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Upward throughgoing muons in underground detectors are induced by atmospheric $\nu_\mu$ with energies in the $1-10^4 GeV$ range. The oscillations of atmospheric muon neutrinos should affect mainly those with energy smaller than $E_\nu \sim…

高能物理 - 实验 · 物理学 2007-05-23 D. Bakari , Y. Becherini , M. Spurio

Extensive air showers (EAS) are a cascade of electromagnetic radiation and ionized particles that produced in the atmosphere through the interaction of a primary cosmic ray with the atom of nucleus in the air producing a huge amount of…

高能天体物理现象 · 物理学 2020-08-03 Hassanen Abdulhussaen Jassim , A. A. Al-Rubaiee , Iman Tarik Al-Alawy

A search for long-lived particles decaying into muon pairs is performed using proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS experiment at the LHC in 2017 and 2018, corresponding to an integrated…

高能物理 - 实验 · 物理学 2022-04-19 CMS Collaboration

Distinguishing $\gamma$-ray and hadron initiated extensive air showers (EAS) based on lateral distribution of electrons has been studied by detailed Monte Carlo (MC) simulations. The possibility of using the local age parameter (LAP) of EAS…

高能天体物理现象 · 物理学 2015-03-24 R. K. Dey , A. Bhadra

We report on a study of sub-TeV ($E_\gamma > 10$ GeV) gamma-ray-induced muon secondaries in coincidence with BATSE gamma ray bursts (GRBs). Each TeV gamma ray striking the atmosphere produces $\approx$0.2 muons whose identity and angle can…

天体物理学 · 物理学 2007-05-23 J. Poirier , C. D'Andrea , P. C. Fragile , J. Gress , G. J. Mathews , D. Race

The electric fields inside thunderstorms can significantly modify the intensity of secondary cosmic ray muons at the ground level, producing measurable variations in their intensity ($\Delta$I$_{\mu}$). By utilizing the decade-long…

We put together the experimental results on muon component of extensive air showers (EAS) which were gained with various techniques at the detector complex of the Tien Shan mountain station. According to this comparison, the problem of the…

高能天体物理现象 · 物理学 2021-08-24 A. Shepetov , S. Shaulov , O. Likiy , V. Ryabov , T. Sadykov , N. Saduev , V. Zhukov

We report the first observation of seasonal modulations in the rates of cosmic ray multiple-muon events at two underground sites, the MINOS Near Detector with an overburden of 225 mwe, and the MINOS Far Detector site at 2100 mwe. At the…

高能物理 - 实验 · 物理学 2015-06-17 P. Adamson , I. Anghel , A. Aurisano , G. Barr , M. Bishai , A. Blake , G. J. Bock , D. Bogert , S. V. Cao , C. M. Castromonte , S. Childress , J. A. B. Coelho , L. Corwin , . D. Cronin-Hennessy , J. K. de Jong , A. V. Devan , N. E. Devenish , M. V. Diwan , C. O. Escobar , J. J. Evans , E. Falk , G. J. Feldman , M. V. Frohne , H. R. Gallagher , R. A. Gomes , M. C. Goodman , P. Gouffon , N. Graf , R. Gran , K. Grzelak , A. Habig , S. R. Hahn , J. Hartnell , R. Hatcher , A. Holin , J. Huang , J. Hylen , G. M. Irwin , Z. Isvan , C. James , D. Jensen , T. Kafka , S. M. S. Kasahara , G. Koizumi , M. Kordosky , A. Kreymer , K. Lang , J. Ling , P. J. Litchfield , P. Lucas , W. A. Mann , M. L. Marshak , N. Mayer , C. McGivern , M. M. Medeiros , R. Mehdiyev , J. R. Meier , M. D. Messier , W. H. Miller , S. R. Mishra , S. Moed Sher , C. D. Moore , L. Mualem , J. Musser , D. Naples , J. K. Nelson , H. B. Newman , R. J. Nichol , J. A. Nowak , J. O. Connor , M. Orchanian , S. Osprey , R. B. Pahlka , J. Paley , R. B. Patterson , G. Pawloski , A. Perch , S. Phan-Budd , R. K. Plunkett , N. Poonthottathil , X. Qiu , A. Radovic , B. Rebel , C. Rosenfeld , H. A. Rubin , M. C. Sanchez , J. Schneps , A. Schreckenberger , P. Schreiner , R. Sharma , A. Sousa , N. Tagg , R. L. Talaga , J. Thomas , M. A. Thomson , X. Tian , A. Timmons , S. C. Tognini , R. Toner , D. Torretta , J. Urheim , P. Vahle , B. Viren , A. Weber , R. C. Webb , C. White , L. Whitehead , L. H. Whitehead , S. G. Wojcicki , R. Zwaska

