Measurement of branching fraction and direct CP asymmetry in charmless B+→K+K−π+ decays at Belle
We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K−π+. The results are based on a data sample that contains 772×106 BB¯ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. The measured inc...
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| description | We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K−π+. The results are based on a data sample that contains 772×106 BB¯ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38±0.40±0.35)×10−6 and −0.170±0.073±0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K− invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c2, which is consistent with the previous studies from BABAR and LHCb. In addition, strong evidence of a large direct CP asymmetry is found in the low K+K− invariant-mass region. |
| doi_str_mv | 10.1103/PhysRevD.96.031101 |
| format | Article |
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(Virginia Tech), Blacksburg, VA (United States)</creatorcontrib><description>We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K−π+. The results are based on a data sample that contains 772×106 BB¯ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38±0.40±0.35)×10−6 and −0.170±0.073±0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K− invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c2, which is consistent with the previous studies from BABAR and LHCb. In addition, strong evidence of a large direct CP asymmetry is found in the low K+K− invariant-mass region.</description><identifier>ISSN: 2470-0010</identifier><identifier>EISSN: 2470-0029</identifier><identifier>DOI: 10.1103/PhysRevD.96.031101</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>Asymmetry ; Invariants ; Large Hadron Collider ; Mass distribution ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</subject><ispartof>Physical review. 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The results are based on a data sample that contains 772×106 BB¯ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38±0.40±0.35)×10−6 and −0.170±0.073±0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K− invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c2, which is consistent with the previous studies from BABAR and LHCb. 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(Virginia Tech), Blacksburg, VA (United States)</creatorcontrib><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Physical review. D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hsu, C-L</au><aucorp>Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Measurement of branching fraction and direct CP asymmetry in charmless B+→K+K−π+ decays at Belle</atitle><jtitle>Physical review. D</jtitle><date>2017-08-31</date><risdate>2017</risdate><volume>96</volume><issue>3</issue><issn>2470-0010</issn><eissn>2470-0029</eissn><abstract>We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K−π+. The results are based on a data sample that contains 772×106 BB¯ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38±0.40±0.35)×10−6 and −0.170±0.073±0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K− invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c2, which is consistent with the previous studies from BABAR and LHCb. In addition, strong evidence of a large direct CP asymmetry is found in the low K+K− invariant-mass region.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevD.96.031101</doi><oa>free_for_read</oa></addata></record> |
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| source | American Physical Society Journals |
| subjects | Asymmetry Invariants Large Hadron Collider Mass distribution PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
| title | Measurement of branching fraction and direct CP asymmetry in charmless B+→K+K−π+ decays at Belle |
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