CMS Publications#CMSPAS: Search for H-aa-2mu2tau (boosted) (CMS-PAS-SUS-23-005) https://cds.cern.ch/record/2957185 #SuperSymmetry
#CMSpaper: Search for Z' bosons decaying into charginos in final states with two oppositely charged leptons and missing transverse momentum in pp collisions at √s = 13 TeV (arXiv:2603.11035) https://arxiv.org/abs/2603.11035 #SuperSymmetry
#CMSpaper soon on arXiv: Search for Z' bosons decaying into charginos in final states with two oppositely charged leptons and missing transverse momentum in pp collisions at √s = 13 TeV (CERN-EP-2025-244) https://cds.cern.ch/record/2956589 #SuperSymmetry
Search for Z' bosons decaying into charginos in final states with two oppositely charged leptons and missing transverse momentum in pp collisions at $\sqrt{s}$ = 13 TeV
Massive leptophobic Z' bosons decaying to a pair of charginos are searched for in proton-proton collisions at $\sqrt{s}$ = 13 TeV, using data samples collected by the CMS experiment in 2016, 2017, and 2018, corresponding to a total integrated luminosity of 138 fb$^{-1}$. The Z' bosons originate from an additional U(1)' gauge symmetry extended to the minimal supersymmetric standard model. The final state consists of two oppositely charged leptons and missing transverse momentum. The signal extraction is performed with a parametrized neural network. The measurements are found to be consistent with the standard model expectations. Upper limits are set on the Z' boson production cross sections as a function of the Z' and chargino masses. The analysis excludes Z' boson masses up to about 3.5 TeV for the specific case of Z' bosons decaying exclusively to charginos, with the charginos decaying to W bosons and neutralinos.
Mikko TuomiIt’s true that there are a lot of different theoretical proposals that serve as alternatives or extensions to mainstream #physics: string #theory, #supersymmetry, Gauss-Bonnet #gravity, GUTs, and much more.
Many point to the success of our standard picture of reality, based on #Einstein’s general relativity and the #quantum field theory of the Standard Model, and (prematurely) dismiss all such alternative explorations.
However, a tremendous amount of progress has been made simply by constraining and ruling out many such alternatives and extensions through data-driven experiments and observations.
That progress is underappreciated, representing a huge achievement whenever it occurs.
#cosmology #universe
https://bigthink.com/starts-with-a-bang/most-underappreciated-achievement-theoretical-physics/
#CMSpaper: Search for dark matter produced in association with a Higgs boson decaying to bottom quarks in proton-proton collisions at √s = 13 TeV (arXiv:2601.11330) https://arxiv.org/abs/2601.11330 #SuperSymmetry
Search for dark matter produced in association with a Higgs boson decaying to bottom quarks in proton-proton collisions at $\sqrt{s}$ = 13 TeV
A search for dark matter particles produced in association with a Higgs boson decaying to a bottom quark-antiquark pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV is presented. The data, collected with the CMS detector at the LHC, correspond to an integrated luminosity of 101 fb$^{-1}$. The analysis is performed in exclusive categories targeting both Lorentz-boosted (merged) and resolved b jet pair topologies, covering a wide range of Higgs boson transverse momentum. A statistical combination is made with a previous search using data collected in 2016 and corresponding to an integrated luminosity of 35.9 fb$^{-1}$. The observed data agree with the standard model background predictions. Constraints are placed on models predicting new particles or interactions, such as those in the simplified frameworks of baryonic-Z' and 2HDM+a, where the latter is a type-II two-Higgs-doublet model featuring a heavy pseudoscalar with an additional light pseudoscalar. Upper limits at 95% confidence level are set on the production cross section for these models. For the baryonic-Z' model, Z' boson masses below 2.25 TeV are excluded for a dark matter particle candidate mass of 1 GeV. In the 2HDM+a model, heavy pseudoscalar masses between 850 and 1300 GeV are excluded for a light pseudoscalar mass of 350 GeV.
