Measurement of the CKM angle γ using B ⁰ → DK ^*0 with D → K_S⁰ π ⁺ π ^- decays

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Kelsey, M, Kenyon, IR, Kenzie, M, Ketel, T, Khairullin, E, Khanji, B, Khurewathanakul, C, Kirn, T, Klaver, S, Klimaszewski, K, Kolpin, M, Komarov, I, Koopman, RF, Koppenburg, P, Kozeiha, M, Kravchuk, L, Kreplin, K, Kreps, M, Krokovny, P, Kruse, F, Krzemien, W, Kucewicz, W, Kucharczyk, M, Kudryavtsev, V, Kuonen, AK, Kurek, K, Kvaratskheliya, T, Lacarrere, D, Lafferty, G, Lai, A, Lambert, D, Lanfranchi, G, Langenbruch, C, Langhans, B, Latham, T, Lazzeroni, C, Le Gac, R, van Leerdam, J, Lees, J-P, Leflat, A, Lefran, J, Lefevre, R, Lemos Cid, E, Leroy, O, Lesiak, T, Leverington, B, Li, Y, Likhomanenko, T, Lindner, R, Linn, C, Lionetto, F, Liu, B, Liu, X, Loh, D, Longstaff, I, Lopes, JH, Lucchesi, D, Lucio Martinez, M, Luo, H, Lupato, A, Luppi, E, Lupton, O, Lusiani, A, Lyu, X, Machefert, F, Maciuc, F, Maev, O, Maguire, K, Malde, S, Malinin, A, Manca, G, Mancinelli, G, Manning, P, Mapelli, A, Maratas, J, Marchand, JF, Marconi, U, Marin Benito, C, Marino, P, Marks, J, Martellotti, G, Martin, M, Martinelli, M, Martinez Santos, D, Martinez Vidal, F, Martins Tostes, D, Massacrier, LM, Massafferri, A, Matev, R, Mathad, A, Mathe, Z, Matteuzzi, C, Mauri, A, Maurin, B, Mazurov, A, McCann, M, McCarthy, J, McNab, A, McNulty, R, Meadows, B, Meier, F, Meissner, M, Melnychuk, D, Merk, M, Michielin, E, Milanes, DA, Minard, M-N, Mitzel, DS, Molina Rodriguez, J, Monroy, IA, Monteil, S, Morandin, M, Morawski, P, Morda, A, Morello, MJ, Moron, J, Morris, AB, Mountain, R, Muheim, F, Mussini, M, Muster, B, Muller, D, Muller, J, Muller, K, Muller, V, Naik, P ORCID: 0000-0001-6977-2971, Nakada, T, Nandakumar, R, Nandi, A, Nasteva, I, Needham, M, Neri, N, Neubert, S, Neufeld, N, Neuner, M, Nguyen, AD, Nguyen-Mau, C, Niess, V, Nieswand, S, Niet, R, Nikitin, N, Nikodem, T, Novoselov, A, O'Hanlon, DP, Oblakowska-Mucha, A, Obraztsov, V, Ogilvy, S, Okhrimenko, O, Oldeman, R, Onderwater, CJG, Osorio Rodrigues, B, Otalora Goicochea, JM, Otto, A, Owen, P, Oyanguren, A, Palano, A, Palombo, F, Palutan, M, 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Wilson, FF, Wimberley, J, Wishahi, J, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wraight, K, Wright, S, Wyllie, K, Xie, Y, Xu, Z, Yang, Z, Yin, H, Yu, J, Yuan, X, Yushchenko, O, Zangoli, M, Zavertyaev, M, Zhang, L, Zhang, Y, Zhelezov, A, Zheng, Y, Zhokhov, A, Zhong, L, Zhukov, V and Zucchelli, S (2016) Measurement of the CKM angle γ using B ⁰ → DK ^*0 with D → K_S⁰ π ⁺ π ^- decays JOURNAL OF HIGH ENERGY PHYSICS, 2016 (8). 137-. ISSN 1029-8479, 1029-8479

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Abstract

A model-dependent amplitude analysis of the decay B⁰ → D(K<inf>S</inf> ⁰π⁺π⁻)K^∗0 is performed using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb⁻¹, recorded at √s=7 and 8 TeV by the LHCb experiment. The CP violation observables x<inf>±</inf> and y<inf>±</inf>, sensitive to the CKM angle γ, are measured to bex−=−0.15±0.14±0.03±0.01,y−=0.25±0.15±0.06±0.01,x+=0.05±0.24±0.04±0.01,y+=−0.65<inf>−0.23</inf> ^+0.24±0.08±0.01, where the first uncertainties are statistical, the second systematic and the third arise from the uncertainty on the D → K<inf>S</inf> ⁰π⁺π⁻ amplitude model. These are the most precise measurements of these observables. They correspond to γ = (80<inf>−22</inf> ⁺²¹)° and r<inf>B⁰ </inf>=0.39±0.13, where r<inf>B⁰ </inf> is the magnitude of the ratio of the suppressed and favoured B⁰ → DK⁺π⁻ decay amplitudes, in a Kπ mass region of ±50 MeV around the K^*(892)⁰ mass and for an absolute value of the cosine of the K^*0 decay angle larger than 0.4.[Figure not available: see fulltext.]

Item Type:	Article
Additional Information:	All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-007.html
Uncontrolled Keywords:	B physics, CKM angle gamma, CP violation, Flavor physics, Hadron-Hadron scattering (experiments)
Depositing User:	Symplectic Admin
Date Deposited:	06 Oct 2016 08:13
Last Modified:	16 Jun 2026 12:37
DOI:	10.1007/JHEP08(2016)137
Open Access URL:	https://arxiv.org/pdf/1605.01082v3.pdf
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3003624
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