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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…

Nuclear Theory · Physics 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…

High Energy Physics - Phenomenology · Physics 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…

High Energy Physics - Lattice · Physics 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…

High Energy Physics - Experiment · Physics 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…

High Energy Physics - Phenomenology · Physics 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,…

High Energy Physics - Experiment · Physics 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…

Nuclear Theory · Physics 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…

High Energy Physics - Experiment · Physics 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…

High Energy Physics - Lattice · Physics 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…

Nuclear Experiment · Physics 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…

Nuclear Experiment · Physics 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…

High Energy Physics - Lattice · Physics 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…

High Energy Physics - Phenomenology · Physics 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…

High Energy Physics - Experiment · Physics 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…

High Energy Physics - Phenomenology · Physics 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…

High Energy Physics - Experiment · Physics 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…

High Energy Physics - Experiment · Physics 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…

Nuclear Experiment · Physics 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…

Nuclear Theory · Physics 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…

High Energy Physics - Experiment · Physics 2012-08-27 ATLAS Collaboration