Studies of the resonance structure in D0→ K∓π±π±π∓ decays

Collapse authors list.
Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Ali, S et al (show 90 more authors) , Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d’Argent, P, Arnau Romeu, J, Artamonov, A, Artuso, M, Aslanides, E, Atzeni, M, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Baryshnikov, F, Batozskaya, V, Battista, V, Bay, A, Beaucourt, L, Beddow, J, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Beliy, N, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Berninghoff, D, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, van Beuzekom, M, Bezshyiko, I, Bifani, S, Billoir, P, Birnkraut, A, Bizzeti, A, Bjørn, M, Blake, T, Blanc, F, Blusk, S, Bocci, V, Boettcher, T, Bondar, A, Bondar, N, Bordyuzhin, I, Borghi, S, Borisyak, M, Borsato, M, Bossu, F, Boubdir, M, Bowcock, TJV ORCID: 0000-0002-3505-6915, Bowen, E, Bozzi, C, Braun, S, Brodzicka, J, Brundu, D, Buchanan, E, Burr, C and Bursche, A (2018) Studies of the resonance structure in D0→ K∓π±π±π∓ decays European Physical Journal C, 78 (6). ISSN 1434-6044, 1434-6052

Access the full-text of this item by clicking on the Open Access link.

Abstract

Amplitude models are constructed to describe the resonance structure of D⁰→ K^-π⁺π⁺π^- and D⁰→ K⁺π^-π^-π⁺ decays using pp collision data collected at centre-of-mass energies of 7 and 8 TeV with the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb^{- 1}. The largest contributions to both decay amplitudes are found to come from axial resonances, with decay modes D⁰→ a<inf>1</inf>(1260) ⁺K^- and D⁰→ K<inf>1</inf>(1270 / 1400) ⁺π^- being prominent in D⁰→ K^-π⁺π⁺π^- and D⁰→ K⁺π^-π^-π⁺, respectively. Precise measurements of the lineshape parameters and couplings of the a<inf>1</inf>(1260) ⁺, K<inf>1</inf>(1270) ^- and K(1460) ^- resonances are made, and a quasi model-independent study of the K(1460) ^- resonance is performed. The coherence factor of the decays is calculated from the amplitude models to be RK3π=0.459±0.010(stat)±0.012(syst)±0.020(model), which is consistent with direct measurements. These models will be useful in future measurements of the unitary-triangle angle γ and studies of charm mixing and CP violation.

Item Type:	Article
Depositing User:	Symplectic Admin
Date Deposited:	13 Aug 2018 06:58
Last Modified:	22 Jan 2026 07:57
DOI:	10.1140/epjc/s10052-018-5758-4
Open Access URL:	https://arxiv.org/pdf/1712.08609v2.pdf
Related Websites:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3024850
Disclaimer:	The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate.