Confirmation of pp̄ Mass Threshold Enhancement and X(1835) at BESIII

2010 ◽  
Author(s):  
Huang Yanping ◽  
Volker Crede ◽  
Paul Eugenio ◽  
A. Ostrovidov ◽  
Keyword(s):  
Threshold Enhancement

scholarly journals Near threshold enhancement of pp¯ system and pp¯ elastic scattering

2010 ◽  
Vol 692 (2) ◽  
pp. 136-142 ◽  
Author(s):  
G.Y. Chen ◽  
H.R. Dong ◽  
J.P. Ma
Keyword(s):  
Elastic Scattering ◽  
Threshold Enhancement ◽  
Near Threshold

scholarly journals RECENT RESULTS ON LIGHT HADRON SPECTROSCOPY AT BESIII

2011 ◽  
Vol 02 ◽  
pp. 183-187
Author(s):  
◽  
Y. CHEN
Keyword(s):  
Mass Spectrum ◽  
Matrix Element ◽  
Direct Measurement ◽  
International Workshop ◽  
Charm Physics ◽  
Hadron Spectroscopy ◽  
Threshold Enhancement ◽  
Light Hadron ◽  
The Matrix ◽  
Near Threshold

Several measurements on light hadron spectroscopy have been achieved with Beijing Spectrometry III (BESIII). BESII results such as a near threshold enhancement on the [Formula: see text] invariants mass spectrum namely X(1860) and a resonance X(1835) have been confirmed with 225 million J/ψ data accumulated from June 12, 2009 to July 28, 2009. Along with some other preliminary BESIII results including observations of X(1870), X(2120) and X(2370); the first direct measurement of a0(980)/f0(980) mixing; and an improved measurement on the matrix element of decay η′ → ππη have been reported at the 4th international workshop on charm physics.

scholarly journals A possible explanation of the threshold enhancement in the process $ {{e^+e^-\rightarrow \Lambda\bar{\Lambda} }}$

2019 ◽  
Vol 43 (11) ◽  
pp. 113105
Author(s):  
Li-Ye Xiao ◽  
Xin-Zhen Weng ◽  
Xian-Hui Zhong ◽  
Shi-Lin Zhu
Keyword(s):  
Threshold Enhancement

Transverse mode instability threshold enhancement in Yb-doped fiber lasers by cavity modification

2018 ◽  
Vol 57 (21) ◽  
pp. 5992 ◽  
Author(s):  
Kamran Hejaz ◽  
Mahdi Shayganmanesh ◽  
Ali Roohforouz ◽  
Reza Rezaei-Nasirabad ◽  
Ali Abedinajafi ◽  
...  
Keyword(s):  
Fiber Lasers ◽  
Transverse Mode ◽  
Instability Threshold ◽  
Mode Instability ◽  
Threshold Enhancement

scholarly journals Threshold enhancement of diphoton resonances

2016 ◽  
Vol 761 ◽  
pp. 8-15 ◽  
Author(s):  
Aoife Bharucha ◽  
Abdelhak Djouadi ◽  
Andreas Goudelis
Keyword(s):  
Threshold Enhancement

OBSERVATION OF THE ABC EFFECT IN THE FIRST EXCLUSIVE MEASUREMENTS OF pn → dπ0π0

2007 ◽  
Vol 22 (02n03) ◽  
pp. 617-620 ◽  
Author(s):  
◽  
O. Khakimova ◽  
M. Bashkanov ◽  
T. Skorodko ◽  
C. Bargholtz ◽  
...  
Keyword(s):  
Mass Spectrum ◽  
Invariant Mass ◽  
Bound States ◽  
Fundamental System ◽  
Theoretical Models ◽  
Invariant Mass Spectrum ◽  
High Mass ◽  
Threshold Enhancement ◽  
Low Mass ◽  
Mass Enhancement

The reaction pn → dπ0π0 constitutes the most fundamental system for the study of the ABC effect - a puzzling threshold enhancement in the ππ invariant mass spectrum of the ππ system in double-pionic fusion to nuclear bound states. The first exclusive measurements of this reaction have now been carried out at CELSIUS-WASA. They exhibit a striking low-mass enhancement in the ππ invariant mass spectrum, prove it to be a σ-channel phenomenon and falsify conventional theoretical models, which predict an associated high-mass enhancement not present in the new exclusive data. In the kinematically complete data sample we observe a ΔΔ excitation, where the interaction between the two Δ obviously plays a crucial role for the generation of the ππ low-mass enhancement.

scholarly journals Reconciling theX(3872)with the near-threshold enhancement in theD0D¯*0final state

2007 ◽  
Vol 76 (3) ◽  
Author(s):  
C. Hanhart ◽  
Yu. S. Kalashnikova ◽  
A. E. Kudryavtsev ◽  
A. V. Nefediev
Keyword(s):  
Threshold Enhancement ◽  
Near Threshold
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