Zobrazeno 1 - 10
of 465
pro vyhledávání: '"Antoni, Szczurek"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-21 (2024)
Abstract We continue our work on the light-front formulation of quarkonium γ ∗ γ transition form factors, extending the formalism to J PC = 2++ tensor meson states. We present an analysis of γ ∗ γ → χ c2 transition amplitude and the pertin
Externí odkaz:
https://doaj.org/article/7070a2c6976549ec904b4a3eae3b8804
Autor:
Barbara Linek, Agnieszka Łuszczak, Marta Łuszczak, Roman Pasechnik, Wolfgang Schäfer, Antoni Szczurek
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-24 (2023)
Abstract We study the exclusive diffractive c c ¯ $$ c\overline{c} $$ photoproduction in ultraperipheral pA collisions. The formalism makes use of off-diagonal generalizations of the unintegrated gluon distribution, the so-called generalized transve
Externí odkaz:
https://doaj.org/article/78393b347db14fb3bf9eab16e02a9911
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 11, Pp 1-8 (2022)
Abstract We calculate the total cross section and transverse momentum distributions for the production of the enigmatic $$\chi _{c1}(3872)$$ χ c 1 ( 3872 ) (or X(3872)) assuming different scenarios: $$c \bar{c}$$ c c ¯ state and $$D^{0*} {\bar{D}}^
Externí odkaz:
https://doaj.org/article/4c8f3a5205a949b6a1868b52bf6b67e8
Publikováno v:
Physics Letters B, Vol 843, Iss , Pp 138046- (2023)
One of the main goals of future electron-ion colliders is to improve our understanding of the structure of hadrons. In this letter, we study the exclusive ηc production by γ⁎γ interactions in eA collisions and demonstrate that future experimenta
Externí odkaz:
https://doaj.org/article/00439155bc714812998ae708896e553a
Publikováno v:
Physics Letters B, Vol 843, Iss , Pp 138053- (2023)
We evaluate the cross section for diffractive bremsstrahlung of a single photon in the pp→ppγ reaction at high energies and at forward photon rapidities. Several differential distributions, for instance, in y, k⊥ and ω, the rapidity, the absolu
Externí odkaz:
https://doaj.org/article/9c6107841bd849cfbc9bf83d115b2003
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 9, Pp 1-27 (2022)
Abstract In this work, we perform a detailed study of transition form factors for axial- vector meson production via the two-photon fusion process γ * γ * → 1++, with space-like virtual photons in the initial state and a P-wave axial-vector quark
Externí odkaz:
https://doaj.org/article/dceb35d20e7041db8b31b2946524885e
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 3, Pp 1-14 (2022)
Abstract The predictions for the atmospheric neutrino flux at high energies strongly depend on the contribution of prompt neutrinos, which are determined by the production of charmed mesons in the atmosphere at very forward rapidities. In this paper
Externí odkaz:
https://doaj.org/article/4af3400a6a954a029b81513b771c0801
Publikováno v:
Physics Letters B, Vol 836, Iss , Pp 137595- (2023)
We calculate the differential cross section dσ/dt for the diffractive photoproduction process γp→ρp and compare to recent data extracted by the CMS collaboration from ultraperipheral proton-lead collisions. Our model is based on two-gluon exchan
Externí odkaz:
https://doaj.org/article/87dbe1343e5a4c3895151f10b2d3c207
Autor:
Rafał Maciuła, Antoni Szczurek
Publikováno v:
Physics Letters B, Vol 835, Iss , Pp 137530- (2022)
We discuss production of neutral D mesons in proton-proton collisions at the LHC (fixed target mode) in the framework of the BJM recombination model. We present rapidity and transverse momentum distributions of D mesons and compare the recombination
Externí odkaz:
https://doaj.org/article/a1fb647b67a54cc59c5a5a39a469da7e
Publikováno v:
Physics Letters B, Vol 835, Iss , Pp 137497- (2022)
The two-tensor-pomeron model proposed previously to describe low x DIS data is applied to real and virtual Compton scattering on a proton. The model includes two tensor pomerons, a soft and a hard one, and tensor reggeons. We include contributions of
Externí odkaz:
https://doaj.org/article/a9e883de3d4f42689e3a247820591adb