Type of tetraquark
Thedouble-charm tetraquark (T+ cc u d ) is a type of long-livedtetraquark that was discovered in 2021 in theLHCb experiment conducted at theLarge Hadron Collider .[ 3] [ 4] [ 2] [ 5] quarks : twocharm quarks , ananti-up and ananti-down quark.[ 1]
It has a theoretical computed mass of± 124 MeV/c 2 [ 1] [ 6]
It is hypothesized that studying the behavior of the double-charm tetraquark may play a part in explaining the behavior of thestrong force .[ 7] + cc beauty counterpart Tbb .[ 8]
^a b c d e Agaev, S.S.; Azizi, K.; Sundu, H. (February 2022). "Newly observed exotic doubly charmed mesonT c c + {\displaystyle T_{cc}^{+}} Nuclear Physics B .975 : 115650.arXiv :2108.00188 doi :10.1016/j.nuclphysb.2022.115650 .S2CID 236772263 . ^a b Aaij, R.; Abdelmotteleb, A. S. W.; Abellán Beteta, C.; Abudinen Gallego, F. J.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C. A.; Aiola, S. (2022-06-16)."Observation of an exotic narrow doubly charmed tetraquark" .Nature Physics .18 (7):751– 754.arXiv :2109.01038 Bibcode :2022NatPh..18..751L .doi :10.1038/s41567-022-01614-y .ISSN 1745-2481 .S2CID 237385202 . ^ "What to Know About the Newly Discovered Tetraquark at the Large Hadron Collider" .Gizmodo . 2 August 2021. Retrieved2021-09-27 .^ "Twice the charm: long-lived exotic particle discovered" .CERN . Retrieved2021-09-29 .^ Aaij, R.; Abdelmotteleb, A. S. W.; Beteta, C. Abellán; Gallego, F. J. Abudinen; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C. A.; Aiola, S. (2022-06-16)."Study of the doubly charmed tetraquark T⁺_cc" .Nature Communications .13 (1): 3351.doi :10.1038/s41467-022-30206-w .ISSN 2041-1723 .PMC 9203551 PMID 35710739 . ^ "LHCb experiment spots extraordinary double charmed tetraquark" .Nikhef . Retrieved2021-09-27 .^ Wood, Charlie (2021-09-27)." .Quanta Magazine . Retrieved2021-09-27 . ^ Turner, Ben (2021-08-05)."New 'doubly charming' particle could help unlock the secrets of how matter is built" .livescience.com . Retrieved2021-09-27 .
