Λ c semileptonic decays in a quark model
Hadronic form factors for semileptonic decay of the Λc are calculated in a nonrelativistic quark model. The full quark model wave functions are employed to numerically calculate the form factors to all relevant orders in (1/mc, 1/ms). The form factors obtained satisfy relationships expected from the...
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| Veröffentlicht in: | Physical review. D 2017-03, Vol.95 (5), p.053005, Article 053005 |
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| container_title | Physical review. D |
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| creator | Hussain, Md Mozammel Roberts, Winston |
| description | Hadronic form factors for semileptonic decay of the Λc are calculated in a nonrelativistic quark model. The full quark model wave functions are employed to numerically calculate the form factors to all relevant orders in (1/mc, 1/ms). The form factors obtained satisfy relationships expected from the heavy quark effective theory (HQET). The differential decay rates and branching fractions are calculated for transitions to the ground state and a number of excited states of Λ. The branching fraction of the semileptonic decay width to the total width of Λc has been calculated and compared with other theoretical estimates and experimental results. The branching fractions for Λc→Λ*l+νl→Σπl+νl and Λc→Λ*l+νl→NK¯l+νl are also calculated. Apart from decays to the ground state Λ(1115), it is found that decays through the Λ(1405) provide a significant portion of the branching fraction Λc→Xslνl. A new estimate for f=B(Λc+→Λl+νl)/B(Λc+→Xsl+νl) is obtained. |
| doi_str_mv | 10.1103/PhysRevD.95.053005 |
| format | Article |
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The full quark model wave functions are employed to numerically calculate the form factors to all relevant orders in (1/mc, 1/ms). The form factors obtained satisfy relationships expected from the heavy quark effective theory (HQET). The differential decay rates and branching fractions are calculated for transitions to the ground state and a number of excited states of Λ. The branching fraction of the semileptonic decay width to the total width of Λc has been calculated and compared with other theoretical estimates and experimental results. The branching fractions for Λc→Λ*l+νl→Σπl+νl and Λc→Λ*l+νl→NK¯l+νl are also calculated. Apart from decays to the ground state Λ(1115), it is found that decays through the Λ(1405) provide a significant portion of the branching fraction Λc→Xslνl. A new estimate for f=B(Λc+→Λl+νl)/B(Λc+→Xsl+νl) is obtained.</description><identifier>ISSN: 2470-0010</identifier><identifier>EISSN: 2470-0029</identifier><identifier>DOI: 10.1103/PhysRevD.95.053005</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>Decay rate ; Form factors ; Ground state ; Mathematical analysis ; Mathematical models ; Quark models ; Quarks ; Wave functions</subject><ispartof>Physical review. 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D</title><description>Hadronic form factors for semileptonic decay of the Λc are calculated in a nonrelativistic quark model. The full quark model wave functions are employed to numerically calculate the form factors to all relevant orders in (1/mc, 1/ms). The form factors obtained satisfy relationships expected from the heavy quark effective theory (HQET). The differential decay rates and branching fractions are calculated for transitions to the ground state and a number of excited states of Λ. The branching fraction of the semileptonic decay width to the total width of Λc has been calculated and compared with other theoretical estimates and experimental results. The branching fractions for Λc→Λ*l+νl→Σπl+νl and Λc→Λ*l+νl→NK¯l+νl are also calculated. Apart from decays to the ground state Λ(1115), it is found that decays through the Λ(1405) provide a significant portion of the branching fraction Λc→Xslνl. A new estimate for f=B(Λc+→Λl+νl)/B(Λc+→Xsl+νl) is obtained.</description><subject>Decay rate</subject><subject>Form factors</subject><subject>Ground state</subject><subject>Mathematical analysis</subject><subject>Mathematical models</subject><subject>Quark models</subject><subject>Quarks</subject><subject>Wave functions</subject><issn>2470-0010</issn><issn>2470-0029</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNo9kMFKAzEURYMoWGp_wFXQlYupL8kkmSylWhUKiug6pJk3dGo7aZOpMN_iP_lNjoy6undxuFwOIecMpoyBuH5edekFP26nRk5BCgB5REY815ABcHP83xmckklKa-irAqMZG5Grr0_qacJtvcFdG5ra0xK96xKtG-ro_uDiO92GEjdn5KRym4ST3xyTt_nd6-whWzzdP85uFpnnTLeZE-CkxryEoqicVIVcasGFcqWRnGsvjC-dWILXOUhVVaLgkuESgZd5wbAQY3Ix7IbU1jb5ukW_8qFp0LeWiVxpZXrocoB2MewPmFq7DofY9L8sZ9xIprXKe4oPlI8hpYiV3cV662JnGdgfdfZPnTXSDurEN46sYKU</recordid><startdate>20170301</startdate><enddate>20170301</enddate><creator>Hussain, Md Mozammel</creator><creator>Roberts, Winston</creator><general>American Physical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20170301</creationdate><title>Λ c semileptonic decays in a quark model</title><author>Hussain, Md Mozammel ; Roberts, Winston</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c217t-a30a57e4d088fa5685b73236ad95227c39cda3b0c74056ff38251ebe02d481e83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Decay rate</topic><topic>Form factors</topic><topic>Ground state</topic><topic>Mathematical analysis</topic><topic>Mathematical models</topic><topic>Quark models</topic><topic>Quarks</topic><topic>Wave functions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hussain, Md Mozammel</creatorcontrib><creatorcontrib>Roberts, Winston</creatorcontrib><collection>CrossRef</collection><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</collection><jtitle>Physical review. D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hussain, Md Mozammel</au><au>Roberts, Winston</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Λ c semileptonic decays in a quark model</atitle><jtitle>Physical review. D</jtitle><date>2017-03-01</date><risdate>2017</risdate><volume>95</volume><issue>5</issue><spage>053005</spage><pages>053005-</pages><artnum>053005</artnum><issn>2470-0010</issn><eissn>2470-0029</eissn><abstract>Hadronic form factors for semileptonic decay of the Λc are calculated in a nonrelativistic quark model. The full quark model wave functions are employed to numerically calculate the form factors to all relevant orders in (1/mc, 1/ms). The form factors obtained satisfy relationships expected from the heavy quark effective theory (HQET). The differential decay rates and branching fractions are calculated for transitions to the ground state and a number of excited states of Λ. The branching fraction of the semileptonic decay width to the total width of Λc has been calculated and compared with other theoretical estimates and experimental results. The branching fractions for Λc→Λ*l+νl→Σπl+νl and Λc→Λ*l+νl→NK¯l+νl are also calculated. Apart from decays to the ground state Λ(1115), it is found that decays through the Λ(1405) provide a significant portion of the branching fraction Λc→Xslνl. A new estimate for f=B(Λc+→Λl+νl)/B(Λc+→Xsl+νl) is obtained.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevD.95.053005</doi></addata></record> |
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| source | American Physical Society Journals |
| subjects | Decay rate Form factors Ground state Mathematical analysis Mathematical models Quark models Quarks Wave functions |
| title | Λ c semileptonic decays in a quark model |
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