| |
Record |
Links |
|
Author  |
LHCb Collaboration (Aaij, R. et al); Fernandez Casani, A.; Jaimes Elles, S.J.; Jashal, B.K.; Libralon, S.; Martinez-Vidal, F.; Mazorra de Cos, J.; Oyanguren, A.; Rebollo De Miguel, M.; Sanderswood, I.; Zhuo, J. |
|
| |
Title |
First Determination of the Spin-Parity of Ξc(3055) +,0 Baryons |
Type |
Journal Article |
| |
Year |
2025 |
Publication |
Physical Review Letters |
Abbreviated Journal |
Phys. Rev. Lett. |
|
| |
Volume |
134 |
Issue |
8 |
Pages |
081901 - 13pp |
|
| |
Keywords |
|
|
| |
Abstract |
The Xi(0(-))(b) -> Xi(c)(3055)(+(0))(-> D+(0)Lambda)pi(-) decay chains are observed, and the spin-parity of Xi(c)(3055)(+(0)) baryons is determined for the first time. The measurement is performed using protonproton collision data at a center-of-mass energy of root s = 13 TeV, corresponding to an integrated luminosity of 5.4 fb(-1), recorded by the LHCb experiment between 2016 and 2018. The spin-parity of the Xi(c)(3055)(+(0)) baryons is determined to be 3/2(+) with a significance of more than 6.5 sigma (3.5 sigma) compared to all other tested hypotheses. The up-down asymmetries of the Xi(0(-))(b) -> Xi(c)(3055)(+(0))pi(-) transitions are measured to be -0.92 +/- 0.10 +/- 0.05 (-0.92 +/- 0.16 +/- 0.22), consistent with maximal parity violation, where the first uncertainty is statistical and the second is systematic. These results support the hypothesis that the Xi(c)(3055)(+(0)) baryons correspond to the first D-wave lambda-mode excitation of the Xi(c) flavor triplet. |
|
| |
Address |
[Dekkers, S.; Egede, U.; Fujii, Y.; Hadavizadeh, T.; Henderson, R. D. L.; Lane, J. J.; Liu, F. L.; Song, R.; Walton, E. J.; Ward, J. A.] Monash Univ, Sch Phys & Astron, Melbourne, Australia |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
Amer Physical Soc |
Place of Publication |
|
Editor |
|
|
| |
Language |
English |
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0031-9007 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
WOS:001459987500002 |
Approved |
no |
|
| |
Is ISI |
yes |
International Collaboration |
yes |
|
| |
Call Number |
IFIC @ pastor @ |
Serial |
6659 |
|
| Permanent link to this record |
