B s → K 0 K ¯ 0 $$ {B}_s\to {K}^0{\overline{K}}^0 $$ beyond the Standard Model
Abstract Within the Standard Model, the branching fraction of the rare decay B s → K 0 K ¯ 0 $$ {B}_s\to {K}^0{\overline{K}}^0 $$ is related to other decay rates and CP asymmetries through the approximate SU(3) flavor symmetry of the strong interactions and the heavy-quark limit. Three such relation...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-05-01
|
| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP05(2025)210 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850224069055610880 |
|---|---|
| author | Yuval Grossman Matthias Neubert Yosef Nir Yogev Shpilman Yehonatan Viernik |
| author_facet | Yuval Grossman Matthias Neubert Yosef Nir Yogev Shpilman Yehonatan Viernik |
| author_sort | Yuval Grossman |
| collection | DOAJ |
| description | Abstract Within the Standard Model, the branching fraction of the rare decay B s → K 0 K ¯ 0 $$ {B}_s\to {K}^0{\overline{K}}^0 $$ is related to other decay rates and CP asymmetries through the approximate SU(3) flavor symmetry of the strong interactions and the heavy-quark limit. Three such relations were shown to be violated at a level of about 3σ each. By means of a systematic search for new-physics explanations of these puzzles, we find that possible solutions are highly fine-tuned and either excluded by other data or rather implausible. The tight correlation between B s → K K ¯ $$ {B}_s\to K\overline{K} $$ and B → πK decays, which is maintained even in the presence of flavor-specific new-physics operators, plays a central role in our analysis. |
| format | Article |
| id | doaj-art-b4d12c69ee45487eb9eb6c159c8f3ae7 |
| institution | OA Journals |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-b4d12c69ee45487eb9eb6c159c8f3ae72025-08-20T02:05:45ZengSpringerOpenJournal of High Energy Physics1029-84792025-05-012025512310.1007/JHEP05(2025)210B s → K 0 K ¯ 0 $$ {B}_s\to {K}^0{\overline{K}}^0 $$ beyond the Standard ModelYuval Grossman0Matthias Neubert1Yosef Nir2Yogev Shpilman3Yehonatan Viernik4Department of Physics & LEPP, Cornell UniversityDepartment of Physics & LEPP, Cornell UniversityDepartment of Particle Physics and Astrophysics, Weizmann Institute of ScienceDepartment of Particle Physics and Astrophysics, Weizmann Institute of ScienceDepartment of Particle Physics and Astrophysics, Weizmann Institute of ScienceAbstract Within the Standard Model, the branching fraction of the rare decay B s → K 0 K ¯ 0 $$ {B}_s\to {K}^0{\overline{K}}^0 $$ is related to other decay rates and CP asymmetries through the approximate SU(3) flavor symmetry of the strong interactions and the heavy-quark limit. Three such relations were shown to be violated at a level of about 3σ each. By means of a systematic search for new-physics explanations of these puzzles, we find that possible solutions are highly fine-tuned and either excluded by other data or rather implausible. The tight correlation between B s → K K ¯ $$ {B}_s\to K\overline{K} $$ and B → πK decays, which is maintained even in the presence of flavor-specific new-physics operators, plays a central role in our analysis.https://doi.org/10.1007/JHEP05(2025)210Bottom QuarksRare DecaysEffective Field Theories of QCDFlavour Symmetries |
| spellingShingle | Yuval Grossman Matthias Neubert Yosef Nir Yogev Shpilman Yehonatan Viernik B s → K 0 K ¯ 0 $$ {B}_s\to {K}^0{\overline{K}}^0 $$ beyond the Standard Model Journal of High Energy Physics Bottom Quarks Rare Decays Effective Field Theories of QCD Flavour Symmetries |
| title | B s → K 0 K ¯ 0 $$ {B}_s\to {K}^0{\overline{K}}^0 $$ beyond the Standard Model |
| title_full | B s → K 0 K ¯ 0 $$ {B}_s\to {K}^0{\overline{K}}^0 $$ beyond the Standard Model |
| title_fullStr | B s → K 0 K ¯ 0 $$ {B}_s\to {K}^0{\overline{K}}^0 $$ beyond the Standard Model |
| title_full_unstemmed | B s → K 0 K ¯ 0 $$ {B}_s\to {K}^0{\overline{K}}^0 $$ beyond the Standard Model |
| title_short | B s → K 0 K ¯ 0 $$ {B}_s\to {K}^0{\overline{K}}^0 $$ beyond the Standard Model |
| title_sort | b s k 0 k ¯ 0 b s to k 0 overline k 0 beyond the standard model |
| topic | Bottom Quarks Rare Decays Effective Field Theories of QCD Flavour Symmetries |
| url | https://doi.org/10.1007/JHEP05(2025)210 |
| work_keys_str_mv | AT yuvalgrossman bsk0k0bstok0overlinek0beyondthestandardmodel AT matthiasneubert bsk0k0bstok0overlinek0beyondthestandardmodel AT yosefnir bsk0k0bstok0overlinek0beyondthestandardmodel AT yogevshpilman bsk0k0bstok0overlinek0beyondthestandardmodel AT yehonatanviernik bsk0k0bstok0overlinek0beyondthestandardmodel |