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We present an optical potential analysis of the antiproton-proton interactions at low energies. Our optical potential is purely phenomenological, and has been parametrized on data recently obtained by the Obelix Collaboration at momenta…

核理论 · 物理学 2009-11-06 A. Bianconi , G. Bonomi , M. P. Bussa , E. Lodi Rizzini , L. Venturelli , A. Zenoni

Focusing on the recent measurements of the scattering processes $\bar{\Lambda} p \rightarrow \bar{\Lambda} p$ and $\Lambda p \rightarrow \Lambda p$ reported by BESIII, we offer a dynamical interpretation of the differences in the measured…

高能物理 - 唯象学 · 物理学 2025-02-19 Xiao-Yun Wang , Yuan Gao , Xiang Liu

We study decuplet baryons from meson-baryon interactions, in particular, $\Delta$ and $\Omega$ baryons from P-wave $I=3/2$ $N\pi$ and $I=0$ $\Xi\bar{K}$ interactions, respectively. The interaction potentials are calculated in the HAL QCD…

高能物理 - 格点 · 物理学 2021-12-01 Kotaro Murakami , Yutaro Akahoshi , Sinya Aoki , Kenji Sasaki

A search is conducted for new resonant and non-resonant high-mass phenomena in dielectron and dimuon final states. The search uses 36.1 fb$^{-1}$ of proton-proton collision data, collected at $\sqrt{s}$ = 13 TeV by the ATLAS experiment at…

高能物理 - 实验 · 物理学 2017-11-16 ATLAS Collaboration

Some experiments on LEAR obtained unusual behavior of the $p\bar p$ interaction near the threshold. The experiments on $p\bar p$ forvard scattering detected zeros and big variation of $\rho$ and at the same time a smooth rising of…

高能物理 - 唯象学 · 物理学 2014-11-17 M. Majewski , G. V. Meshcheryakov , V. A. Meshcheryakov

Hadrons measured in proton-proton collisions at sqrt(s) = 0.9 and 7 TeV with the ALICE detector have been identified using various techniques: the specific energy loss and the time-of flight information for charged pions, kaons and protons,…

高能物理 - 实验 · 物理学 2019-08-14 H. Oeschler

We reconsider a method based on dispersion theory, that allows one to extract the scattering length of any two-baryon system from corresponding final-state interactions in production reactions. The application of the method to baryon-baryon…

核理论 · 物理学 2013-05-30 A. M. Gasparyan , J. Haidenbauer , C. Hanhart

This search, a type not previously performed at ATLAS, uses a comparison of the production cross sections for $e^+ \mu^-$ and $e^- \mu^+$ pairs to constrain physics processes beyond the Standard Model. It uses $139 \text{fb}^{-1}$ of…

高能物理 - 实验 · 物理学 2022-05-31 ATLAS Collaboration

We study decuplet baryons from meson-baryon interactions in lattice QCD, in particular, $\Delta$ and $\Omega$ baryons from P-wave $I=3/2$ $N\pi$ and $I=0$ $\Xi\bar{K}$ interactions, respectively. Interaction potentials are calculated in the…

高能物理 - 格点 · 物理学 2023-05-01 Kotaro Murakami , Yutaro Akahoshi , Sinya Aoki , Takumi Doi , Kenji Sasaki

Multi-strange baryons are of particular interest in the understanding of particle production mechanisms, as their high strangeness content makes them susceptible to changes in the hadrochemistry of the colliding systems. In ALICE, these…

核实验 · 物理学 2019-08-13 Didier Alexandre

Meson-baryon systems with strangeness content provide a unique laboratory for investigating the strong interaction and testing theoretical models of hadron structure and dynamics. In this work, the measured correlation functions for…

核实验 · 物理学 2025-09-30 ALICE Collaboration

Recent studies by the NPLQCD collaboration of hadronic interactions using lattice QCD are reviewed, with an emphasis on a recent calculation of meson-baryon scattering lengths. Ongoing high-statistics calculations of baryon interactions are…

高能物理 - 格点 · 物理学 2014-11-20 Silas Beane

This work addresses the incorporation of Coulomb interactions into femtoscopy correlation functions (CFs) used to probe hadron interactions. Combining strong contact potentials with Coulomb effects, the derived scattering amplitudes and…

高能物理 - 唯象学 · 物理学 2025-09-26 M. Albaladejo , A. Garcia-Lorenzo , J. Nieves

The measurement of identified charged-hadron production at mid-rapidity ($|y| < 0.5$) performed with the ALICE experiment at the LHC is presented for pp collisions at $\sqrt{s}$ = 900 GeV and 7 TeV and for Pb--Pb collisions at…

高能物理 - 实验 · 物理学 2012-03-28 Roberto Preghenella

In this paper, our goal is to make a simultaneous analysis of the high- and low-P_T parts of the charged-hadron P_T spectrum measured by the ALICE collaboration in central Pb-Pb collisions at sqrt{s}=2.76 TeV at the Large Hadron Collider…

高能物理 - 唯象学 · 物理学 2011-08-22 Thorsten Renk , Hannu Holopainen , Risto Paatelainen , Kari J. Eskola

The study of heavy-flavour mesons and baryons in hadronic collisions provides unique access to the properties of heavy-quark hadronisation in the presence of large partonic densities, where new mechanisms of hadron formation beyond…

高能物理 - 实验 · 物理学 2023-12-18 Jianhui Zhu

A search for new phenomena in final states characterized by high jet multiplicity, an isolated lepton (electron or muon) and either zero or at least three $b$-tagged jets is presented. The search uses 36.1 fb$^{-1}$ of $\sqrt{s}$ = 13 TeV…

高能物理 - 实验 · 物理学 2017-09-28 ATLAS Collaboration

Two-particle correlations at small relative momenta give insight into the size of the emitting source. Of particular interest is the test of hydrodynamic models which predict a universal, apparent decrease of the extent of the system with…

核实验 · 物理学 2019-08-13 Hans Beck

We describe in detail how the different components of a multi-phase transport (AMPT) model, that uses the Heavy Ion Jet Interaction Generator (HIJING) for generating the initial conditions, Zhang's Parton Cascade (ZPC) for modeling partonic…

核理论 · 物理学 2008-11-26 Zi-Wei Lin , Che Ming Ko , Bao-An Li , Bin Zhang , Subrata Pal

This Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton-proton collisions produced by the LHC at sqrt(s) = 7 TeV and recorded by the ATLAS detector. The data sample, collected in…

高能物理 - 实验 · 物理学 2012-08-27 ATLAS Collaboration