A new combined LHC top quark mass measurement, the excludes the latest highest energy LHC runs, however, is available. The two sigma range for the top quark pole mass in this combination is 171.86-173.18 GeV with a best fit value of 172.52 GeV. This result is essentially the same as the Particle Data Group value, but cuts the uncertainty in half.
A combination of fifteen top quark mass measurements performed by the ATLAS and CMS experiments at the LHC is presented. The data sets used correspond to an integrated luminosity of up to 5 and 20^−1 of proton-proton collisions at center-of-mass energies of 7 and 8 TeV, respectively. The combination includes measurements in top quark pair events that exploit both the semileptonic and hadronic decays of the top quark, and a measurement using events enriched in single top quark production via the electroweak t-channel. The combination accounts for the correlations between measurements and achieves an improvement in the total uncertainty of 31% relative to the most precise input measurement. The result is m(t) = 172.52 ± 0.14 (stat) ± 0.30 (syst) GeV, with a total uncertainty of 0.33 GeV.
CMS and ATLAS Collaborations, "Combination of measurements of the top quark mass from data collected by the ATLAS and CMS experiments at s√=7 and 8 TeV" arXiv:2402.08713 (February 13, 2024).
3 comments:
arXiv:2309.14270 (gr-qc)
[Submitted on 25 Sep 2023 (v1), last revised 16 Feb 2024 (this version, v3)]
MOND via Matrix Gravity
Ivan G. Avramidi, Roberto Niardi
MOND theory has arisen as a promising alternative to dark matter in explaining the collection of discrepancies that constitute the so-called missing mass problem. The MOND paradigm is briefly reviewed. It is shown that MOND theory can be incorporated in the framework of the recently proposed Matrix Gravity. In particular, we demonstrate that Matrix Gravity contains MOND as a particular case, which adds to the validity of Matrix Gravity and proves it is deserving of further inquiry.
Comments: 31 pages, minor corrections
Subjects: General Relativity and Quantum Cosmology (gr-qc); Astrophysics of Galaxies (astro-ph.GA)
Cite as: arXiv:2309.14270 [gr-qc]
Sort of interesting. Might take a look.
Maarten Havinga
February 19, 2024 at 2:33 am
Looks very much like Milgrom’s BIMOND to me, but then taking the constraints (from lensing, LIGO etc.) less into account.
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