A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay Λ0 b → Λ+c μ- νμ is reported, using data corresponding to 3 fb-1collected with the LHCb detector in proton-proton collisions. The Λ+c μ- νμ anything final states are reconstructed through the detection of a muon and a Λ+c baryon decaying into pK-π+, and the decays Λ0 b → Λ+c π+π-μ- νμ are used to determine contributions from Λ0 b → Λ0c μ- νμ decays. The measured dependence of the differential decay rate upon the squared four-momentum transfer between the heavy baryons, q2, is compared with expectations from heavy-quark effective theory and from unquenched lattice QCD predictions.

Measurement of the shape of the Λ0b → Λ+ c μ-νμ differential decay rate / Aaij, R., Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 96:11(2017). [10.1103/PhysRevD.96.112005]

Measurement of the shape of the Λ0b → Λ+ c μ-νμ differential decay rate

Capriotti L.;Casse G.;Sarti A.;Sciubba A.;
2017

Abstract

A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay Λ0 b → Λ+c μ- νμ is reported, using data corresponding to 3 fb-1collected with the LHCb detector in proton-proton collisions. The Λ+c μ- νμ anything final states are reconstructed through the detection of a muon and a Λ+c baryon decaying into pK-π+, and the decays Λ0 b → Λ+c π+π-μ- νμ are used to determine contributions from Λ0 b → Λ0c μ- νμ decays. The measured dependence of the differential decay rate upon the squared four-momentum transfer between the heavy baryons, q2, is compared with expectations from heavy-quark effective theory and from unquenched lattice QCD predictions.
2017
Charm physics; CP violation; Flavor physics; Hadron-Hadron Scattering; Nuclear and High Energy Physics
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the shape of the Λ0b → Λ+ c μ-νμ differential decay rate / Aaij, R., Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 96:11(2017). [10.1103/PhysRevD.96.112005]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1310988
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