Explanipedia

Flavoured jet algorithms: a comparative study Open

Arnd Behring, Simone Caletti, F. Giuli, R. P. Grabarczyk, A. Hinzmann , et al. · 2025

A bstract The accurate identification of heavy-flavour jets — those which originate from bottom or charm quarks — is crucial for precision studies of the Standard Model and searches for new physics. However, assigning flavour to jets prese…

Search for ultra-high energy emission from Geminga and five unidentified EGRET sources Open

S. D. Biller, P. Chumney, M. Harmon, A. Shoup, G. B. Yodh , et al. · 2024

Data from the CYGNUS extensive air shower array were searched for continuous ultra-high energy (UHE) gamma radiation from five unidentified EGRET sources and from the Geminga pulsar. No evidence for continuous emission from any of these ob…

SEARCH FOR D0 AND B0 DECAYS INTO PI0 PI0 Open

D. Antreasyan, C. Peck, H. Marsiske, M. Reidenbach, A. Engler , et al. · 2023

Identification of jets using QCD-inspired observables Open

Oleh Fedkevych, Charanjit K. Khosa, Simone Marzani, F. Šforza · 2023

We study the issue of separating hadronic jets that contain bottom quarks ($b$-jets) from jets featuring light partons only. We develop a novel approach to $b$-tagging that exploits the application of QCD-inspired jet substructure observab…

LORENTZ ANGLE STUDIES FOR THE SLD ENDCAP CERENKOV RING IMAGING DETECTOR Open

P. Coyle, F. Šforza, D. G. Coyne, M. Schneider, E. Spencer , et al. · 2022

The design of the endcap Cerenkov Ring Imaging Detectors for SLD requires a detailed understanding of how electrons drift in gases under the influence of crossed electric and magnetic fields. In this report, we present recent measurements …

Identification of b-jets using QCD-inspired observables Open

Oleh Fedkevych, Charanjit K. Khosa, Simone Marzani, F. Šforza · 2022

We study the issue of separating hadronic jets that contain bottom quarks ($b$-jets) from jets featuring light partons only. We develop a novel approach to $b$-tagging that exploits the application of QCD-inspired jet substructure observab…

HEP Software Foundation Community White Paper Working Group -- Data Organization, Management and Access (DOMA) Open

D. Berzano, R. M. Bianchi, Ian Bird, Brian Bockelman, S. Campana , et al. · 2022

Without significant changes to data organization, management, and access (DOMA), HEP experiments will find scientific output limited by how fast data can be accessed and digested by computational resources. In this white paper we discuss c…

Measurement of the B-s(0)-(B)over-bar(s)(0) oscillation frequency Open

A. Abulencia, D. Acosta, J. Adelman, A. A. Affolder, T. Akimoto , et al. · 2019

We present the first precise measurement of the B-s(0)-(B) over bar (0)(s) oscillation frequency Delta m(s). We use 1 fb(-1) of data from p (p) over bar collisions at root s=1.96 TeV collected with the CDF II detector at the Fermilab Tevat…

Erratum: Search for and decays with the full CDF Run II data set [Phys. Rev. D <b>87</b>, 072003 (2013)] Open

T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi , et al. · 2018

Observation of the Y (4140) structure in the J/ψϕ mass spectrum in B±→ J/ψϕK± decays Open

T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov , et al. · 2017

The observation of the [Formula: see text] structure in [Formula: see text] decays produced in [Formula: see text] collisions at [Formula: see text] TeV is reported with a statistical significance greater than 5 standard deviations. A fit …

Performance Studies of Large Resistive Micromegas Quadruplets in Test-Beams and High Radiation Environments Open

O. Sidiropoulou, B. Álvarez González, J. Bortfeldt, A. C. Dudder, E. M. Farina , et al. · 2017

In recent years, Micromegas detectors became more and more important for large scale tracking systems in particles physics. The first Micromegas quadruplet that has been built at CERN features an active area of 0.4 m2 per plane and is base…

Measurement of theandproduction cross section using final states with a charged lepton and heavy-flavor jets in the full CDF Run II data set Open

T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi , et al. · 2016

We present a measurement of the total WW and WZ production cross sections in $p\\bar{p}$ collision at $\\sqrt{s}$ = 1.96 TeV, in a final state consistent with leptonic W boson decay and jets originating from heavy-flavor quarks from either…

Measurement of the WW and WZ production cross section using final states with a charged lepton and heavy-flavor jets in the full CDF Run II data set Open

T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi , et al. · 2016

We present a measurement of the $WW$ and $WZ$ diboson production cross-sections in a final state consistent with leptonic $W$ boson decay and jets originating from heavy-flavor quarks from either a $W$ or a $Z$ boson decay. This analysis u…

Construction of two large-size four-plane micromegas detectors Open

M. Bianco, Hans Danielsson, J. Degrange, A. C. Dudder, Rui de Oliveira , et al. · 2016

We report on the construction and initial performance studies of two\nmicromegas detector quadruplets with an area of 0.5 m$^2$. They serve as\nprototypes for the planned upgrade project of the ATLAS muon system. Their\ndesign is based on …

Construction and test of high precision drift-tube (sMDT) chambers for the ATLAS muon spectrometer Open

F. Šforza, Sebastian Nowak, Oliver Kortner, H. Kroha, Philipp Schwegler · 2015

For the upgrade of the ATLAS muon spectrometer in March 2014 new muon tracking chambers (sMDT) with drift-tubes of 15 mm diameter, half of the value of the standard ATLAS Monitored Drift-Tubes (MDT) chambers, and 10 μm positioning accuracy…

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