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Lees, J. P.; Poireau, V.; Tisserand, V.; Tico, J. Garra; Graugés, E.; Martinelli, M.; Milanés, D. A.; Palano, A.; Pappagallo, M.; Eigen, G.; Stugu, B.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Koch, H.; Schroeder, T. Vazquez; Asgeirsson, D. J.; Hearty, C.; Mattison, T. S.; McKenna, J. A.; Khan, A. Ali; Blinov, V. E.; Buzykaev, A. R.; Дружинин, В. П.; Golubev, V. B.; Кравченко, Е. А.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu; Yushkov, A. N.; Bondioli, M.; Kirkby, D.; Lankford, A. J.; Mandelkern, M.; Stoker, D. P.; Atmacan, H.; Gary, J. W.; Liu, F.; Long, O.; Vitug, G. M.; Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Richman, J.; West, C.; Eisner, A. M.; Kroseberg, J.; Lockman, W. S.; Martínez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Cheng, C. H.; Doll, D. A.; Echenard, B.; Flood, K. T.; Hitlin, D. G.; Ongmongkolkul, P.; Porter, F. C.; Rakitin, A. Y.; Andreassen, R.; Dubrovin, M.; Huard, Z.; Meadows, B.; Sokoloff, M. D.; Sun, L.; Bloom, P. C.; Ford, W. T.; Gaz, A.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Wagner, S.R.; Ayad, R.; Toki, W. H.; Spaan, B.; Kobel, M.; Prudent, X.; Schubert, K. R.; Schwierz, R.; Bernard, D.; Verderi, M.; Clark, P. J.; Playfer, S.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cibinetto, G.; Fioravanti, E.; Garzia, I.; Luppi, E.; Munerato, M.; Negrini, M.; Piemontese, L.; Santoro, V.; Baldini-Ferroli, R.; Calcaterra, A.; Sangro, R. de; Finocchiaro, G.; Nicolaci, M.; Patterí, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.; Contri, R.; Guido, E.; Vetere, M. Lo; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Bhuyan, B.; Prasad, V.; Lee, C. L.; Morii, M.; Edwards, A. J.; Adametz, A.; Marks, J.; Uwer, U.; Bernlochner, F. U.; Ebert, M.; Lacker, H. M.; Lueck, T.; Dauncey, P. D.; Tibbetts, M. J.; Behera, P. K.; Mallik, U.; Chen, C.; Cochran, J.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.; Gritsan, A. V.; Guo, Z.; Arnaud, N.; Davier, M.; Grosdidier, G.; Diberder, F. Le; Lutz, A. M.; Malaescu, B.; Roudeau, P.; Schune, M. H.; Stocchi, A.; Wormser, G.; Lange, D.; Wright, D.; Bingham, I.; Chavez, C. A.; Coleman, J. P.; Fry, J. R.; Gabathuler, E.; Hutchcroft, D.; Payne, D. J.; Touramanis, C.; Bevan, A. J.; Lodovico, F. Di; Sacco, R.; Sigamani, M.; Cowan, G. A.; Davis, C. L.; Denig, A.; Fritsch, M.; Gradl, W.; Hafner, A.; Prencipe, E.; Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Jackson, G.; Lafferty, G.; Cenci, R.; Hamilton, B.; Jawahery, A.; Roberts, D. A.; Simi, G.; Dallapiccola, C.; Cowan, R.; Dujmić, D.; Sciolla, G.; Lindemann, D.; Patel, P. M.; Robertson, S. H.; Schram, M.; Biassoni, P.; Lazzaro, A.; Lombardo, V.; Neri, N.; Palombo, F.; Stracka, S.; Cremaldi, L.; Godang, R.; Kroeger, R.; Sonnek, P.; Summers, D. J.; Nguyen, X.; Taras, P.; Nardo, G. De; Monorchio, D.; Onorato, G.; Sciacca, C.; Raven, G.; Snoek, H. L.; Jessop, C.; Knoepfel, K. J.; LoSecco, J. M.; Wang, W. F.; Honscheid, K.; Kass, R.; Brau, J.; Frey, R.; Sinev, N. B.; Strom, D.; Torrence, E.; Feltresi, E.; Gagliardi, N.; Margoni, M.; Moran, D.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Ben-Haim, E.; Bomben, M.; Bonneaud, G. R.; Briand, H.; Calderini, G.; Chauveau, J.; Hamon, O.; Leruste, Ph.; Marchiori, G.; Ocariz, J.; Sitt, S.; Biasini, M.; Manoni, E.; Pacetti, S.; Rossi, A.; Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Oberhof, B.; Paoloni, E.; Pérez, Antonio Fontán; Rizzo, G.; Walsh, J.; Pegna, D. Lopes; Lü, C.; Olsen, J.; Smith, A.; Telnov, A. V.; Anulli, F.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Gioi, L. Li; Mazzoni, M. A.; Piredda, G.; Bünger, C.; Grünberg, O.; Hartmann, T.; Leddig, T.; Schröder, H.; Waldi, R.; Adye, T.; Olaiya, E.; Wilson, F. F.; Emery, S.; Alverson, G.; Vasseur, G.; Yéche, C.; Aston, D.; Bard, D. J.; Bartoldus, R.; Cartaro, C.; Convery, M. R.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Sevilla, M. Franco; Fulsom, B. G.; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D.; Lewis, P.; Li, S.; Lindquist, B.; Luitz, S.; Lüth, V.; Lynch, H. L.; MacFarlane, D. B.; Muller, D. R.; Neal, H.; Nelson, S.; Ofte, I.; Perl, M.; Pulliam, T.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Snyder, A.; Su, D.; Sullivan, M. K.; Va’vra, J.; Wagner, A. P.; Weaver, M.; Wisniewski, William J.; Wittgen, M.; Wright, D.; Wulsin, H. W.; Yarritu, A. K.; Young, C. C.; Ziegler, V.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.; Randle-Conde, A.; Sekula, S. J.; Bellis, M.; Benitez, J. F.; Burchat, P. R.; Miyashita, T. S.; Alam, M. S.; Ernst, J.; Gorodeisky, R.; Guttman, N.; Peimer, D. R.; Soffer, A.; Lund, P.; Spanier, S. M.; Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.; Wray, B. C.; Izen, J. M.; Lou, X.; Bianchi, F.; Gamba, D.; Lanceri, L.; Vitale, L.; Martínez-Vidal, F.; Oyanguren, A.; Ahmed, H.; Albert, J.; Banerjee, S.; Choi, H. H. F.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Lindsay, C.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.; Tasneem, N.; Gershon, T.; Harrison, P. F.; Latham, T.; Puccio, E. M. T.; Band, H. R.; Dasu, S.; Pan, Y.; Prepost, R.; Wu, S. L.

