Preprints

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2024-05-24
14:32
arXiv [PUBDB-2024-01877] Preprint
; ; ; et al
Search for $CP$ violation in D$^0$$\to$ K$^0_\mathrm{S}$K$^0_\mathrm{S}$ decays in proton-proton collisions at $\sqrt{s}$ = 13 TeV
[CERN-EP-2024-120; CMS-BPH-23-005; arXiv:2405.11606]
 GO
A search is reported for charge-parity D$^0$$\to$ K$^0_\mathrm{S}$K$^0_\mathrm{S}$$CP$ violation in D$^0$$\to$ K$^0_\mathrm{S}$K$^0_\mathrm{S}$ decays, using data collected in proton-proton collisions at $\sqrt{s}$ = 13 TeV recorded by the CMS experiment in 2018. The analysis uses a dedicated data set that corresponds to an integrated luminosity of 41.6 fb$^{-1}$, which consists of about 10 billion events containing a pair of ẖadrons, nearly all of which decay to charm hadrons. [...]
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2024-05-24
14:30
arXiv [PUBDB-2024-01876] Preprint
; ; ; et al
Dark sector searches with the CMS experiment
[CERN-EP-2024-106; CMS-EXO-23-005; arXiv:2405.13778]
 GO
Astrophysical observations provide compelling evidence for gravitationally interacting dark matter in the universe that cannot be explained by the standard model of particle physics. The extraordinary amount of data from the CERN LHC presents a unique opportunity to shed light on the nature of dark matter at unprecedented collision energies. [...]
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2024-05-24
14:27
arXiv [PUBDB-2024-01875] Preprint
; ; ; et al
Overview of high-density QCD studies with the CMS experiment at the LHC
[CERN-EP-2024-057; CMS-HIN-23-011; arXiv:2405.10785]
 GO
The heavy ion (HI) physics program has proven to be an essential part of the overall physics program at the Large Hadron Collider at CERN. Its main purpose has been to provide a detailed characterization of the quark-gluon plasma (QGP), a deconfined state of quarks and gluons created in high-energy nucleus-nucleus collisions. [...]
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2024-05-24
14:25
arXiv [PUBDB-2024-01874] Preprint
; ; ; et al
Search for new physics in high-mass diphoton events from proton-proton collisions at $\sqrt{s}$ = 13 TeV
[CERN-EP-2024-109; CMS-EXO-22-024; arXiv:2405.09320]
 GO
Results are presented from a search for new physics in high-mass diphoton events from proton-proton collisions at $\sqrt{s}$ = 13 TeV. The data set was collected in 2016-2018 with the CMS detector at the LHC and corresponds to an integrated luminosity of 138 fb$^{-1}$. [...]
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2024-05-24
14:24
arXiv [PUBDB-2024-01873] Preprint
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Search for production of a single vector-like quark decaying to tH or tZ in the all-hadronic final state in pp collisions at $\sqrt{s}$ = 13 TeV
[CERN-EP-2024-067; CMS-B2G-19-001; arXiv:2405.05071]
 GO
A search for electroweak production of a single vector-like T quark in association with a bottom (b) quark in the all-hadronic decay channel is presented. This search uses proton-proton collision data at $\sqrt{s}$ = 13 TeV collected by the CMS experiment at the CERN LHC during 2016-2018, corresponding to an integrated luminosity of 138 fb$^{-1}$ The T quark is assumed to have charge 2/3 and decay to a top (t) quark and a Higgs (H) or Z boson. [...]
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2024-05-24
14:22
arXiv [PUBDB-2024-01872] Preprint
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Girth and groomed radius of jets recoiling against isolated photons in lead-lead and proton-proton collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV
[CERN-EP-2024-073; CMS-HIN-23-001; arXiv:2405.02737]
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This Letter presents the first measurements of the groomed jet radius $R_\mathrm{g}$ and the jet girth $g$ in events with an isolated photon recoiling against a jet in lead-lead (PbPb) and proton-proton (pp) collisions at the LHC at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The observables $R_\mathrm{g}$ and $g$ provide a quantitative measure of how narrow or broad a jet is. [...]
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2024-05-24
14:21
arXiv [PUBDB-2024-01871] Preprint
; ; ; et al
Search for new resonances decaying to pairs of merged diphotons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
[CERN-EP-2024-101; CMS-EXO-22-022; arXiv:2405.00834]
 GO
A search is presented for an extended Higgs sector with two new particles, X and $\phi$, in the process X $\to$$\phi\phi$$\to$$(\gamma\gamma)(\gamma\gamma)$. Novel neural networks classify events with diphotons that are merged and determine the diphoton masses. [...]
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2024-05-24
14:19
arXiv [PUBDB-2024-01870] Preprint
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Search for the Z boson decay to $\tau\tau\mu\mu$ in proton-proton collisions at $\sqrt{s}$ = 13 TeV
[CERN-EP-2024-107; CMS-SMP-22-016; arXiv:2404.18298]
 GO
The first search for the Z boson decay to $\tau\tau\mu\mu$ at the CERN LHC is presented, based on data collected by the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 138 fb$^{-1}$. The data are compatible with the predicted background. [...]
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2024-05-24
14:17
arXiv [PUBDB-2024-01869] Preprint
; ; ; et al
Performance of CMS muon reconstruction from proton-proton to heavy ion collisions
[CERN-EP-2024-040; CMS-MUO-21-001; arXiv:2404.17377]
 GO
The performance of muon tracking, identification, triggering, momentum resolution, and momentum scale has been studied with the CMS detector at the LHC using data collected at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV in proton-proton (pp) and lead-lead (PbPb) collisions in 2017 and 2018, respectively, and at $\sqrt{s_\mathrm{NN}}$ = 8.16 TeV in proton-lead (pPb) collisions in 2016. Muon efficiencies, momentum resolutions, and momentum scales are compared by focusing on how the muon reconstruction performance varies from relatively small occupancy pp collisions to the larger occupancies of pPb collisions and, finally, to the highest track multiplicity PbPb collisions. [...]
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2024-05-24
14:15
arXiv [PUBDB-2024-01868] Preprint
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Measurement of multijet azimuthal correlations and determination of the strong coupling in proton-proton collisions at $\sqrt{s}$ = 13 TeV
[CERN-EP-2024-066; CMS-SMP-22-005; arXiv:2404.16082]
 GO
A measurement is presented of a ratio observable that provides a measure of the azimuthal correlations among jets with large transverse momentum $p_\mathrm{T}$. This observable is measured in multijet events over the range of $p_\mathrm{T}$ = 360-3170 GeV based on data collected by the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 134 fb$^{-1}$. [...]
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