Zobrazeno 1 - 10
of 470
pro vyhledávání: '"Sawada, Takahiro"'
Publikováno v:
Phys. Lett. B 855, 138820 (2024)
The kaon parton distribution functions (PDFs) are poorly known due to paucity of kaon-induced Drell-Yan data. Nevertheless, these Drell-Yan data suggest a softer valence $u$ quark distribution of kaon than that of pion. We discuss the opportunity to
Externí odkaz:
http://arxiv.org/abs/2402.02860
Autor:
Chang, Wen-Chen, Hsieh, Chia-Yu, Lian, Yu-Shiang, Peng, Jen-Chieh, Platchkov, Stephane, Sawada, Takahiro
Publikováno v:
AAPPS Bulletin volume 33, Article number: 15 (2023)
The pion, as the Goldstone boson of the strong interaction, is the lightest QCD bound state and responsible for the long-range nucleon-nucleon interaction inside the nucleus. Our knowledge on the pion partonic structure is limited by the existing Dre
Externí odkaz:
http://arxiv.org/abs/2307.02888
Publikováno v:
Phys. Rev. D 107, 056008 (2023)
We investigate how charmonium hadroproduction at fixed-target energies can be used to constrain the gluon distribution in pions. Using nonrelativistic QCD (NRQCD) formulation, the $J/\psi$ and $\psi(2S)$ cross sections as a function of longitudinal m
Externí odkaz:
http://arxiv.org/abs/2209.04072
Autor:
Ota, Tsuyoshi1 (AUTHOR), Sawada, Takahiro1 (AUTHOR) taktak319@yahoo.co.jp, Shimoura, Hiroyuki1 (AUTHOR), Terao, Yuya1 (AUTHOR), Ito, Tatsuro1 (AUTHOR), Okajima, Katsunori1 (AUTHOR), Kadotani, Makoto1 (AUTHOR), Onishi, Yoshio1 (AUTHOR)
Publikováno v:
Clinical Case Reports. Apr2024, Vol. 12 Issue 4, p1-5. 5p.
Autor:
Hsieh, Chia-Yu, Lian, Yu-Shiang, Chang, Wen-Chen, Peng, Jen-Chieh, Platchkov, Stephane, Sawada, Takahiro
Publikováno v:
Chinese Journal of Physics 73 (2021) 13
We present an analysis of hadroproduction of $J/\psi$ and $\psi(2S)$ at fixed-target energies in the framework of non-relativistic QCD (NRQCD). Using both pion- and proton-induced data, a new determination of the color-octet long-distance matrix elem
Externí odkaz:
http://arxiv.org/abs/2103.11660
Autor:
Takao, Yuki, Mori, Osamu, Matsumoto, Jun, Chujo, Toshihiro, Kikuchi, Shota, Kebukawa, Yoko, Ito, Motoo, Okada, Tatsuaki, Aoki, Jun, Yamada, Kazuhiko, Sawada, Takahiro, Kawasaki, Shigeo, Kashioka, Shuya, Oki, Yusuke, Saiki, Takanao, Kawaguchi, Jun’ichiro
Publikováno v:
In Acta Astronautica December 2023 213:121-137
Publikováno v:
Phys. Rev. D 102, 054024 (2020)
The gluon distributions of the pion obtained from various global fits exhibit large variations among them. Within the framework of the color evaporation model, we show that the existing pion-induced $J/\psi$ production data, usually not included in t
Externí odkaz:
http://arxiv.org/abs/2006.06947
We investigate the nucleon and pion gluon distribution functions in the framework of holographic QCD, focusing on the small Bjorken x region. Based on an approximate relation, the gluon distributions are extracted from structure functions of the unpo
Externí odkaz:
http://arxiv.org/abs/1910.10008
We present our analysis on the valence quark distribution functions of the $K^{+}$ meson, $v^{K (u)} (x, Q^2)$ and $v^{K (\bar{s})} (x, Q^2)$, taking into account the meson cloud effects in the framework of the chiral constituent quark model. Assumin
Externí odkaz:
http://arxiv.org/abs/1810.04032
The only experimental information on the parton distribution of kaons was obtained from the scarce kaon-induced Drell-Yan cross section data. From these data, evidence for a valence $u$ quark distribution of kaon softer than that of pion was found. W
Externí odkaz:
http://arxiv.org/abs/1711.00839