons in inelastic p+p interactions at 158 $${\mathrm{GeV}}\!/\!c$$ GeV / c

Aduszkiewicz, A.; Ali, Y.; Andronov, Evgeny; Antičić, T.; Antoniou, N. G.; Baatar, B.; Bay, F.; Blondel, A.; Bogomilov, M.; Brandin, A. V.; Bravar, A.; Brzychczyk, J.; Bunyatov, S.A.; Busygina, O.; Christakoglou, P.; Ćirković, M.; Czopowicz, T.; Damyanova, A.; Davis, N.; Dembinski, H.-P.; Deveaux, M.; Diakonos, F. Κ.; Luise, S. Di; Dominik, W.; Dumarchez, J.; Dynowski, K.; Engel, R.; Ereditato, A.; Феофилов, Г.; Fodor, Z.; Гарибов, А. А.; Gaździcki, M.; Golubeva, M.; Grebieszkow, K.; Grzeszczuk, A.; Guber, F.; Haesler, A.; Hasegawa, T.; Hervé, A. E.; Hierholzer, M.; Igolkin, S. N.; Ivashkin, A.; Johnson, S.; Kadija, K.; Kapoyannis, A. S.; Kaptur, E.; Kisiel, J.; Kobayashi, Toshio; Kolesnikov, V.; Kolev, D.; Kondratiev, V.; Korzenev, A.; Kowalik, K.; Kowalski, S.; Kozieł, M.; Krasnoperov, A.; Kuich, M.; Kurepin, A.; Larsen, D.; László, Á.; Lewicki, Maciej Piotr; Lyubushkin, V.; Maćkowiak-Pawłowska, M.; Maksiak, B.; Malakhov, A.; Manić, D.; Marcinek, A.; Marino, A. D.; Márton, K.; Mathes, H. J.; Matulewicz, T.; Matveev, V.; Melkumov, G. L.; Messerly, B.; Mills, G. B.; Morozov, S. V.; Mrówczyński, S.; Nagai, Y.; Nakadaira, T.; Naskręt, M.; Nirkko, M.; Nishikawa, K.; Panagiotou, A.; Paolone, V.; Pavin, M.; Petukhov, O.; Pistillo, C.; Płaneta, R.; Popov, Б.; Posiadała, M.; Puławski, S.; Puzović, J.; Rauch, W.; Ravonel, M.; Redij, A.; Renfordt, R.; Richter-Wąs, E.; Robert, A.; Röhrich, D.; Rondio, E.; Roth, M.; Rubbia, A.; Rumberger, B. T.; Rustamov, A.; Rybczyński, M.; Sadovsky, A.; Sakashita, K.; Schmidt, K.; Sekiguchi, T.; Selyuzhenkov, I.; Seryakov, A. Yu.; Seyboth, P.; Sgalaberna, D.; Shibata, M.; Słodkowski, M.; Staszel, P.; Stefanek, G.; Steṕaniak, J.; Ströbele, H.; Šuša, T.; Szuba, M.; Tada, M.; Taranenko, A.; Tefelski, D.; Терещенко, В.; Tsenov, R.; Turko, L.; Ulrich, R.; Unger, Michael; Vassiliou, M.; Veberič, D.; Vechernin, V.; Vesztergombi, G.; Vinogradov, L.; Wilczek, A.; Włodarczyk, Z.; Wojtaszek-Szwarć, A.; Wyszyński, O.; Zambelli, L.; Zimmerman, E. D.

doi:10.1140/epjc/s10052-016-4003-2

Cited by 28 publications

(28 citation statements)

References 48 publications

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“…Measurements of Λ-hyperon production in the energy range of NICA are mainly performed by bubble chamber experiments and only a single data point was obtained recently by the SPS NA61/SHINE experiment at √ s N N = 17.3 GeV [14]. The results for Λ-hyperons are presented in Fig.…”

Section: (Anti)protons and λ-Hyperonsmentioning

confidence: 99%

“…Figure 6: The slope parameter T for hadrons in bins of normalized rapidity y/y beam from inelastic pp collisions at 6.2-17.3 GeV. The experimental data are taken from [13], [12], and [14]. The dashed line indicate a fit to a Gaussian function (see text for details).…”

Section: Charged Pionsmentioning

confidence: 99%

“…6 as a function of normalized rapidity y/y beam . The experimental data are taken from [13], [12], and [14], and for each hadron specie we combined the measurements at all collision energies together. The rapidity dependence for the slope parameter follows a Gaussian shape at all energies and for all hadrons.…”

Section: Charged Pionsmentioning

confidence: 99%

“…There are also several review papers, which summarize data and discuss the excitation function of hadron yields in a range of collision energies from several GeV up to LHC energies (see for example [5][6][7]). These old papers, however, rely on a too broad region of energies as compared to the NICA range and do not include the recent measurements from CERN/SPS [9][10][11][12][13][14]. Moreover, early bubble chamber applications are typically limited to small data samples (of the order of 10 4 events or so) and have no particle identification, while old spectrometer measurements were done with small solid angle devices and have no sufficient acceptance.…”

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confidence: 99%

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A New Review of Excitation Functions of Hadron Production in pp Collisions in the NICA Energy Range

Kolesnikov

Kireyeu

Lenivenko

et al. 2020

Phys. Part. Nuclei Lett.

