Measurements of B(B̄0→Λc+p̄) and B(B- →Λc+p̄π-) and studies of Λc+π- resonances
We present an investigation of the decays B̄0→Λc+p̄ and B-→Λc+p̄π- based on 383×106 Υ(4S) →BB̄ decays recorded with the BABAR detector. We measure the branching fractions of these decays; their ratio is B(B-→Λc+p̄π-)/ B(B̄0→Λc+p̄)=15.4±1.8±0.3. The B-→Λc+p̄π- process exhibits an enhancement at the Λ...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| 格式: | Journal article |
| 語言: | English |
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2008
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| _version_ | 1826283844310925312 |
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| author | Aubert, B Bona, M Karyotakis, Y Lees, J Poireau, V Prencipe, E Prudent, X Tisserand, V Garra Tico, J Grauges, E Lopez, L Palano, A Pappagallo, M Eigen, G Stugu, B Sun, L Abrams, G Battaglia, M Brown, D Cahn, R Jacobsen, R Kerth, LT Kolomensky, Y Kukartsev, G Lynch, G |
| author_facet | Aubert, B Bona, M Karyotakis, Y Lees, J Poireau, V Prencipe, E Prudent, X Tisserand, V Garra Tico, J Grauges, E Lopez, L Palano, A Pappagallo, M Eigen, G Stugu, B Sun, L Abrams, G Battaglia, M Brown, D Cahn, R Jacobsen, R Kerth, LT Kolomensky, Y Kukartsev, G Lynch, G |
| author_sort | Aubert, B |
| collection | OXFORD |
| description | We present an investigation of the decays B̄0→Λc+p̄ and B-→Λc+p̄π- based on 383×106 Υ(4S) →BB̄ decays recorded with the BABAR detector. We measure the branching fractions of these decays; their ratio is B(B-→Λc+p̄π-)/ B(B̄0→Λc+p̄)=15.4±1.8±0.3. The B-→Λc+p̄π- process exhibits an enhancement at the Λc+p̄ threshold and is a laboratory for searches for excited charm baryon states. We observe the resonant decays B-→Σc(2455)0p̄ and B-→Σc(2800)0p̄ but see no evidence for B-→Σc(2520) 0p̄. This is the first observation of the decay B-→Σc(2800) 0p̄; however, the mass of the observed excited Σc0 state is (2846±8±10)MeV/c2, which is somewhat inconsistent with previous measurements. Finally, we examine the angular distribution of the B-→Σc(2455)0p̄ decays and measure the spin of the Σc(2455)0 baryon to be 1/2, as predicted by the quark model. © 2008 The American Physical Society. |
| first_indexed | 2024-03-07T01:04:57Z |
| format | Journal article |
| id | oxford-uuid:8b02e3e6-eb06-499c-94b4-c5cb82d922e5 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:04:57Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:8b02e3e6-eb06-499c-94b4-c5cb82d922e52022-03-26T22:35:25ZMeasurements of B(B̄0→Λc+p̄) and B(B- →Λc+p̄π-) and studies of Λc+π- resonancesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8b02e3e6-eb06-499c-94b4-c5cb82d922e5EnglishSymplectic Elements at Oxford2008Aubert, BBona, MKaryotakis, YLees, JPoireau, VPrencipe, EPrudent, XTisserand, VGarra Tico, JGrauges, ELopez, LPalano, APappagallo, MEigen, GStugu, BSun, LAbrams, GBattaglia, MBrown, DCahn, RJacobsen, RKerth, LTKolomensky, YKukartsev, GLynch, GWe present an investigation of the decays B̄0→Λc+p̄ and B-→Λc+p̄π- based on 383×106 Υ(4S) →BB̄ decays recorded with the BABAR detector. We measure the branching fractions of these decays; their ratio is B(B-→Λc+p̄π-)/ B(B̄0→Λc+p̄)=15.4±1.8±0.3. The B-→Λc+p̄π- process exhibits an enhancement at the Λc+p̄ threshold and is a laboratory for searches for excited charm baryon states. We observe the resonant decays B-→Σc(2455)0p̄ and B-→Σc(2800)0p̄ but see no evidence for B-→Σc(2520) 0p̄. This is the first observation of the decay B-→Σc(2800) 0p̄; however, the mass of the observed excited Σc0 state is (2846±8±10)MeV/c2, which is somewhat inconsistent with previous measurements. Finally, we examine the angular distribution of the B-→Σc(2455)0p̄ decays and measure the spin of the Σc(2455)0 baryon to be 1/2, as predicted by the quark model. © 2008 The American Physical Society. |
| spellingShingle | Aubert, B Bona, M Karyotakis, Y Lees, J Poireau, V Prencipe, E Prudent, X Tisserand, V Garra Tico, J Grauges, E Lopez, L Palano, A Pappagallo, M Eigen, G Stugu, B Sun, L Abrams, G Battaglia, M Brown, D Cahn, R Jacobsen, R Kerth, LT Kolomensky, Y Kukartsev, G Lynch, G Measurements of B(B̄0→Λc+p̄) and B(B- →Λc+p̄π-) and studies of Λc+π- resonances |
| title | Measurements of B(B̄0→Λc+p̄) and B(B- →Λc+p̄π-) and studies of Λc+π- resonances |
| title_full | Measurements of B(B̄0→Λc+p̄) and B(B- →Λc+p̄π-) and studies of Λc+π- resonances |
| title_fullStr | Measurements of B(B̄0→Λc+p̄) and B(B- →Λc+p̄π-) and studies of Λc+π- resonances |
| title_full_unstemmed | Measurements of B(B̄0→Λc+p̄) and B(B- →Λc+p̄π-) and studies of Λc+π- resonances |
| title_short | Measurements of B(B̄0→Λc+p̄) and B(B- →Λc+p̄π-) and studies of Λc+π- resonances |
| title_sort | measurements of b b0 λc p and b b λc pπ and studies of λc π resonances |
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