doi:10.1103/physrevd.87.039901

Cited by 13 publications

(6 citation statements)

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“…it is important to test other values originated from already measured colour-suppressed B-meson decays, as non factorizing final state interactions can modify the decay dynamics [27]. Among them, the decay B 0 → DK * 0 plays such a role for which LHCb obtains r B = 0.22 +0.17 −0.27 [21], confirmed by a more recent and accurate computation: r B = 0.265±0.023 [28].…”

Section: B Parametersmentioning

confidence: 95%

Study of CKM angle $γ$ sensitivity using flavor untagged $B^0_s\rightarrow \tilde{D}^{(*)0}ϕ$ decays

Ao,

Decamp,

Qian

et al. 2020

Preprint

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A sensitivity study for the measurement of the CKM angle γ from B 0 s → D( * )0 φ decays is performed using D meson reconstructed in the quasi flavour-specific modes Kπ, K3π, Kππ 0 , and CP -eigenstate modes KK and ππ, where the notation D0 corresponds to a D 0 or a D 0 meson. The LHCb experiment is taken as a use case. With realistic assumptions on the detector performance, a statistical uncertainty of about 9 − 21 • can be achieved with the pp collision data collected by the LHCb experiment from 2011 to 2018. The accuracy depends on the strong parameters r ( * ) B and δ ( * ) B , describing, together with γ, the interference between the leading amplitudes of the B 0 s → D( * )0 φ decays.

