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CMS Conference Reports

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2024-09-09
11:52
Higgs boson cross section and coupling measurements at CMS / Jan Lukas Spah /CMS Collaboration
This report discusses recent measurements of the couplings of the Higgs boson, as well as its inclusive and fiducial production cross sections, by the CMS experiment with data collected at the centre-of-mass energies of $13~\mathrm{TeV}$ and $13.6~\mathrm{TeV}$. The proceeding presents searches for $W^{\pm}H(b\overline{b})$ and $W^{\pm}W^{\pm}H(b\overline{b})$ production through vector-boson scattering and the measurement of $t\overline{t}H(b\overline{b})$ as well as the search for $tH(b\overline{b})$ production using $138~\mathrm{fb}^{-1}$ of data collected at $\sqrt{s} = 13~\mathrm{TeV}$. Additionally, the measurements of Higgs boson production in the four-lepton and diphoton final states with data taken in 2022 at $\sqrt{s} = 13.6~\mathrm{TeV}$, corresponding to $34.7~\mathrm{fb}^{-1}$, are discussed. The results agree with the standard model predictions..
CMS-CR-2024-172.- Geneva : CERN, 2024 - 7 p. Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024

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2024-09-09
11:52
Experimental overview of BSM searches (including resonant HH production) / Soffi, Livia (INFN, Rome) /ATLAS, CMS and LHCB Collaborations
This document summarizes recent results from ATLAS and CMS collaborations in searches for physics Beyond the Standard Model (BSM) using data from LHC Runs 2 and 3. It focuses on key BSM scenarios, including extended Higgs sectors, supersymmetry, heavy fermions, and the two-Higgs-doublet model with an additional pseudoscalar. [...]
CMS-CR-2024-169.- Geneva : CERN, 2024 - 14 p. Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024

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2024-09-09
11:52
Quality Control of LYSO Ce crystals for the CMS barrel MIP Timing Detector / Gargiulo, Ruben (INFN, Rome ; Rome U.) /CMS Collaboration
In the next years, the Large Hadron Collider will enter its High-Luminosity (HL-LHC) phase. Many CMS subsystems will be upgraded to maintain the current physics performance, despite the higher levels of pileup and radiation. [...]
CMS-CR-2024-103.- Geneva : CERN, 2024 - 3 p. Fulltext: PDF;
In : 16th Pisa Meeting on Advanced Detectors, La Biodola, Isola D'elba, Italy, 26 May - 1 Jun 2024

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2024-09-09
11:49
Precision timing calorimetry with the CMS High Granularity Calorimeter / Lobanov, Artur (Hamburg U.) /CMS Collaboration
The existing CMS endcap calorimeters will be replaced with a High Granularity Calorimeter (HGCAL) for operation at the High Luminosity (HL) LHC. Radiation hardness and excellent physics performance will be achieved by utilising silicon pad sensors and SiPM-on-scintillator tiles with high longitudinal and transverse segmentation. [...]
CMS-CR-2020-065.- Geneva : CERN, 2020 - 8 p. Fulltext: PDF;
In : 3rd Conference on Calorimetry for the High Energy Frontier, Fukuoka, Japan, 25 - 29 Nov 2019

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2024-09-02
11:33
Observations of double $J/\psi$ in $\rm pPb$ collisions and triple $J/\psi$ in $\rm pp$ collisions / Liu, Jinfeng (Tsinghua U., Beijing) ; Hu, Zhen (Tsinghua U., Beijing) /CMS Collaboration
Multi parton scattering (MPI) research has great importance in the field of high energy physics. Two recent outcomes of MPI studies conducted by the CMS collaboration at the LHC are presents. [...]
CMS-CR-2024-152.- Geneva : CERN, 2024 - 8 p. Fulltext: PDF;
In : 22nd Conference on Flavor Physics and CP Violation (FPCP 2024), Bangkok, Thailand, 27 - 31 May 2024

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2024-09-02
11:33
Recent CP violation and lifetime results from CMS / Sergeychik, Vladimir (Moscow, MIPT) /CMS Collaboration
Recent results on CP violation in charm and beauty sector, as well as lifetime measurements, by the CMS experiment at the LHC are presented. The first measurement of CP violation in charm by CMS is reported, as well as the most precise measurement of effective lifetime $\tau(B^{0}_{s} \to J/\psi K^{0}_{S})$ and the first evidence for CP violation in the $B^{0}_{s} \to J/\psi \phi (1020) \to \mu^{+} \mu^{-} K^{+} K^{-}$ decay. [...]
CMS-CR-2024-125.- Geneva : CERN, 2024 - 12 p. Fulltext: PDF;
In : 22nd Conference on Flavor Physics and CP Violation (FPCP 2024), Bangkok, Thailand, 27 - 31 May 2024

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2024-09-02
11:33
Heavy flavour spectroscopy and properties at CMS / Ivanov, Kirill (Moscow, MIPT) /CMS Collaboration
Recent CMS Experiment results on conventional spectroscopy and production of heavy flavour states in pp collisions at 13 TeV are reported, including the first observation of the $\Xi_b^- \to \psi(2S) \Xi^-$ decay. We discuss the measured properties of the ground and excited hadron states..
CMS-CR-2024-124.- Geneva : CERN, 2024 - 8 p. Fulltext: PDF;
In : 22nd Conference on Flavor Physics and CP Violation (FPCP 2024), Bangkok, Thailand, 27 - 31 May 2024

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2024-09-02
09:15
Search for rare Higgs-boson decays and production modes at CMS / Covarelli, Roberto (INFN, Turin ; Turin U.) /CMS Collaboration
With the full Run2 data set of the LHC at $\sqrt{s}=$ 13 TeV it is possible to search for subdominant production modes of the Higgs boson at a pp collider, like associate production of the Higgs boson with two b-quarks, with a single top quark, or with a photon, profiting of high-branching-ratio decay modes. Viceversa, by combining all the possible production mechanism, searches for ultra-rare decays like those to a photon and a light vector meson can probe the Yukawa couplings to the light quarks and the presence of BSM effects that can enhance these processes..
CMS-CR-2024-162.- Geneva : CERN, 2024 - 6 p. Fulltext: PDF;
In : 31st International Workshop on Deep Inelastic Scattering, Grenoble, France, 8 - 12 Apr 2024

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2024-09-02
09:15
Tag-and-Probe technique tracking efficiency results at CMS / D'Anzi, Brunella (INFN, Bari ; Bari U.) /CMS Collaboration
The determination of the detector efficiency is a critical ingredient in any physics measurement. It can be in general estimated using simulations, but simulations need to be calibrated with data. [...]
CMS-CR-2024-170.- Geneva : CERN, 2024 - 4 p. Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024

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2024-09-02
09:15
Electronics design and testing of the CMS Fast Beam Condition Monitor for HL-LHC / Shibin, Konstantin (TALLINN-TALTECH) /CMS Collaboration
The high-luminosity upgrade of the LHC (HL-LHC) brings unprecedented requirements for precision bunch-by-bunch luminosity measurement and beam-induced background monitoring in real time. A key component of the CMS Beam Radiation Instrumentation and Luminosity detector system is a stand-alone luminometer, the Fast Beam Condition Monitor (FBCM), which is able to operate independently at all times with a triggerless asynchronous readout. [...]
CMS-CR-2024-164.- Geneva : CERN, 2024 - 7 p. Fulltext: PDF;
In : 6th International Conference on Technology and Instrumentation in Particle Physics (TIPP 2023), Cape Town, Western Cape, South Africa, 4 - 8 Sep 2023

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