JAEA
  • help
  • PC | SP
  • JP | EN
          
検索対象：     
報告書番号：
※ 半角英数字
 年 ～ 
 年
全てクリア
検索結果：　2 件中 1件目～2件目を表示
  • 1

発表形式

Initialising ...

選択項目を絞り込む

掲載資料名

Initialising ...

発表会議名

Initialising ...

筆頭著者名

Initialising ...

キーワード

Initialising ...

使用言語

Initialising ...

発行年

Initialising ...

開催年

Initialising ...

選択した検索結果をダウンロード

論文

Observation of excited $$Omega_c$$ charmed baryons in $$e^+e^-$$ collisions

Yelton, J.*; 谷田 聖; Belle Collaboration*; 他177名*

Physical Review D, 97(5), p.051102_1 - 051102_6, 2018/03

https://doi.org/10.1103/PhysRevD.97.051102
 被引用回数：12 パーセンタイル：3.72(Astronomy & Astrophysics)

Using the entire Belle data sample of 980 $${rm fb}^{-1}$$ of $$e^+e^-$$ collisions, we present the results of a study of excited $$Omega_c$$ charmed baryons in the decay mode $$Xi_c^+K^-$$. We show confirmation of four of the five narrow states reported by the LHCb Collaboration: the $$Omega_c(3000)$$, $$Omega_c(3050)$$, $$Omega_c(3066)$$, and $$Omega_c(3090)$$.

論文

First observation of $$gammagamma to pbar{p} K^+K^-$$ and search for exotic baryons in $$pK$$ systems

Shen, C. P.*; 谷田 聖; Belle Collaboration*; 他177名*

Physical Review D, 93(11), p.112017_1 - 112017_9, 2016/06

AA2016-0387.pdf:0.89MB

https://doi.org/10.1103/PhysRevD.93.112017
 被引用回数：1 パーセンタイル：86.21(Astronomy & Astrophysics)

The process $$gammagamma to pbar{p} K^+K^-$$ and its intermediate processes are measured for the first time using a 980 fb$$^{-1}$$ data sample collected with the Belle detector at the KEKB asymmetric-energy $$e^+e^-$$ collider. The production of $$pbar{p} K^+K^-$$ and a $$Lambda(1520)^0$$ ($$bar{Lambda}(1520)^0$$) signal in the $$pK^-$$ ($$bar{p}K^+$$) invariant mass spectrum are clearly observed. However, no evidence for an exotic baryon near 1540 MeV/$$c^2$$, denoted as $$Theta(1540)^0$$ ($$bar{Theta}(1540)^0$$) or$$Theta(1540)^{++}$$ ($$bar{Theta}(1540)^{--}$$), is seen in the $$pK^-$$ ($$bar{p}K^+$$) or $$pK^+$$ ($$bar{p}K^-$$) invariant mass spectra. Cross sections for $$gammagamma to pbar{p} K^+K^-$$, $$Lambda(1520)^0bar{p}K^+ + c.c.$$ and the products $$sigma(gammagamma to Theta(1540)^0 bar{p} K^+ + c.c.){cal B}(Theta(1540)^0 to pK^-)$$ and $$sigma(gammagamma to Theta(1540)^{++} bar{p} K^- + c.c.){cal B}(Theta(1540)^{++} to pK^+)$$ are measured. We also determine upper limits on the products of the $$chi_{c0}$$ and $$chi_{c2}$$ two-photon decay widths and their branching fractions to $$pbar{p} K^+K^-$$ at the 90% credibility level.

2 件中 1件目～2件目を表示
  • 1