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Section: B Parametersmentioning

confidence: 95%

Study of CKM angle $γ$ sensitivity using flavor untagged $B^0_s\rightarrow \tilde{D}^{(*)0}ϕ$ decays

Ao,

Decamp,

Qian

et al. 2020

Preprint

Self Cite

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“…The procedure employs the sPlot technique [110], where an extended unbinned maximum-likelihood fit to the two-dimensional distribution is performed. The signal is described using a modified Novosibirsk function [111] and the background is modelled by a product of an exponential function and a positive polynomial function [87]. Each candidate is assigned a positive weight for being signal-like or a negative weight for being background-like, with the masses of the two D 0 candidates as the discriminating variables.…”

Section: Non-d 0 Background Subtractionmentioning

confidence: 99%

“…• Imperfect knowledge of detector resolution model: to estimate the associated systematic uncertainty alternative resolution functions are studied, namely a symmetric variant of an Apollonios function [112]; a modified Gaussian function with symmetric power-law tails on both sides of the distribution [113,114]; a generalised symmetric Student's t-distribution [115,116]; a symmetric Johnson's S U distribution [117,118]; and a modified Novosibirsk function [111].…”

Section: Systematic Uncertaintiesmentioning

confidence: 99%

Observation of an exotic narrow doubly charmed tetraquark

Aaij¹,

Machado²,

Bradley³

et al. 2021

Preprint

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Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. The observation of a new type of hadronic state, a doubly charmed tetraquark containing two charm quarks, an anti-u and an anti-d quark, is reported using data collected by the LHCb experiment at the Large Hadron Collider. This exotic state with a mass of about 3875 MeV/c 2 manifests itself as a narrow peak in the mass spectrum of D0D0π + mesons just below the D∗+D0 mass threshold. The near-threshold mass together with a strikingly narrow width reveals the resonance nature of the state.

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“…• Imperfect knowledge of the detector resolution model. To estimate the associated systematic uncertainty a set of alternative resolution functions is tested: a symmetric variant of an Apollonios function [109], a modified Gaussian function with symmetric power-law tails on both sides of the distribution [110,111], a generalised symmetric Student's t-distribution [112,113], a symmetric Johnson's S U distribution [114,115], and a modified Novosibirsk function [116].…”

Section: Systematic Uncertaintiesmentioning

confidence: 99%

“…• a component corresponding to genuine D 1 D 2 pairs and described as a product of two signal functions, each parameterised with a modified Novosibirsk function [116];…”

Section: Non-d Background Subtractionmentioning

confidence: 99%

Study of the doubly charmed tetraquark $T_{cc}^+$

Aaij¹,

Abdelmotteleb²,

Beteta³

et al. 2021

Preprint

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An exotic narrow state in the D0D0π + mass spectrum just below the D∗+D0 mass threshold is studied using a data set corresponding to an integrated luminosity of 9 fb−1 acquired with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The state is consistent with the ground isoscalar T+ cc tetraquark with a quark content of ccud and spin-parity quantum numbers JP = 1+. Study of the DD mass spectra disfavours interpretation of the resonance as the isovector state. The decay structure via intermediate off-shell D∗+ mesons is confirmed by the D0π + mass distribution. The mass of the resonance and its coupling to the D∗D system are analysed. Resonance parameters including the pole position, scattering length, effective range and compositeness are measured to reveal important information about the nature of the T+ cc state. In addition, an unexpected dependence of the production rate on track multiplicity is observed.

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Erratum: Branching fraction measurements of the color-suppressed decaysB¯0toD(*)0<

Abstract: Erratum: Branching fraction measurements of the color-suppressed decays B 0 to D ðÃÞ0 0 , D ðÃÞ0 , D ðÃÞ0 !, and D ðÃÞ0 0 and measurement of the polarization in the decay Phys. Rev. D 84, 112007 (2011)]

Cited by 13 publications

References 0 publications

Study of CKM angle $γ$ sensitivity using flavor untagged $B^0_s\rightarrow \tilde{D}^{(*)0}ϕ$ decays

Study of CKM angle $γ$ sensitivity using flavor untagged $B^0_s\rightarrow \tilde{D}^{(*)0}ϕ$ decays

Observation of an exotic narrow doubly charmed tetraquark

Study of the doubly charmed tetraquark $T_{cc}^+$

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