Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Piotr Lebiedowicz"'
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:
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
Publikováno v:
SciPost Physics Proceedings, Iss 8, p 121 (2022)
Exclusive production of axial-vector $f_{1}(1285)$ meson in proton-proton collisions via pomeron-pomeron fusion within the tensor-pomeron approach is discussed. Two ways to construct the pomeron-pomeron-$f_{1}$ coupling are presented. We adjust th
Externí odkaz:
https://doaj.org/article/388a331f2f0d48e1a265ff6355c9e8c6
Autor:
Piotr Lebiedowicz
Publikováno v:
SciPost Physics Proceedings, Iss 6, p 010 (2022)
We discuss the central exclusive production of $f_{1}$ mesons in proton-proton collisions. The diffractive pomeron-pomeron fusion process within the tensor-pomeron approach is considered. Two ways to construct the pomeron-pomeron-$f_{1}$ coupling are
Externí odkaz:
https://doaj.org/article/918421e6139445d68b53787b5b692046
Autor:
Piotr Lebiedowicz, Antoni Szczurek
Publikováno v:
Physics Letters B, Vol 810, Iss , Pp 135816- (2020)
We calculate inclusive cross section for f2(1270) tensor meson production via color singlet gluon-gluon fusion in the kt-factorization approach with unintegrated gluon distribution functions (UGDFs). The process may be potentially interesting in the
Externí odkaz:
https://doaj.org/article/2a6a0eff022245518a0ce3b4c6424efb
Publikováno v:
Physics Letters B, Vol 806, Iss , Pp 135475- (2020)
The production of the f0(980) meson at high energies is not well understood. We investigate two different potential mechanisms for inclusive scalar meson production in the kt-factorization approach: color-singlet gluon-gluon fusion and color evaporat
Externí odkaz:
https://doaj.org/article/ec8257177b254ef6bde257c1f637b7c8
Autor:
Piotr Lebiedowicz, Antoni Szczurek
Publikováno v:
Physics Letters B, Vol 772, Iss C, Pp 330-335 (2017)
We discuss the role of meson exchange mechanisms in γγ→γγ scattering. Several pseudoscalar (π0, η, η′(958), ηc(1S), ηc(2S)), scalar (f0(500), f0(980), a0(980), f0(1370), χc0(1P)) and tensor (f2(1270), a2(1320), f2′(1525), f2(1565), a2
Externí odkaz:
https://doaj.org/article/858760b37e3a47209346cc1c4e5a2ef5
Publikováno v:
Physics Letters B, Vol 763, Iss , Pp 382-387 (2016)
We discuss different models for the spin structure of the nonperturbative pomeron: scalar, vector, and rank-2 symmetric tensor. The ratio of single-helicity-flip to helicity-conserving amplitudes in polarised high-energy proton–proton elastic scatt
Externí odkaz:
https://doaj.org/article/150455e97ac1439c86b1655eec8f301d
Publikováno v:
Physical Review
We discuss central-exclusive production (CEP) of photons via different fusion processes in the reaction $pp \to pp \gamma$ at high energies, available at RHIC and LHC, within the tensor-pomeron model. We consider two types of processes, the photoprod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed9e1129694ebf3dcedaef1af0207c10
Publikováno v:
Physical Review
We discuss diffractive processes in proton-proton collisions at small momentum transfers without and with photon radiation. We consider the soft exclusive reactions $pp \to pp$, $p\bar{p} \to p\bar{p}$, and $pp \to pp \gamma$ within the tensor-pomero
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dbbfc69c7d211d865c0d43b7a8f3455
http://arxiv.org/abs/2206.03411
http://arxiv.org/abs/2206.03411