In this article a new method is proposed for estimating the mass composition of cosmic rays in individual events with energies above $1.25 \times 10^{19}$ eV. It is based on a joint analysis of experimental data and simulation results…

高能天体物理现象 · 物理学 2024-09-18 A. V. Glushkov , L. T. Ksenofontov , K. G. Lebedev , A. Sabourov

The $W$ boson angular distribution in events with high transverse momentum jets is measured using data collected by the ATLAS experiment from proton-proton collisions at a centre-of-mass energy $\sqrt{s}=$ 8 TeV at the Large Hadron…

高能物理 - 实验 · 物理学 2017-01-24 ATLAS Collaboration

The evolution of the muon content of very high energy air showers (EAS) in the atmosphere is investigated with data of the KASCADE-Grande observatory. For this purpose, the muon attenuation length in the atmosphere is obtained to…

The MACRO experiment detected more than 300000 multiple muon events. We analysed these events to measure the distribution of the separation of underground TeV muons (decoherence function), up to a distance of 70 meters. On a subsample of…

高能物理 - 实验 · 物理学 2007-05-23 M. Sioli

We present charged-particle distributions sensitive to the underlying event, measured by the ATLAS detector in proton-proton collisions at a centre-of-mass energy of 13 TeV, in low-luminosity Large Hadron Collider fills corresponding to an…

高能物理 - 实验 · 物理学 2017-05-11 ATLAS Collaboration

An anomaly in time distribution of neutrinos from the ISIS pulsed beam stop source observed by the KARMEN collaboration is discussed. We show that the anomaly can be interpreted as a superposition of two exponentials, both having time…

高能物理 - 唯象学 · 物理学 2009-10-31 S. N. Gninenko , N. V. Krasnikov

A search for new long-lived particles decaying to leptons is presented using proton-proton collisions produced by the LHC at sqrt(s) = 8 TeV. Data used for the analysis were collected by the CMS detector and correspond to an integrated…

高能物理 - 实验 · 物理学 2015-03-05 CMS Collaboration

Event-by-event measured arrival time distributions of Extensive Air Shower (EAS) muons are affected and distorted by various interrelated effects which originate from the time resolution of the timing detectors, from fluctuations of the…

天体物理学 · 物理学 2009-11-07 R. Haeusler , A. F. Badea , H. Rebel , I. M. Brancus , J. Oehlschlaeger

The complete 5.4 kton MINOS far detector has been taking data since the beginning of August 2003 at a depth of 2070 meters water-equivalent in the Soudan mine, Minnesota. This paper presents the first MINOS observations of muon neutrino and…

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

Results are reported from a search for new particles that decay into a photon and two gluons, in events with jets. Novel jet substructure techniques are developed that allow photons to be identified in an environment densely populated with…

高能物理 - 实验 · 物理学 2020-01-01 CMS Collaboration

Residual flux and angular distribution of high-energy cosmic muons have been measured in two underground locations at the Canfranc Underground Laboratory (LSC) using a dedicated Muon Monitor. The instrument consists of three layers of fast…

A new approach to investigations of ultra-high energy cosmic rays based on the ground-level measurements of the spectra of local density of EAS muons at various zenith angles is considered. Basic features of the local muon density…