Search for narrow structure in proton-antiproton annihilation cross sections from 1900 to 1960 MeV

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“…• Brando et al [289] (BNL AGS). They measured several points from 308 to 591 MeV=c; the normalisation is from previous published data:…”

Section: Antinucleon-nucleon Scattering Datamentioning

confidence: 99%

Antinucleon–nucleon interaction at low energy: scattering and protonium

et al. 2002

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“…In a number of experiments [134,139,111,[140][141][142][143][144] the pp annihilation cross section into charged mesons has been measured. We cannot include these data, not even with a floated normalization, since the momentum dependence of the cross section for annihilation into neutral mesons is not known.…”

Section: The Nijmegen 1993 Antiproton-proton Database a Set-up Of The...mentioning

confidence: 99%

Antiproton-proton partial-wave analysis below 925 MeV/c

1994

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A partial-wave analysis of all antiproton-proton scattering data below 925 MeV/c antiproton laboratory momentum is presented. The method used is adapted from the Nijmegen phase-shift analyses of pp and np scattering data. The Nijmegen 1993 antiproton-proton database, consisting of 3646 antiproton-proton scattering data, is presented and discussed. The best fit to this database results in chi^2_min/Ndata = 1.043. The pseudovector coupling constant of the charged pion to nucleons is determined to be (f_c)^2 = 0.0732(11) at the pion pole, where the error is statistical.Comment: Report THEF-NYM 93.02 42 pages REVTeX, 7 separate postscript figures appended. Accepted for publication in Phys. Rev.

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“…lab is the momentum of the antinucleon in the rest frame of the nucleon and m p is the proton mass. All dimensionful parameters in[94,[96][97][98] have been expressed in units of m p such that the coefficients A, B, and C used here are dimensionless.…”

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confidence: 99%

Composite Dark Matter and a horizontal symmetry

Carvunis

Guadagnoli

Reboud

et al. 2021

J. High Energ. Phys.

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We present a model of composite Dark Matter (DM), in which a new QCD-like confining “hypercolor” sector generates naturally stable hyperbaryons as DM candidates and at the same time provides mass to new weakly coupled gauge bosons H that serve as DM mediators, coupling the hyperbaryons to the Standard Model (SM) fermions. By an appropriate choice of the H gauge symmetry as a horizontal SU(2)h SM flavor symmetry, we show how the H gauge bosons can be identified with the horizontal gauge bosons recently put forward as an explanation for discrepancies in rare B-meson decays. We find that the mass scale of the H gauge bosons suggested by the DM phenomenology intriguingly agrees with the one needed to explain the rare B-decay discrepancies.

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Search for narrow structure in proton-antiproton annihilation cross sections from 1900 to 1960 MeV

Cited by 26 publications

References 8 publications

Antinucleon–nucleon interaction at low energy: scattering and protonium

Antinucleon–nucleon interaction at low energy: scattering and protonium

Antiproton-proton partial-wave analysis below 925 MeV/c

Composite Dark Matter and a horizontal symmetry

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