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Data on hadron multiplicities from inelastic proton-proton interactions in the energy range of the NICA collider have been compiled. The compilation includes recent results from the NA61/SHINE and NA49 experiments at the CERN SPS accelerator. New parameterizations for excitation functions of mean multiplicities π ± , K ± , K 0 S , Λ , p , p are obtained in the region of collision energies 3 < √ s N N < 31 GeV. The energy dependence of the particle yields, as well as variation of rapidity and transverse momentum distributions are discussed. A standalone algorithm for hadron phase space generation in pp collisions is suggested and compared to model predictions using an example of the PHQMD generator. The investigation has been performed at the Laboratory of High Energy Physics, JINR PACS: 13.75.Cs; 13.85.Ni; 25.60.Dz * Vadim.Kolesnikov@cern.ch IntroductionThe NICA accelerator complex is under construction at JINR (Dubna). It would offer a record luminosity (reaching 10 27 cm −2 c −1 ) for heavy-ion collisions in the energy range 4 < √ s N N < 11 GeV [1]. Proton-proton collisions at NICA can be studied in the energy range from 4 to 25 GeV. The physics program of the MultiPurpose Detector (MPD) at the NICA collider is aimed at experimental exploration of a yet poorly known region of the QCD phase diagram of the highest net-baryon density with an emphasis on the nature of the transition from hadronic to quark-gluon degrees of freedom, modification of hadron properties in dense nuclear matter, and search for the signals about the critical end point [2]. However, the interpretation of experimental results from nucleus-nucleus interactions showing novel phenomena has to rely on comparison to the corresponding data from elementary collisions. For example, the excitation function of the strangeness-to-entropy ratio, which behaves differently in heavy-ion and pp collisions, may serve as an important probe in the study of the deconfinement phase [3] or can be related to chiral symmetry restoration in the dense hadronic matter [4].Microscopic models of nucleus-nucleus collisions, which utilize multiple physics phenomena in strongly interacting matter, are useful tools for explaining experimental results and making new predictions. Data on hadron yields from elementary inelastic collisions are the essential input for such kind of models permitting to establish details of the evolution of particle inclusive production from elementary to nuclear interactions. Experimental studies of hadron production in pp collisions have been performed at many laboratories over 60 th -80 th of the last century. There are also several review papers, which summarize data and discuss the excitation function of hadron yields in a range of collision energies from several GeV up to LHC energies (see for example [5][6][7]). These old papers, however, rely on a too broad region of energies as compared to the NICA range and do not include the recent measurements from CERN/SPS [9][10][11][12][13][14]. Moreover, early bubble chamber applications are typic...

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Section: (Anti)protons and λ-Hyperonsmentioning

confidence: 99%

Section: Charged Pionsmentioning

confidence: 99%

Section: Charged Pionsmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

A New Review of Excitation Functions of Hadron Production in pp Collisions in the NICA Energy Range

Kolesnikov

Kireyeu

Lenivenko

et al. 2020

Phys. Part. Nuclei Lett.

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“…Figure 6: Energy dependence of Λ yield (left) and Λ to π ratio (right) at 40 and 150 GeV/c compared to p+p and ion-ion world data. NA61/SHINE measured two-dimensional (rapidity versus transverse momentum) sectra of Λ hyperons in p+p interactions at 40 [23] and 158 GeV/c [24]. Figure 6 (left) presents the energy dependence of the total Λ yield compared with world results from p+p interactions and EPOS 1.99 model predictions.…”

Section: Charged Hadron Spectramentioning

confidence: 99%

News on spectra from the NA61/SHINE experiment.

Kuich¹

2017

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2017)

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NA61/SHINE is a fixed target experiment at the CERN Super-Proton-Synchrotron. The main goals of the experiment are to discover the critical point of strongly interacting matter and study the properties of the onset of deconfinement. In order to reach these goals, a study of hadron production properties is performed in nucleus-nucleus, proton-proton and proton-nucleus interactions as a function of collision energy and size of the colliding nuclei. In this talk, recent results on particle production in p+p interactions, as well as Be+Be and Ar+Sc collisions in the SPS energy range are reviewed. Transverse momentum, transverse mass and rapidity spectra obtained with various analysis methods are presented. Surprises in studies of signatures of onset of deconfinement are discussed. The results are compared with available world data.

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The Muon Puzzle in cosmic-ray induced air showers and its connection to the Large Hadron Collider

Albrecht

Cazón

Dembinski

et al. 2022

Astrophys Space Sci

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High-energy cosmic rays are observed indirectly by detecting the extensive air showers initiated in Earth’s atmosphere. The interpretation of these observations relies on accurate models of air shower physics, which is a challenge and an opportunity to test QCD under extreme conditions. Air showers are hadronic cascades, which give rise to a muon component through hadron decays. The muon number is a key observable to infer the mass composition of cosmic rays. Air shower simulations with state-of-the-art QCD models show a significant muon deficit with respect to measurements; this is called the Muon Puzzle. By eliminating other possibilities, we conclude that the most plausible cause for the muon discrepancy is a deviation in the composition of secondary particles produced in high-energy hadronic interactions from current model predictions. The muon discrepancy starts at the TeV scale, which suggests that this deviation is observable at the Large Hadron Collider. An enhancement of strangeness production has been observed at the LHC in high-density events, which can potentially explain the puzzle, but the impact of the effect on forward produced hadrons needs further study, in particular with future data from oxygen beam collisions.

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Production of $$\Lambda $$ Λ -hyperons in inelastic p+p interactions at 158 $${\mathrm{GeV}}\!/\!c$$ GeV / c

Cited by 28 publications

References 48 publications

A New Review of Excitation Functions of Hadron Production in pp Collisions in the NICA Energy Range

A New Review of Excitation Functions of Hadron Production in pp Collisions in the NICA Energy Range

News on spectra from the NA61/SHINE experiment.

The Muon Puzzle in cosmic-ray induced air showers and its connection to the Large Hadron Collider

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