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First Results on the Revealing of Cognate Ancestors among the Particles of the Primary Cosmic Rays That Gave Rise to Extensive Air Showers Observed by the GELATICA Network
/ Verbetsky, Yuri (Tbilisi, Inst. Phys.) ; Svanidze, Manana (Tbilisi, Inst. Phys.) ; Ruimi, Ophir (Hebrew U.) ; Wibig, Tadeusz (Lodz U.) ; Kakabadze, Levan (Tbilisi, Inst. Phys.) ; Homola, Piotr (Cracow, INP) ; Alvarez-Castillo, David E (Cracow, INP) ; Beznosko, Dmitry (Georgia Coll. State U.) ; Sarkisyan-Grinbaum, Edward K (CERN ; Texas U., Arlington) ; Bar, Olaf (Cracow Tech. U.) et al.
For the data on the observation times and directions of the motion of extensive air showers, which are observed at two stations of the GELATICA network, for the first time we apply the method we have developed previously for identifying pairs of mutually remote extensive air showers, the ancestor particles of which arose, possibly, in a single process. A brief description of the GELATICA network, a review of the properties of used samples of data on shower observations at two stations of the network during the 2019–2021 session, and the result of applying the above method to them are given. [...]
2022 - 15 p.
- Published in : Symmetry 14 (2022) 1749
Fulltext: PDF;
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Properties of Chemical and Kinetic Freeze-Outs in High-Energy Nuclear Collisions
/ Liu, Fu-Hu (Shanxi U.) ; Fakhraddin, Sakina (Qassim U. ; Sana U.) ; Lacey, Roy A (SUNY, Stony Brook, Chem. Dept.) ; Sahoo, Raghunath (Indian Inst. Tech., Indore) ; Sarkisyan-Grinbaum, Edward K (CERN ; Texas U., Arlington) ; Singh, Bhartendu K (Banaras Hindu U.)
2018 - 3 p.
- Published in : Adv. High Energy Phys. 2018 (2018) 1-3
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Searching for hidden matter with long-range angular correlations at $e^+e^-$ colliders
/ Pérez-Ramos, Redamy (IPSA, Paris ; Paris, LPTHE) ; Sanchis-Lozano, Miguel-Angel (Valencia U., IFIC ; Valencia U.) ; Sarkisyan-Grinbaum, Edward K. (CERN ; Texas U., Arlington)
The analysis of azimuthal correlations in multiparticle production can be useful to uncover the existence of new physics beyond the Standard Model, e.g., Hidden Valley, in $e^+e^-$ annihilation at high energies. In this paper, based on previous theoretical studies and using PYTHIA8 event generator, it is found that both azimuthal and rapidity long-range correlations are enhanced due to the presence of a new stage of matter on top of the QCD partonic cascade. [...]
arXiv:2110.05900; IFIC/21-42; FTUV-21-10-12.-
2022-03-01 - 8 p.
- Published in : Phys. Rev. D 105 (2022) 053001
Fulltext: PhysRevD.105.053001 - PDF; 2110.05900 - PDF;
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Cosmological analogies in the search for new physics in high-energy collisions
/ Sanchis-Lozano, Miguel-Angel (Valencia U., IFIC ; Valencia U.) ; Sarkisyan-Grinbaum, Edward K. (CERN ; Texas U., Arlington) ; Domenech-Garret, Juan-Luis (Madrid, Polytechnic U.) ; Sanchis-Gual, Nicolas (Lisbon, IST)
In this paper, analogies between multiparticle production in high-energy collisions and the time evolution of the early universe are discussed. A common explanation is put forward under the assumption of an unconventional early state: a rapidly expanding universe before recombination (last scattering surface), followed by the CMB, later evolving up to present days, versus the formation of hidden/dark states in hadronic collisions followed by a conventional QCD parton shower yielding final-state particles. [...]
arXiv:2006.06569; IFIC/20-28; FTUV-20-06-11.-
2020-08-11 - 7 p.
- Published in : Phys. Rev. D 102 (2020) 035013
Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF;
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Robust Constraint on Lorentz Violation Using Fermi-LAT Gamma-Ray Burst Data
/ Ellis, John (King's Coll. London ; CERN) ; Konoplich, Rostislav (New York U. (main) ; Manhattan Coll., Riverdale) ; Mavromatos, Nikolaos E. (King's Coll. London ; U. Valencia (main)) ; Nguyen, Linh (Manhattan Coll., Riverdale) ; Sakharov, Alexander S. (New York U. (main) ; Manhattan Coll., Riverdale ; CERN) ; Sarkisyan-Grinbaum, Edward K. (CERN ; Texas U., Arlington (main))
Models of quantum gravity suggest that the vacuum should be regarded as a medium with quantum structure that may have non-trivial effects on photon propagation, including the violation of Lorentz invariance. Fermi Large Area Telescope (LAT) observations of gamma-ray bursts (GRBs) are sensitive probes of Lorentz invariance, via studies of energy-dependent timing shifts in their rapidly-varying photon emissions. [...]
arXiv:1807.00189; KCL-PH-TH/2018-28; CERN-TH/2018-138; IFIC/17-62; CERN-TH-2018-138.-
2019-04-16 - 22 p.
- Published in : Phys. Rev. D 99 (2019) 083009
Fulltext: PDF; Fulltext from Publisher: PDF;
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Limits on Neutrino Lorentz Violation from Multimessenger Observations of TXS 0506+056
/ Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn) ; Mavromatos, Nikolaos E. (King's Coll. London) ; Sakharov, Alexander S. (Manhattan Coll., Riverdale ; CERN) ; Sarkisyan-Grinbaum, Edward K. (CERN ; Texas U., Arlington)
The observation by the IceCube Collaboration of a high-energy ($E \gtrsim 200$ TeV) neutrino from the direction of the blazar TXS 0506+056 and the coincident observations of enhanced $\gamma$-ray emissions from the same object by MAGIC and other experiments can be used to set stringent constraints on Lorentz violation in the propagation of neutrinos that is linear in the neutrino energy: $\Delta v = - E/M_1$, where $\Delta v$ is the deviation from the velocity of light, and $M_1$ is an unknown high energy scale to be constrained by experiment. Allowing for a difference in neutrino and photon propagation times of $\sim 10$ days, we find that $M_1 \gtrsim 3 \times 10^{16}$ GeV. [...]
arXiv:1807.05155; KCL-PH-TH/2018-37; CERN-TH/2018-166; KCL-PH-TH-2018-37; CERN-TH-2018-166.-
2019-02-10 - 4 p.
- Published in : Phys. Lett. B 789 (2019) 352-355
Article from SCOAP3: PDF; Fulltext: PDF; Preprint: PDF;
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