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2022-05-23
13:56
Performance monitoring of the GE1/1 Triple-GEM detectors for the CMS Muon System / Milella, Gabriele (DESY) ; Simone, Federica Maria (INFN, Bari ; Bari U.) /CMS Collaboration
The muon system of the CMS experiment has been instrumented with two wheels of triple-GEM detectors in order to ensure redundancy in the pseudo-rapidity region 1.55-2.18 so keeping the trigger rate at an acceptable level while not compromising the CMS physics potential in Run 3 of the LHC.The station, named GE1/1, provides two additional muon hit measurements which will improve the muon tracking and triggering performance in combination with the existing CSC detectors.As the commissioning phase of the detector is ongoing, prompt assessment of the muon detection performance is crucial for adjusting the operating parameters of the detector and its electronics. This contribution will present a set of analysis tools developed for the detector performance monitoring based on tools common to all the CMS muon subdetectors. [...]
CMS-CR-2021-138.- Geneva : CERN, 2021 - 7 p. Fulltext: PDF;
In : 9th Annual Large Hadron Collider Physics (LHCP 2021), Online, GB, 7 - 12 Jun 2021

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2022-05-23
13:54
BSM H searches and rare H decay searches at CMS and ATLAS / Cooperstein, Stephane B (UC, San Diego) /ATLAS and CMS Collaborations
Searches for rare Higgs boson decays and extensions of the Higgs sector beyond the standard model are key to probing the dynamics of electroweak symmetry breaking. With the large LHC Run-2 dataset, considerable progress has been made in probing the largely unexplored Higgs boson interactions with the lighter fermions, as well as in searching for signs of new physics in the Higgs sector with mass scales ranging from 100 MeV to several TeV. [...]
CMS-CR-2022-064.- Geneva : CERN, 2022 - 7 p. Fulltext: PDF;
In : 56th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, It, 12 - 19 Mar 2022

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2022-05-23
13:54
Highlights from searches at CMS / Benato, Lisa (Hamburg U.) /CMS Collaboration
A selection of the latest CMS results is presented. Searches for new physics are performed with \mbox{Run-2} data and target new unexplored phase spaces, exploit new techniques and aim at non-conventional signatures..
CMS-CR-2022-062.- Geneva : CERN, 2022 - 5 p. Fulltext: PDF;
In : 56th Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, It, 19 - 26 Mar 2022

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2022-05-23
13:54
Standard Model multibosons at CMS and ATLAS / Massironi, Andrea (INFN, Milan Bicocca) /ATLAS and CMS Collaborations
Multiboson measurements in ATLAS and CMS reached a high level of precision with LHC Run 1 and Run 2 data taking. In this report the most recent results of di-boson (WW, WZ, ZZ, V$\gamma$), tri-boson (WWW, WWZ, WZZ, ZZZ), and rare production mechanisms (electroweak and photon-induced) will be shown. [...]
CMS-CR-2022-061.- Geneva : CERN, 2022 - 5 p. Fulltext: PDF;
In : 56th Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, It, 19 - 26 Mar 2022

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2022-05-23
13:54
Dark matter searches at CMS and ATLAS / Perez Adan, Danyer (DESY) /ATLAS and CMS Collaborations
A glimpse into the most recent searches for Dark Matter at the LHC performed by the ATLAS and CMS collaborations is presented. The results covered in this document are all based on Run-2 proton-proton collision data recorded at $\sqrt{s}=13\text{ TeV}$ and corresponding to an integrated luminosity of just under 140 fb\textsuperscript{-1}..
CMS-CR-2022-059.- Geneva : CERN, 2022 - 7 p. Fulltext: PDF;
In : 56th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, It, 12 - 19 Mar 2022

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2022-05-23
13:54
Phase 1 Upgrade of the CMS Hadron Calorimeter / Isik, Candan (Cukurova U.) /CMS Collaboration
The Phase 1 upgrade of the CMS Hadron Calorimeter detector (HCAL) involved installing silicon photomultipliers (SiPM) to measure the scintillator light output with better signal/noise and upgrading the read-out electronics, allowing for increased longitudinal segmentation and better performance. This talk will summarize the design, testing, installation, and commissioning of the HCAL Phase 1 upgrade. [...]
CMS-CR-2022-049.- Geneva : CERN, 2022 - 5 p. Fulltext: PDF;
In : Vienna Conference on Instrumentation, Online, Online, 21 - 25 Feb 2022

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2022-05-23
10:42
Dynamically restoring conformal invariance in (integrable) $\sigma$-models / Aliaj, Rigers (Athens U.) ; Sfetsos, Konstantinos (Athens U. ; CERN) ; Siampos, Konstantinos (Athens U.)
Integrable $\lambda$-deformed $\sigma$-models are characterized by an underlying current algebra/coset model CFT deformed, at the infinitesimal level, by current/parafermion bilinears. [...]
arXiv:2205.09143 ; CERN-TH-2022-082. - 37 p.
Fulltext

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2022-05-23
10:41
Performance of a spaghetti calorimeter prototype with tungsten absorber and garnet crystal fibres / An, Liupan (CERN) ; Auffray, Etiennette (CERN) ; Betti, Federico (CERN) ; Dall'Omo, Frederik (CERN) ; Gascon, David (ICC, Barcelona U.) ; Golutvin, Andrey (Imperial Coll., London) ; Guz, Yury (Serpukhov, IHEP) ; Kholodenko, Sergey (Serpukhov, IHEP) ; Martinazzoli, Loris (CERN ; Milan Bicocca U.) ; De Cos, José Mazorra (Valencia U., IFIC) et al.
A spaghetti calorimeter (SPACAL) prototype with scintillating crystal fibres was assembled and tested with electron beams of energy from 1 to 5 GeV. [...]
arXiv:2205.02500. - 14 p.
Fulltext

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2022-05-23
10:41
Dark matter direct detection from the single phonon to the nuclear recoil regime / Campbell-Deem, Brian (UC, San Diego) ; Knapen, Simon (LBL, Berkeley ; UC, Berkeley ; CERN) ; Lin, Tongyan (UC, San Diego) ; Villarama, Ethan (UC, San Diego)
In most direct detection experiments, the free nuclear recoil description of dark matter scattering breaks down for masses $\lesssim$ 100 MeV, or when the recoil energy is comparable to a few times the typical phonon energy. [...]
arXiv:2205.02250. - 28 p.
Fulltext

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2022-05-23
10:36
Observation of single top-quark + photon production with the ATLAS detector / Alhroob, Muhammad (Oklahoma U.)
These proceedings present the first observation of single top-quark production associated with a photon using the full Run2 proton-proton dataset collected by the ATLAS experiment at the LHC..
arXiv:2205.03145. - 4 p.
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