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We present a novel simulation of a strongly interacting dark sector also known as the Hidden Valley scenarios using angular ordered showers and the cluster hadronisation model in Herwig 7. We discuss the basics of this implementation and…

High Energy Physics - Phenomenology · Physics 2024-11-27 Suchita Kulkarni , M. R. Masouminia , Simon Plätzer , Dominic Stafford

Cosmogenic muon-induced radioactive isotopes pose a significant background source for deep-underground low-background experiments. Although rock overburdens at underground sites substantially attenuate the cosmogenic muon flux, residual…

High Energy Physics - Experiment · Physics 2026-03-11 Junwei Zhang , Yongpeng Zhang , Yongbo Huang , Jilei Xu , Junyou Chen , Yi Wang

Ultrahigh-energy cosmic rays are often characterized indirectly by analyzing the properties of secondary cosmic ray particles produced in the collisions with air nuclei. The particle number $N_\mu$ of muon and the depth of shower maximum…

High Energy Astrophysical Phenomena · Physics 2024-08-27 Bingyang Liu , Zhixiang Yang , Jianhong Ruan

In this work we explore multiple search strategies for higgsinos and mixed higgsino-wino states in the MSSM and project the results onto the $(\mu,M_2)$ plane. Assuming associated production of higgsino-like pairs with a $W/Z$ boson, we…

High Energy Physics - Phenomenology · Physics 2024-01-12 Linda M. Carpenter , Humberto Gilmer , Junichiro Kawamura , Taylor Murphy

Climate downscaling is a crucial technique within climate research, serving to project low-resolution (LR) climate data to higher resolutions (HR). Previous research has demonstrated the effectiveness of deep learning for downscaling tasks.…

Machine Learning · Computer Science 2023-12-13 Naufal Shidqi , Chaeyoon Jeong , Sungwon Park , Elke Zeller , Arjun Babu Nellikkattil , Karandeep Singh

We propose a systematic programme to search for long-lived neutral particle signatures through a minimal set of displaced searches requiring significant missing transverse energy (dMETs). Our approach is to extend the well-established dark…

High Energy Physics - Phenomenology · Physics 2017-10-25 Oliver Buchmueller , Albert De Roeck , Matthew McCullough , Kristian Hahn , Kevin Sung , Pedro Schwaller , Tien-Tien Yu

The fraction of heavy vector mesons produced in a heavy ion collision, as compared to a proton proton collision, serves as an important indication of the formation of a thermal medium, the quark gluon plasma. This sort of analysis strongly…

High Energy Physics - Phenomenology · Physics 2016-11-23 Nelson R. F. Braga , M. A. Martin Contreras , Saulo Diles

The problem of the estimation of distribution parameters in the case of experimentally limited information is discussed. As an example the determination of the total number of muons in Extensive Air Showers registered in the KASCADE…

High Energy Physics - Phenomenology · Physics 2007-05-23 Tadeusz Wibig

A search is performed for heavy resonances decaying to two long-lived massive neutral particles, each decaying to leptons. The experimental signature is a distinctive topology consisting of a pair of oppositely charged leptons originating…

High Energy Physics - Experiment · Physics 2013-03-14 CMS Collaboration

The High-Altitude Water Cherenkov experiment (HAWC) observatory is located 4100 meters above sea level. HAWC is able to detect secondary particles from extensive air showers (EAS) initiated in the interaction of a primary particle (either a…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 E. Bourbeau , T. Capistrán , I. Torres , E. Moreno

Surface detector arrays are designed to measure the spectrum and composition of high-energy cosmic rays by detecting the secondary particle flux of the Extensive Air Showers (EAS) induced by the primary cosmic rays. Electromagnetic…

Astrophysics · Physics 2008-11-26 Fabian Schmidt , Maximo Ave , Lorenzo Cazon , Aaron Chou

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…

In this paper we analyze the energy evolution of the muon content of air showers between $10^{18.4}$ and $10^{19.6}$ eV to be able to determine the most likely mass composition scenario from future number of muons measurements. The energy…

High Energy Astrophysical Phenomena · Physics 2016-08-15 Raul Ribeiro Prado , Ruben Conceição , Mário Pimenta , Vitor de Souza

In this thesis, we explore the phenomenology of scalar particles within Beyond Standard Model frameworks, using Machine Learning (ML) techniques to enhance sensitivity and discovery potential at current and future collider experiments, the…

High Energy Physics - Phenomenology · Physics 2025-07-22 E. A. Herrera-Chacón

We investigate the observed muon deficit in air shower simulations when compared to ultrahigh-energy cosmic ray (UHECR) data. Gleaned from the observed enhancement of strangeness production in ALICE data, the associated $\pi \leftrightarrow…

High Energy Physics - Phenomenology · Physics 2023-07-18 Sergio J. Sciutto , Luis A. Anchordoqui , Carlos Garcia Canal , Felix Kling , Jorge F. Soriano

The $B$-factories and Large Hadron Collider experiments have demonstrated the ability to observe and measure the properties of bottomonium mesons. In order to discover missing states it is useful to know their properties to develop a…

High Energy Physics - Phenomenology · Physics 2015-10-07 Stephen Godfrey , Kenneth Moats

Hadron-hadron interaction and Deep Inelastic Scattering (DIS) at very high energies is dominated by events at small-$x_B$ regime. Interesting and complex physical content of this regime is described by a phenomenological model called…

High Energy Physics - Phenomenology · Physics 2011-01-25 Houri Ziaeepour

In this paper we present an analysis strategy and a dedicated tool to determine the exclusion confidence level for any scenario involving multiple heavy extra quarks with generic decay channels, as predicted in several extensions of the…

High Energy Physics - Phenomenology · Physics 2015-06-19 D. Barducci , A. Belyaev , M. Buchkremer , G. Cacciapaglia , A. Deandrea , S. De Curtis , J. Marrouche , S. Moretti , L. Panizzi

The recent observations of muon charge ratio up to about 10 TeV and of atmospheric neutrinos up to energies of about 400 TeV has triggered a renewed interest into the high-energy interaction models and cosmic ray primary composition. A…

High Energy Astrophysical Phenomena · Physics 2013-04-23 Anatoli Fedynitch , Julia Becker Tjus , Paolo Desiati

Studying the pathlength dependence of high P_T hadron suppression in heavy-ion collisions by measuring the dependence of hard hadron production on the angle phi with the reaction plane in non-central collisions has so far been one of the…

High Energy Physics - Phenomenology · Physics 2015-03-17 Thorsten Renk
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