Inclusive η production at low transverse momentum in 63 GeV ppcollisions at the cern intersecting storage rings

Åkesson, T. P. A.; Albrow, M.; Almehed, S.; Anassontzis, E.; Batley, Richard; Benary, O.; Bøggild, H.; Botner, O.; Breuker, H.; Burkert, Volker; Callen, B.; Carosi, R.; Carter, A. A.; Carter, J. R.; Cecil, P.; Chernyatin, V.; Choi, Y.; Cleland, W.; Dagan, S.; Dahl‐Jensen, E.; Dahl-Jensen, I.; Dam, P.; Damgaard, G.; Dolgoshein, B. A.; Eidelman, S.; Evans, Wynne; Fabjan, C.; Frankel, S.; Frati, W.; Gavrilenko, I. L.; Goerlach, U.; Goloubkov, Y.; Gordon, H. A.; Hansen, Klavs; Hedberg, V.; Jarlskog, G.; Jensen, T.; Kalinovsky, A.; Kanteserov, V.; Katsanevas, S.; Kourkoumelis, C.; Kroeger, R.; Kulka, K.; Lissauer, D.; Lörstad, B.; Mannelli, I.; Μάρκου, Α.; Mayburov, S.; McCubbin, N. A.; Mjörnmark, U.; Möller, R.; Molzon, W.; Nevsky, P.; Nielsen, B. S.; Olsen, L.; Oren, Y.; Piskounov, G.; Resvanis, L. K.; Rudge, A.; Schukraft, J.; Shmeleva, A.; Sidorov, V.; Specht, H. J.; Stumer, I.; Sullivan, M. K.; Thodberg, Hans Henrik; Thompson, JA; Thorstenson, G.; Vasil'ev, P.S.; Vella, E.; Williamson, J.; Willis, W.; Winik, M.; Woody, C.; Zajc, W. A.

doi:10.1016/0370-2693(86)91409-7

“…The η multiplicity agrees with measurements of Refs. [68,69] (albeit at different beam energies); the η multiplicity is consistent with scaling the η rate by sin 2 θ ηη as a naive estimate. The kaon multiplicities qualitatively match the results of Ref.…”

Section: Rare Meson Decayssupporting

confidence: 65%

Axion-like Particle Searches at DarkQuest

Blinov,

Kowalczyk,

Wynne

2021

Preprint

2

1

0

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Axion-like particles (ALPs) interacting with the Standard Model can be abundantly produced in proton beam fixed-target experiments. Looking for their displaced decays is therefore an effective search strategy for ALPs with a mass in the MeV to GeV range. Focusing on the benchmark models where the ALP interacts dominantly with photons or gluons, we show that the proposed DarkQuest experiment at Fermilab will be able to test parameter space which has been previously inaccessible. We pay particular attention to the self-consistency of gluon-coupled ALP production and decay calculations, which has been recently shown to be a problem in many existing predictions. We also apply these results to explore existing constraints in the ALP parameter space.

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“…The η multiplicity agrees with measurements of refs. [68,69] (albeit at different beam energies); the η multiplicity is consistent with scaling the η rate by sin 2 θ ηη as a naive JHEP02(2022)036 [pb]…”

Section: Rare Meson Decays: M → a + Xmentioning

confidence: 59%

Axion-like particle searches at DarkQuest

Blinov

¹

,

Kowalczyk

²

,

Margaret

³

2022

J. High Energ. Phys.

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Axion-like particles (ALPs) interacting with the Standard Model can be abundantly produced in proton beam fixed-target experiments. Looking for their displaced decays is therefore an effective search strategy for ALPs with a mass in the MeV to GeV range. Focusing on the benchmark models where the ALP interacts dominantly with photons or gluons, we show that the proposed DarkQuest experiment at Fermilab will be able to test parameter space which has been previously inaccessible. We pay particular attention to the self-consistency of gluon-coupled ALP production and decay calculations, which has been recently shown to be a problem in many existing predictions. We also apply these results to explore existing constraints in the ALP parameter space.

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“…This full phase space extrapolation is based on a variety of available measurements, compiled in the plot shown on the left side of Fig. 7 (see [5][6][7][29][30][31][32][33]). On these data, a fit is performed with the power-law function given by Eq.…”

Section: Particle Cross-section Ratios In Full Phase Spacementioning

confidence: 99%

Nuclear dependence of light neutral meson production in p–A collisions at 400 GeV with NA60

Arnaldi¹,

Borer²,

Castor³

et al. 2019

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The NA60 experiment has studied low-mass muon pair production in proton-nucleus collisions with a system of Be, Cu, In, W, Pb and U targets, using a 400 GeV proton beam at the CERN SPS. The transverse momentum spectra of the ρ/ω and φ mesons are measured in the full p T range accessible, from p T = 0 up to 2 GeV/c. The nuclear dependence of the production cross sections of the η, ω and φ mesons has been found to be consistent with the power law σ pA ∝ A α , with the α parameter increasing as a function of p T for all the particles, and an approximate hierarchy α η ≈ α φ > α ω . The cross section ratios σ η /σ ω , σ ρ /σ ω and σ φ /σ ω have been studied as a function of the size A of the production target, and an increase of the η and φ yields relative to the ω is observed from p-Be to p-U collisions. a

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Inclusive η production at low transverse momentum in 63 GeV ppcollisions at the cern intersecting storage rings

Cited by 16 publications

References 33 publications

Axion-like Particle Searches at DarkQuest

Axion-like Particle Searches at DarkQuest

Axion-like particle searches at DarkQuest

Nuclear dependence of light neutral meson production in p–A collisions at 400 GeV with NA60

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