#CMSpaper soon on arXiv: Search for dark matter produced in association with a Higgs boson decaying to bottom quarks in proton-proton collisions at √s = 13 TeV (CERN-EP-2025-288) https://cds.cern.ch/record/2952598 #SuperSymmetry
Search for dark matter produced in association with a Higgs boson decaying to bottom quarks in proton-proton collisions at $ \sqrt{s} = $ 13 TeV
A search for dark matter particles produced in association with a Higgs boson decaying to a bottom quark-antiquark pair in proton-proton collisions at $ \sqrt{s}= $ 13 TeV is presented. The data, collected with the CMS detector at the LHC, correspond to an integrated luminosity of 101 fb$ ^{-1} $. The analysis is performed in exclusive categories targeting both Lorentz-boosted (merged) and resolved b jet pair topologies, covering a wide range of Higgs boson transverse momentum. A statistical combination is made with a previous search using data collected in 2016 and corresponding to an integrated luminosity of 35.9 fb$ ^{-1} $. The observed data agree with the standard model background predictions. Constraints are placed on models predicting new particles or interactions, such as those in the simplified frameworks of baryonic-$ \mathrm{Z}^{'} $ and 2HDM+$ \mathrm{a} $, where the latter is a type-II two-Higgs-doublet model featuring a heavy pseudoscalar with an additional light pseudoscalar. Upper limits at 95\% confidence level are set on the production cross section for these models. For the baryonic-$ \mathrm{Z}^{'} $ model, $ \mathrm{Z}^{'} $ boson masses below 2.25 TeV are excluded for a dark matter particle candidate mass of 1 GeV. In the 2HDM+$ \mathrm{a} $ model, heavy pseudoscalar masses between 850 and 1300 GeV are excluded for a light pseudoscalar mass of 350 GeV.
#CMSpaper: Search for new physics in the final state with a single photon and large missing transverse momentum in proton-proton collisions at √s = 13 TeV (arXiv:2511.17310) https://arxiv.org/abs/2511.17310 #SuperSymmetry
Search for new physics in the final state with a single photon and large missing transverse momentum in proton-proton collisions at $\sqrt{s}$ = 13 TeV
A search for new physics in events featuring a single photon and missing transverse momentum is presented, using proton-proton $\sqrt{s}$ = 13 TeV collision data corresponding to an integrated luminosity of 101 fb$^{-1}$ collected by the CMS experiment at the CERN LHC between 2017 and 2018. This analysis, combined with a previous study of 36 fb$^{-1}$ of 2016 data (totaling 137 fb$^{-1}$), reveals no significant deviations from standard model expectations. The results are then used to establish 95% confidence level limits on parameters in theoretical models involving dark matter and large extra dimensions. Compared to the 2016-only analysis, this search achieves up to a 14% improvement in exclusion reach for mediator masses in simplified dark matter models, along with 11% and 1% enhancements in the limits on the effective field theory suppression scale and the fundamental Planck scale, respectively. These results are the most stringent constraints on these parameters to date.
HistoPol (#HP) 🏴 🇺🇸 🏴#Physics #TheoreticalPhysics
*#Supersymmetry*
Wow, if you you are not a physicist, but would still like to learn more about the advances of our understanding about the universe, I recommend the visually supported video by #AlessandroRoussel, theoretical physicist and applied mathematician.
You will learn about bosons, string theory, and the like in an entertaining way.
Entropy and the Arrow of Time
#CMSpaper: Search for dark matter production in association with bottom quarks and a lepton pair in proton-proton collisions at √s = 13 TeV (arXiv:2510.12396) https://arxiv.org/abs/2510.12396 #SuperSymmetry
#CMSpaper soon on arXiv: Search for dark matter production in association with bottom quarks and a lepton pair in proton-proton collisions at √s = 13 TeV (CERN-EP-2025-119) https://cds.cern.ch/record/2945854 #SuperSymmetry
Search for dark matter production in association with bottom quarks and a lepton pair in proton-proton collisions at $ \sqrt{s}= $ 13 TeV
A search is performed for dark matter produced in association with bottom quarks and a pair of electrons or muons in data collected with the CMS detector at the LHC, corresponding to 138 fb$ ^{-1} $ of integrated luminosity of proton-proton collisions at a center-of-mass energy of 13 TeV. For the first time at the LHC, the associated production of a bottom quark-antiquark pair and a new heavy neutral Higgs boson (H) that subsequently decays into a leptonically decaying Z boson and a pseudoscalar (a) is explored. The latter acts as a dark matter mediator in the context of the two Higgs doublet model plus a pseudoscalar (2HDM+a). Multivariate techniques that target a wide range of mass configurations for the H and a particles are used. The observations are consistent with the expectations from standard model processes. Upper limits at 95% confidence level are set on the product of cross section and branching fraction of the new particles, ranging from 10$^{-2} $ pb for an H mass of 400 GeV to 10$^{-3} $ pb for an H mass of 2000 GeV. Constraints on the parameter space of a benchmark 2HDM+a model are derived and compared with expectations in the context of cosmological predictions.