Measurement of <i>CP</i> asymmetries in <i>D</i><SUP>+</SUP>_(<i>s</i>) → ηπ<SUP>+</SUP> and <i>D</i><SUP>+</SUP>_(<i>s</i>) → η′π<SUP>+</SUP> decays

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Aaij, R, Abdelmotteleb, ASW, Beteta, C Abellan, Abudinen, F, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Agapopoulou, C, Aidala, CA et al (show 1001 more authors) , Aiola, S, Ajaltouni, Z, Akar, S, Akiba, K, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Aliouche, Z, Cartelle, P Alvarez, Amato, S, Amey, JL, Amhis, Y, An, L, Anderlini, L, Andersson, M, Andreianov, A, Andreotti, M, Ao, D, Archilli, F, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Bachmayer, M, Back, JJ, Bailly-reyre, A, Baladron Rodriguez, P, Balagura, V, Baldini, W, Baptista de Souza Leite, J, Barbetti, M, Barlow, RJ, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Basels, JM, Bassi, G, Batsukh, B, Battig, A, Bay, A, Beck, A, Becker, M, Bedeschi, F, Bediaga, IB, Beiter, A, Belavin, V, Belin, S, Bellee, V, Belous, K, Belov, I, Belyaev, I, Bencivenni, G, Ben-Haim, E, Berezhnoy, A, Bernet, R, Berninghoff, D, Bernstein, HC, Bertella, C, Bertolin, A, 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V, Celani, S, Cerasoli, J, Cervenkov, D, Chadwick, AJ, Chapman, MG, Charles, M, Charpentier, Ph, Barajas, CA Chavez, Chefdeville, M, Chen, C, Chen, S, Chernov, A, Chobanova, V, Cholak, S, Chrzaszcz, M, Chubykin, A, Chulikov, V, Ciambrone, P, Cicala, MF, Cid Vidal, X, Ciezarek, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Cobbledick, JL, Coco, V, Coelho, JAB, Cogan, J, Cogneras, E, Cojocariu, L, Collins, P, Colombo, T, Congedo, L, Contu, A, Cooke, N, Coombs, G, Corredoira, I, Corti, G, Sobral, CM Costa, Couturier, B, Craik, DC, Crkovska, J, Cruz Torres, M, Currie, R, Da Silva, CL, Dadabaev, S, Dai, L, Dall'Occo, E, Dalseno, J, D'Ambrosio, C, Danilina, A, d'Argent, P, Davies, JE, Davis, A, Francisco, O De Aguiar, de Boer, J, De Bruyn, K, De Capua, S, De Cian, M, De Freitas Carneiro Da Graca, U, De Lucia, E, De Miranda, JM, De Paula, L, De Serio, M, De Simone, D, De Simone, P, De Vellis, F, de Vries, JA, Dean, CT, Debernardis, F, Decamp, D, Dedu, V, Del Buono, L, Delaney, B, 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EB, Hansmann-Menzemer, S, Harnew, N, Harrison, T, Hasse, C, Hatch, M, He, J, Hecker, M, Heijhoff, K, Heinicke, K, Henderson, RDL, Hennequin, AM, Hennessy, K ORCID: 0000-0002-1529-8087, Henry, L, Heuel, J, Hicheur, A, Hill, D, Hilton, M, Hollitt, SE, Hou, R, Hou, Y, Hu, J, Hu, J, Hu, W, Hu, X, Huang, W, Huang, X, Hulsbergen, W, Hunter, RJ, Hushchyn, M, Hutchcroft, D ORCID: 0000-0002-4174-6509, Hynds, D, Ibis, P, Idzik, M, Ilin, D, Ilten, P, Inglessi, A, Ishteev, A, Ivshin, K, Jacobsson, R, Jage, H, Jakobsen, S, Jans, E, Jashal, BK, Jawahery, A, Jevtic, V, Jiang, X, John, M, Johnson, D, Jones, CR, Jones, TP, Jost, B, Jurik, N, Kandybei, S, Kang, Y, Karacson, M, Karpenkov, D, Karpov, M, Kautz, JW, Keizer, F, Keller, DM, Kenzie, M, Ketel, T, Khanji, B, Kharisova, A, Kholodenko, S, Kirn, T, Kirsebom, VS, Kitouni, O, Klaver, S, Kleijne, N, Klimaszewski, K, Kmiec, MR, Koliiev, S, Kondybayeva, A, Konoplyannikov, A, Kopciewicz, P, Kopecna, R, Koppenburg, P, Korolev, M, Kostiuk, I, Kot, O, Kotriakhova, S, Kozachuk, A, Kravchenko, P, Kravchuk, L, Krawczyk, RD, Kreps, M, Kretzschmar, S, Krokovny, P, Krupa, W, Krzemien, W, Kubat, J, Kucewicz, W, Kucharczyk, M, Kudryavtsev, V, Kuindersma, HS, Kunde, GJ, Kvaratskheliya, T, Lacarrere, D, Lafferty, G, Lai, A, Lampis, A, Lancierini, D, Lane, JJ, Lane, R, Lanfranchi, G, Langenbruch, C, Langer, J, Lantwin, O, Latham, T, Lazzari, F, Lazzaroni, M, Le Gac, R, Lee, SH, Lefevre, R, Leflat, A, Legotin, S, Leroy, O, Lesiak, T, Leverington, B, Li, H, Li, P, Li, S, Li, Y, Li, Z, Liang, X, Lin, T, Lindner, R, Lisovskyi, V, Litvinov, R, Liu, G, Liu, H, Liu, Q, Liu, S, Lobo Salvia, A, Loi, A, Lollini, R, Lomba Castro, J, Longstaff, I, Lopes, JH, Lopez Solino, S, Lovell, GH, Lu, Y, Lucarelli, C, Lucchesi, D, Luchuk, S, Martinez, M Lucio, Lukashenko, V, Luo, Y, Lupato, A, Luppi, E, Lupton, O, Lusiani, A, Lyu, X-R, Ma, L, Ma, R, Maccolini, S, Machefert, F, Maciuc, F, Macko, V, Mackowiak, P, Maddrell-Mander, S, Mohan, LR Madhan, Maevskiy, A, Maisuzenko, D, Majewski, MW, Malczewski, JJ, Malde, S, Malecki, B, Malinin, A, Maltsev, T, Malygina, H, Manca, G, Mancinelli, G, Manuzzi, D, Manzari, CA, Marangotto, D, Maratas, JM, Marchand, JF, Marconi, U, Mariani, S, Benito, C Marin, Marinangeli, M, Marks, J, Marshall, AM, Marshall, PJ, Martelli, G, Martellotti, G, Martinazzoli, L, Martinelli, M, Martinez Santos, D, Martinez Vidal, F, Massafferri, A, Materok, M, Matev, R, Mathad, A, Matiunin, V, Matteuzzi, C, Mattioli, KR, