A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHC
We perform a quantitative analysis of the decays of ccc¯c¯ tetraquarks with JPC=0++,2++ into 4 muons and into hidden- and open-charm mesons and estimate, for the first time, the fully charmed tetraquark decay width. The calculated cross section upper limit is ∼39(780) fb for the 4 muons channel, and...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-12-01
|
| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269320307553 |
| id |
doaj-84dd0e7b5d1946a8a3fd2648c2f43648 |
|---|---|
| record_format |
Article |
| spelling |
doaj-84dd0e7b5d1946a8a3fd2648c2f436482020-12-09T04:14:39ZengElsevierPhysics Letters B0370-26932020-12-01811135952A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHCC. Becchi0J. Ferretti1A. Giachino2L. Maiani3E. Santopinto4Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Genova, via Dodecaneso 33, 16146 Genova, ItalyDepartment of Physics, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, FinlandIstituto Nazionale di Fisica Nucleare (INFN), Sezione di Genova, via Dodecaneso 33, 16146 Genova, ItalyDipartimento di Fisica and INFN, Sapienza Università di Roma, Piazzale Aldo Moro 2, I-00185 Roma, Italy; Corresponding author.Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Genova, via Dodecaneso 33, 16146 Genova, ItalyWe perform a quantitative analysis of the decays of ccc¯c¯ tetraquarks with JPC=0++,2++ into 4 muons and into hidden- and open-charm mesons and estimate, for the first time, the fully charmed tetraquark decay width. The calculated cross section upper limit is ∼39(780) fb for the 4 muons channel, and ∼42(616) pb for the D(⁎)D¯(⁎)→eμ channel, in the 0++(2++) case. Decay widths depend upon the additional parameter ξ=|ΨT(0)|2/|ΨJ/ψ(0)|2, which can be computed with a considerable error. We find Γ(0++)∼Γ(2++)=97±30. On the basis of our results and with the present sensitivity, LHCb should detect both 0++ and 2++ fully-charmed tetraquarks.http://www.sciencedirect.com/science/article/pii/S0370269320307553 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
C. Becchi J. Ferretti A. Giachino L. Maiani E. Santopinto |
| spellingShingle |
C. Becchi J. Ferretti A. Giachino L. Maiani E. Santopinto A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHC Physics Letters B |
| author_facet |
C. Becchi J. Ferretti A. Giachino L. Maiani E. Santopinto |
| author_sort |
C. Becchi |
| title |
A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHC |
| title_short |
A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHC |
| title_full |
A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHC |
| title_fullStr |
A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHC |
| title_full_unstemmed |
A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHC |
| title_sort |
study of ccc¯c¯ tetraquark decays in 4 muons and in d(⁎)d¯(⁎) at lhc |
| publisher |
Elsevier |
| series |
Physics Letters B |
| issn |
0370-2693 |
| publishDate |
2020-12-01 |
| description |
We perform a quantitative analysis of the decays of ccc¯c¯ tetraquarks with JPC=0++,2++ into 4 muons and into hidden- and open-charm mesons and estimate, for the first time, the fully charmed tetraquark decay width. The calculated cross section upper limit is ∼39(780) fb for the 4 muons channel, and ∼42(616) pb for the D(⁎)D¯(⁎)→eμ channel, in the 0++(2++) case. Decay widths depend upon the additional parameter ξ=|ΨT(0)|2/|ΨJ/ψ(0)|2, which can be computed with a considerable error. We find Γ(0++)∼Γ(2++)=97±30. On the basis of our results and with the present sensitivity, LHCb should detect both 0++ and 2++ fully-charmed tetraquarks. |
| url |
http://www.sciencedirect.com/science/article/pii/S0370269320307553 |
| work_keys_str_mv |
AT cbecchi astudyofcccctetraquarkdecaysin4muonsandinddatlhc AT jferretti astudyofcccctetraquarkdecaysin4muonsandinddatlhc AT agiachino astudyofcccctetraquarkdecaysin4muonsandinddatlhc AT lmaiani astudyofcccctetraquarkdecaysin4muonsandinddatlhc AT esantopinto astudyofcccctetraquarkdecaysin4muonsandinddatlhc AT cbecchi studyofcccctetraquarkdecaysin4muonsandinddatlhc AT jferretti studyofcccctetraquarkdecaysin4muonsandinddatlhc AT agiachino studyofcccctetraquarkdecaysin4muonsandinddatlhc AT lmaiani studyofcccctetraquarkdecaysin4muonsandinddatlhc AT esantopinto studyofcccctetraquarkdecaysin4muonsandinddatlhc |
| _version_ |
1724388539083259904 |