2024-07-26 12:03 |
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2024-07-25 22:21 |
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2024-07-24 14:41 |
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2024-07-24 12:00 |
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2024-07-23 15:26 |
Measurement of double differential and total charm cross sections at 7 TeV
/CMS Collaboration
The production cross section of D$^{*\pm}$ mesons in proton-proton collisions is measured at a center-of-mass energy of $7\,{\rm TeV}$ with the CMS detector.
Special low-$p_T$ tracking and low-pileup data are used, corresponding to an integrated luminosity of $3.0\,{\rm nb}^{-1}$.
A double-differential cross-section measurement is performed covering D$^{*\pm}$ transverse momentum $p_{\rm T}$ down to $1\,{\rm GeV}$ and a rapidity range of $|y|<2.5$.
The total charm-quark pair cross section, $\sigma_{{\rm c\bar c},{\rm tot}}(7\,{\rm TeV}) = 9.39^{+1.35}_{-1.49}\,{\rm mb}$ is extracted from the D$^{*\pm}$-meson cross section. For this purpose, the results are combined with published measurements by the LHCb Collaboration covering rapidities larger than 2.5, and then extrapolated to the full kinematical phase space by means of a new data-driven procedure that includes a complete treatment of charm-fragmentation nonuniversality.
This combination probes the largest phase space for charm production ever explored at LHC, resulting in the smallest extrapolation factor, which minimizes the impact of theoretical uncertainties.
The resulting cross sections are compared to NLO+NLL and NNLO-QCD predictions and to the results from other experiments..
CMS-PAS-BPH-22-007.-
Geneva : CERN, 2024
Figure_001: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_004-c: PDF; Figure_004-d: PDF; Figure_004-e: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_005-c: PDF; Figure_005-d: PDF; Figure_005-e: PDF; Figure_005-f: PDF; Figure_005-g: PDF; Figure_005-h: PDF; Figure_005-i: PDF; Figure_005-j: PDF; Figure_005-k: PDF; Figure_006: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)
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2024-07-22 23:40 |
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2024-07-22 14:52 |
Search for nonresonant new physics in high-mass dilepton events in association with b-tagged jets
/CMS Collaboration
A search for nonresonant new physics phenomena in high-mass dilepton events produced in association with b-tagged jets is performed using the data collected by the CMS experiment at the CERN LHC at a center-of-mass energy of $13~\mathrm{TeV}$. The analysis considers two EFT-based models with 6-dimensional operators involving four fermion contact interactions between two leptons (electrons and muons) and $\mathrm{b}$ or $\mathrm{s}$ quarks ($\mathrm{bb\ell\ell}$ and $\mathrm{bs\ell\ell}$). [...]
CMS-PAS-EXO-23-010.-
Geneva : CERN, 2024
Figure_001: PNG; Figure_002-a: PNG; Figure_002-b: PNG; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_007-a: PDF; Figure_007-b: PDF; Figure_007-c: PDF; Figure_007-d: PDF; Figure_008-a: PDF; Figure_008-b: PDF; Figure_008-c: PDF; Figure_008-d: PDF; Figure_009-a: PDF; Figure_009-b: PDF; Figure_010-a: PDF; Figure_010-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)
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2024-07-22 14:52 |
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2024-07-22 13:32 |
Combination and interpretation of fiducial differential Higgs boson production cross sections at $\sqrt{s}=13~\mathrm{TeV}$
/CMS Collaboration
The Higgs boson fiducial differential production cross sections are sensitive probes for the presence of physics beyond the standard model. New physics may contribute to the gluon-gluon fusion loop, the dominant Higgs boson production mechanism at the LHC, and manifest itself as deviations from the expected standard model distributions. [...]
CMS-PAS-HIG-23-013.-
Geneva : CERN, 2024
Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_001-d: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Figure_006-a: PDF; Figure_006-b: PDF; Figure_006-c: PDF; Figure_006-d: PDF; Figure_006-e: PDF; Figure_006-f: PDF; Figure_006-g: PDF; Figure_006-h: PDF; Figure_006-i: PDF; Figure_006-j: PDF; Figure_006-k: PDF; Figure_007: PDF; Figure_008: PDF; Figure_009: PDF; Figure_010: PDF; Figure_011-a: PDF; Figure_011-b: PDF; Figure_011-c: PDF; Figure_011-d: PDF; Figure_012-a: PDF; Figure_012-b: PDF; Figure_012-c: PDF; Figure_013-a: PDF; Figure_013-b: PDF; Figure_013-c: PDF; Figure_013-d: PDF; Figure_014-a: PDF; Figure_014-b: PDF; Figure_014-c: PDF; Figure_015-a: PDF; Figure_015-b: PDF; Figure_015-c: PDF; Figure_015-d: PDF; Figure_016-a: PDF; Figure_016-b: PDF; Figure_016-c: PDF; Figure_016-d: PDF; Figure_016-e: PDF; Figure_016-f: PDF; Figure_016-g: PDF; Figure_016-h: PDF; Figure_016-i: PDF; Figure_016-j: PDF; Figure_016-k: PDF; Figure_016-l: PDF; Figure_016-m: PDF; Figure_016-n: PDF; Figure_016-o: PDF; Figure_016-p: PDF; Figure_017-a: PDF; Figure_017-b: PDF; Figure_017-c: PDF; Figure_017-d: PDF; Figure_017-e: PDF; Figure_017-f: PDF; Figure_017-g: PDF; Figure_017-h: PDF; Figure_017-i: PDF; Figure_017-j: PDF; Figure_017-k: PDF; Figure_017-l: PDF; Figure_017-m: PDF; Figure_017-n: PDF; Figure_017-o: PDF; Figure_018: PDF; Figure_019-a: PDF; Figure_019-b: PDF; Figure_019-c: PDF; Figure_019-d: PDF; Figure_020-a: PDF; Figure_020-b: PDF; Figure_020-c: PDF; Figure_020-d: PDF; Figure_021-a: PDF; Figure_021-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)
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2024-07-21 20:20 |
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