Dalitz plot studies of D0 → KS0π+π− decays
The availaible data on the D0 → KS0π+π− decays are analysed in the framework of the quasi two-body QCD factorization approximation. The annihilation, via Wexchange, amplitudes are added to the weak-decay tree amplitudes. The doubly Cabibbo suppressed parts of the amplitudes are also considered. The...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2012-12-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20123705001 |
| _version_ | 1818876296486191104 |
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| author | Loiseau B. Dedonder J.-P. Furman A. Kamiński R. Leśniak L. |
| author_facet | Loiseau B. Dedonder J.-P. Furman A. Kamiński R. Leśniak L. |
| author_sort | Loiseau B. |
| collection | DOAJ |
| description | The availaible data on the D0 → KS0π+π− decays are analysed in the framework of the quasi two-body QCD factorization approximation. The annihilation, via Wexchange, amplitudes are added to the weak-decay tree amplitudes. The doubly Cabibbo suppressed parts of the amplitudes are also considered. The strong interactions between the kaon-pion and pion-pion pairs in the S-, P- and D-final states are described in terms of the corresponding form factors. The kaon-pion or pion-pion scalar and vector form factors are constrained by other experimental data. Unitarity, analyticity and chiral symmetry are also used to obtain their functional forms. We go through a minimization procedure to reproduce the KS0π−, KS0π+ and π+ π- effective mass projections of the Dalitz plot distributions. The large number (27) of non-zero amplitudes leads to a large number of parameters. The resulting model distributions and branching fractions are compared to the accurate Belle Collaboration data. |
| first_indexed | 2024-12-19T13:40:08Z |
| format | Article |
| id | doaj.art-38cbf37360ca43ef8b5d8cf70b0a6425 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-19T13:40:08Z |
| publishDate | 2012-12-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-38cbf37360ca43ef8b5d8cf70b0a64252022-12-21T20:19:02ZengEDP SciencesEPJ Web of Conferences2100-014X2012-12-01370500110.1051/epjconf/20123705001Dalitz plot studies of D0 → KS0π+π− decaysLoiseau B.Dedonder J.-P.Furman A.Kamiński R.Leśniak L.The availaible data on the D0 → KS0π+π− decays are analysed in the framework of the quasi two-body QCD factorization approximation. The annihilation, via Wexchange, amplitudes are added to the weak-decay tree amplitudes. The doubly Cabibbo suppressed parts of the amplitudes are also considered. The strong interactions between the kaon-pion and pion-pion pairs in the S-, P- and D-final states are described in terms of the corresponding form factors. The kaon-pion or pion-pion scalar and vector form factors are constrained by other experimental data. Unitarity, analyticity and chiral symmetry are also used to obtain their functional forms. We go through a minimization procedure to reproduce the KS0π−, KS0π+ and π+ π- effective mass projections of the Dalitz plot distributions. The large number (27) of non-zero amplitudes leads to a large number of parameters. The resulting model distributions and branching fractions are compared to the accurate Belle Collaboration data.http://dx.doi.org/10.1051/epjconf/20123705001 |
| spellingShingle | Loiseau B. Dedonder J.-P. Furman A. Kamiński R. Leśniak L. Dalitz plot studies of D0 → KS0π+π− decays EPJ Web of Conferences |
| title | Dalitz plot studies of D0 → KS0π+π− decays |
| title_full | Dalitz plot studies of D0 → KS0π+π− decays |
| title_fullStr | Dalitz plot studies of D0 → KS0π+π− decays |
| title_full_unstemmed | Dalitz plot studies of D0 → KS0π+π− decays |
| title_short | Dalitz plot studies of D0 → KS0π+π− decays |
| title_sort | dalitz plot studies of d0 ks0π π decays |
| url | http://dx.doi.org/10.1051/epjconf/20123705001 |
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