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Based on the measured transverse mass spectra of \pi^-, K^- and \bar p at the RHIC energy \sqrt {s_{NN}} =130GeV, di-omega productions from baryon-baryon reactions in hadronic matter are studied. Results about the (\Omega \Omega)_{0^+}…

核理论 · 物理学 2018-01-17 X. -M. Xu , P. Wang , Y. W. Yu

Production yields of single-$\Lambda$ hypernuclei from simulated peripheral annihilations of antiprotons after capture on various target nuclei are reported. The initial annihilation process and the production of excited hypernuclei are…

We present the scaling properties of Lambda, Xi, Omega and their anti-particles produced at mid-rapidity in Au+Au collisions at RHIC at sqrt(s_NN) = 200 GeV. The yield of multi-strange baryons per participant nucleon increases from…

核实验 · 物理学 2008-11-26 STAR Collaboration , J. Adams

The strangeness-exchange reaction pi + Y -> K- + N is shown to be the dynamical origin of chemical equilibration for K- production in heavy-ion collisions up to beam energies of 10 A GeV. The hyperons occurring in this process are produced…

高能物理 - 唯象学 · 物理学 2009-11-10 J. Cleymans , A. Foerster , H. Oeschler , K. Redlich , F. Uhlig

A measurement of strange baryon and antibaryon production in Pb-Pb collisions has been carried out by the NA57 experiment at the CERN SPS, with 40 and 158 A GeV/c beam momentum. Results on $\Lambda$, $\Xi$ and $\Omega$ hyperon yields at…

核实验 · 物理学 2012-08-27 The NA57 Collaboration

Positive pion and kaon production from Au+Au reactions have been measured as a function of beam energy over the range 2.0-10.7~AGeV. Both the kaon and the pion production cross-sections at mid-rapidity are observed to increase steadily with…

核实验 · 物理学 2010-01-11 L. Ahle

In the paper, we present a detailed discussion on the $\Xi_{cc}$ production at a fixed target experiment at the LHC (After@LHC). The doubly charmed baryon $\Xi_{cc}$ is produced via the channel, ${\rm Proton} + {\rm Proton}\to\Xi_{cc}+X$.…

高能物理 - 唯象学 · 物理学 2014-04-10 Gu Chen , Xing-Gang Wu , Jia-Wei Zhang , Hua-Yong Han , Hai-Bing Fu

In this paper, decay widths of the doubly heavy baryons ($\Xi_{cc} ~\text{and} ~\Xi_{bc}$) production are theoritically calculated in the whole phase space through $W^+ \to \Xi_{cc}+ \bar{c}+\bar{s}$ and $W^+ \to \Xi_{bc}+ \bar{b}+\bar{s}$,…

高能物理 - 唯象学 · 物理学 2022-02-22 Peng-Hui Zhang , Lei Guo , Xu-Chang Zheng , Qi-Wei Ke

A simple method to explore the interaction of antihyperons in nuclei by exclusive hyperon-antihyperon pair production close to threshold in antiproton nucleus interactions is proposed. Due to energy and momentum conservation event-by-event…

核实验 · 物理学 2008-11-26 Josef Pochodzalla

Systematic investigations of dilepton production are performed at the SIS accelerator of GSI with the HADES spectrometer. The goal of this program is a detailed understanding of di-electron emission from hadronic systems at moderate…

New experimental results of NA49 on hyperon production in central Pb+Pb collisions at the SPS energies are presented. In particular, measurements of $\Lambda$ production at 30 A$\cdot$GeV and $\Xi$ and $\Omega$ production at 40 A$\cdot$GeV…

核实验 · 物理学 2019-08-14 Michael Mitrovski

We have searched for $\Theta^{+}$ via $\pi^{-}p \to K^{-}X$ reaction using 1.87 and 1.92 GeV/c $\pi^{-}$ beam at the K2 beam line of the KEK 12 GeV Proton Synchrotron. In the missing mass spectrum at beam momentum of 1.92 GeV/$c$, a bump…

核实验 · 物理学 2008-11-26 K. Miwa

The $\bar{K} + N \to K + \Xi$ reaction is studied for center-of-momentum energies ranging from threshold to 3 GeV in an effective Lagrangian approach that includes the hyperon $s$- and $u$-channel contributions as well as a phenomenological…

核理论 · 物理学 2015-06-29 Benjamin C. Jackson , Yongseok Oh , H. Haberzettl , K. Nakayama

Exclusive data on the reactions pp -> ppK+K- and pp -> pK+ Lambda/Sigma0 have been taken at the cooler synchrotron COSY close to threshold. At equal excess energies, an enhancement of the Lambda/Sigma0 ratio by one order of magnitude has…

We report recent results on the dynamics of strange hadrons in two-body reactions relevant for near-threshold production in heavy-ion collisions at GSI/FAIR and NICA-Dubna. In particular, $\bar K N$ scattering in hot and dense nuclear…

高能物理 - 唯象学 · 物理学 2016-02-17 Daniel Cabrera , Laura Tolos , Jörg Aichelin , Elena bratkovskaya

The $K^-/K^+$ ratio produced in heavy-ion collisions at GSI energies is studied. The in-medium properties at finite temperature of the hadrons involved are included, paying a special attention to the in-medium properties of antikaons. Using…

核理论 · 物理学 2009-11-10 Laura Tolós , Artur Polls , Angels Ramos , Jürgen Schaffner-Bielich

We discuss strangeness production close to threshold in p+A and A+A collision. Comparing the body of available K+, K0, K-, and Lambda data with the IQMD transport code and for some key observables as well with the HSD transport code, we…

In this proceedings, we present our first measurements of $\phi$ meson and $\Xi^-$ hyperon production in Au+Au collisions at $\sqrt{s_{NN}}$ = 3 GeV. Various models including thermal and transport model calculations are compared to data,…

核实验 · 物理学 2021-11-01 Yingjie Zhou

We present results on the K*(892)+ production in proton-proton collisions at a beam energy of E = 3.5 GeV, which is hitherto the lowest energy at which this mesonic resonance has been observed in nucleon-nucleon reactions. The data are…

The production of the $K^*(892)$ strange resonance in Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV LHC energy is analyzed within the integrated hydrokinetic model (iHKM) at different equations of state of superdense matter. The similar…

高能物理 - 唯象学 · 物理学 2018-03-14 V. M. Shapoval , P. Braun-Munzinger , Yu. M. Sinyukov