Abstract
Changes in the masses of charmonium states in nuclear matter as a result of the modification of QCD vacuum in nuclear medium are studied in the perturbative QCD approach. For the leading-order effect due to change of gluon condensate, we use the leading-order QCD formula. The higher-twist effect that is related to the partial restoration of chiral symmetry, we use instead a hadronic model that includes the effect due to change of quark condensate in nuclear medium. It is found that although the mass of J/ψ decreases slightly in nuclear matter, those of ψ(3686) and ψ(3770) states are reduced appreciably. Experimental study of the mass shift of charmonium states in nuclear matter can thus provide valuable information on how QCD vacuum changes in nuclear medium.
| Original language | English |
|---|---|
| Pages (from-to) | 173-181 |
| Number of pages | 9 |
| Journal | Progress of Theoretical Physics Supplement |
| Volume | 149 |
| DOIs | |
| Publication status | Published - 2003 Jan 1 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
}
Charmonium in Nuclear Matter and Chiral Symmetry. / Lee, Su Houng; Che Ming, K. O.
In: Progress of Theoretical Physics Supplement, Vol. 149, 01.01.2003, p. 173-181.Research output: Contribution to journal › Article
TY - JOUR
T1 - Charmonium in Nuclear Matter and Chiral Symmetry
AU - Lee, Su Houng
AU - Che Ming, K. O.
PY - 2003/1/1
Y1 - 2003/1/1
N2 - Changes in the masses of charmonium states in nuclear matter as a result of the modification of QCD vacuum in nuclear medium are studied in the perturbative QCD approach. For the leading-order effect due to change of gluon condensate, we use the leading-order QCD formula. The higher-twist effect that is related to the partial restoration of chiral symmetry, we use instead a hadronic model that includes the effect due to change of quark condensate in nuclear medium. It is found that although the mass of J/ψ decreases slightly in nuclear matter, those of ψ(3686) and ψ(3770) states are reduced appreciably. Experimental study of the mass shift of charmonium states in nuclear matter can thus provide valuable information on how QCD vacuum changes in nuclear medium.
AB - Changes in the masses of charmonium states in nuclear matter as a result of the modification of QCD vacuum in nuclear medium are studied in the perturbative QCD approach. For the leading-order effect due to change of gluon condensate, we use the leading-order QCD formula. The higher-twist effect that is related to the partial restoration of chiral symmetry, we use instead a hadronic model that includes the effect due to change of quark condensate in nuclear medium. It is found that although the mass of J/ψ decreases slightly in nuclear matter, those of ψ(3686) and ψ(3770) states are reduced appreciably. Experimental study of the mass shift of charmonium states in nuclear matter can thus provide valuable information on how QCD vacuum changes in nuclear medium.
UR - http://www.scopus.com/inward/record.url?scp=0141725669&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0141725669&partnerID=8YFLogxK
U2 - 10.1143/PTPS.149.173
DO - 10.1143/PTPS.149.173
M3 - Article
AN - SCOPUS:0141725669
VL - 149
SP - 173
EP - 181
JO - Progress of Theoretical Physics
JF - Progress of Theoretical Physics
SN - 0033-068X
ER -