Evidence for dominant vector-meson production in inelastic proton-proton collisions at 53 GeV c.m. energy

Jancsó, Gábor; Albrow, M.; Almehed, S.; Booth, P.S.L.; Bouard, X. De; Burger, J. D.; Bøggild, H.; Carroll, L.; Catz, P.; Dahl‐Jensen, E.; Dahl-Jensen, I.; Damgaard, G.; Dardel, G. Von; Elverhaug, N.; Guillerminet, B.; Hansen, Klavs; Herbsleb, P.; Jackson, J. N.; Jarlskog, G.; Jensen, H.; Jönsson, L.; Klovning, A.; Lillethun, E.; Little, R.; Lohse, E.; Lu, A.; Lörstad, B.; McCubbin, N. A.; Melin, Anders; Miettinen, H.; Morris, J. V.; Möller, R.; Nielsen, Simon; Nielsen, B. S.; Petersen, J.; Sanford, T. W. L.; Skard, J. A.; Smith, D.B.; Villeneuve, Pierre V.

doi:10.1016/0550-3213(77)90271-1

Cited by 54 publications

(6 citation statements)

References 18 publications

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“…This has previously been shown in Ref. [44], where only taking into account ρ 0 and ω mesons resulted in an inadequate fit, with a spurious peak at 0.6 GeV/c 2 in the π + π − invariant mass spectra, due to decays of K * 0 mesons, where the kaon is assigned the mass of a pion. As there is no particle identification used in this analysis, the effect due to K * 0 meson production is expected to be strong and it must be included in the fitting procedure.…”

Section: Event and Track Selectionmentioning

confidence: 85%

Measurement of meson resonance production in $$\pi ^-+$$ π - + C interactions at SPS energies

et al. 2017

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We present measurements of ρ 0 , ω and K * 0 spectra in π − + C production interactions at 158 GeV/c and ρ 0 spectra at 350 GeV/c using the NA61/SHINE spectrometer at the CERN SPS. Spectra are presented as a function of the Feynman's variable x F in the range 0 < x F < 1 and 0 < x F < 0.5 for 158 and 350 GeV/c respectively. Furthermore, we show comparisons with previous measurements and predictions of several hadronic interaction models. These measurements are essential for a better understanding of hadronic shower development and for improving the modeling of cosmic ray air showers.

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Section: Event and Track Selectionmentioning

confidence: 85%

Measurement of meson resonance production in $$\pi ^-+$$ π - + C interactions at SPS energies

et al. 2017

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“…Near threshold this is the only available channel, such that this cross section can be taken as a reasonable estimate of the total inclusive cross section. Further away from threshold bona fide measurements of the inclusive cross section are scarcer but we have identified four measurements in the literature at √ s =3.17, 27.45, 38.8, and 53 GeV [103][104][105][106][107]. We split the available data into two subsets, near-threshold exclusive production (defined as pp → ppη measurements for √ s ≤ 3 GeV) and far-fromthreshold inclusive data (defined as pp → ηX for √ s > 3 GeV).…”

Section: η Mesonsmentioning

confidence: 99%

“…The data is taken from Refs. [103][104][105][106][107][108] and fitted using the piece-wise procedure described in the text; the smooth curve is Eq. (B1).…”

Section: Appendix B: Atmospheric Meson Production Ratementioning

confidence: 99%

New Constraints on Millicharged Particles from Cosmic-ray Production

Plestid,

Takhistov,

Tsai

et al. 2020

Preprint

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We study the production of exotic millicharged particles (MCPs) from cosmic ray-atmosphere collisions, which constitutes a permanent MCP production source for all terrestrial experiments. Our calculation of the MCP flux can be used to reinterpret existing limits from experiments such as MACRO and Majorana on an ambient flux of ionizing particles. Large-scale underground neutrino detectors are particularly favorable targets for the resulting MCPs. Using available data from the Super-K experiment, we set new limits on MCPs, which are the best in sensitivity reach for the mass range 0.1 mχ 0.5 GeV, and which are competitive with accelerator-based searches for masses up to 1.5 GeV. Applying these constraints to models where a sub-dominant component of dark matter (DM) is fractionally charged allows us to probe parts of the parameter space that are challenging for conventional direct-detection DM experiments, independently of any assumptions about the DM abundance. These results can be further improved with the next generation of large-scale neutrino detectors.

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“…The same-charge pairs (e + e + and e − e − ) provide a natural normalization of the uncorrelated background. This combinatorial method has successfully been used in the past for measurements involving opposite-sign pairs of pions or muons [14,15].…”

Section: The Clas Experiments G7mentioning

confidence: 99%

In-medium properties of light vector mesons

Djalali

Nasseripour

Weygand

et al. 2007

J. Phys. G: Nucl. Part. Phys.

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The photoproduction of vector mesons on various nuclei has been studied using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Laboratory. All three vector mesons ρ ω and φ are observed via their decay to e + e − . The possible in-medium effects on the properties of the ρ meson are of particular interest. The ρ spectral function is extracted from the data on carbon, iron and titanium, and compared to the spectrum from liquid deuterium, which is relatively free of nuclear effects. We observe no effects on the mass of the ρ meson, some widening in titanium and iron is observed consistent with the collisional broadening.

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Evidence for dominant vector-meson production in inelastic proton-proton collisions at 53 GeV c.m. energy

Cited by 54 publications

References 18 publications

Measurement of meson resonance production in $$\pi ^-+$$ π - + C interactions at SPS energies

Measurement of meson resonance production in $$\pi ^-+$$ π - + C interactions at SPS energies

New Constraints on Millicharged Particles from Cosmic-ray Production

In-medium properties of light vector mesons

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