scholarly journals Observation of resonance-like behavior of the pp → {pp}sπ0 reaction around √s = 2.65 GeV

2019 ◽  
Vol 204 ◽  
pp. 08008
Author(s):  
Vladimir Kurbatov ◽  
Dmitry Tsirkov ◽  
Vladimir Komarov ◽  
Bota Baimurzinova ◽  
Ainur Kunsafina ◽  
...  
Keyword(s):  
Differential Cross Section ◽  
Angular Dependence ◽  
Energy Dependence ◽  
Cross Section ◽  
Differential Cross ◽  
Proton Pair ◽  
Peak Region

The pp → {pp}sπ0 reaction, where {pp}s denotes a diproton, i.e. an unbound interacting proton pair in the 1S0 state, has been studied in order to obtain the forward differential cross section dσ/dΩ at 11 energy values in the region of 0.8–2.8 GeV. A resonance-like peak with the energy E0 = 2.647 ± 0.005 GeV and the width Γ = 0.26 ± 0.03 GeV has been observed in the energy dependence of the differential cross section dσ/dΩ at zero angle. The slope of the angular dependence for the energies in the peak region is different compared with the energies around it. Possible implications on this phenomenon are discussed.

scholarly journals Energy Dependence of the Dip in pp Elastic Scattering and the Pomeron Periphery

1977 ◽  
Vol 30 (3) ◽  
pp. 355 ◽  
Author(s):  
Mujahid Kamran ◽  
Mohammad Saleem
Keyword(s):  
Elastic Scattering ◽  
Differential Cross Section ◽  
Energy Dependence ◽  
Cross Section ◽  
Storage Ring ◽  
Differential Cross ◽  
Intersecting Storage Ring

It is shown that, at ISR (intersecting storage ring) energies, the energy dependence of the dip in the differential cross section for pp elastic scattering can be explained by the dual absorptive model with a peripheral pomeron.

scholarly journals Energy dependence of $$\phi $$ meson production at forward rapidity in pp collisions at the LHC

2021 ◽  
Vol 81 (8) ◽  
Author(s):  
S. Acharya ◽  
D. Adamová ◽  
A. Adler ◽  
J. Adolfsson ◽  
G. Aglieri Rinella ◽  
...  
Keyword(s):  
Differential Cross Section ◽  
Energy Dependence ◽  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Decay Channel ◽  
Center Of Mass ◽  
Meson Production ◽  
Pp Collisions ◽  
Rapidity Distributions

AbstractThe production of $$\phi $$ ϕ mesons has been studied in pp collisions at LHC energies with the ALICE detector via the dimuon decay channel in the rapidity region $$2.5< y < 4$$ 2.5 < y < 4 . Measurements of the differential cross section $$\mathrm{d}^2\sigma /\mathrm{d}y \mathrm{d}p_{\mathrm {T}}$$ d 2 σ / d y d p T are presented as a function of the transverse momentum ($$p_{\mathrm {T}}$$ p T ) at the center-of-mass energies $$\sqrt{s}=5.02$$ s = 5.02 , 8 and 13 TeV and compared with the ALICE results at midrapidity. The differential cross sections at $$\sqrt{s}=5.02$$ s = 5.02 and 13 TeV are also studied in several rapidity intervals as a function of $$p_{\mathrm {T}}$$ p T , and as a function of rapidity in three $$p_{\mathrm {T}}$$ p T intervals. A hardening of the $$p_{\mathrm {T}}$$ p T -differential cross section with the collision energy is observed, while, for a given energy, $$p_{\mathrm {T}}$$ p T spectra soften with increasing rapidity and, conversely, rapidity distributions get slightly narrower at increasing $$p_{\mathrm {T}}$$ p T . The new results, complementing the published measurements at $$\sqrt{s}=2.76$$ s = 2.76 and 7 TeV, allow one to establish the energy dependence of $$\phi $$ ϕ meson production and to compare the measured cross sections with phenomenological models. None of the considered models manages to describe the evolution of the cross section with $$p_{\mathrm {T}}$$ p T and rapidity at all the energies.

Energy dependence of proton-proton differential cross section

1988 ◽  
Vol 31 (5) ◽  
pp. 416-419
Author(s):  
G. G. Arushanov ◽  
I. M. Kirson ◽  
M. S. Yakubov
Keyword(s):  
Differential Cross Section ◽  
Energy Dependence ◽  
Cross Section ◽  
Differential Cross ◽  
Proton Proton
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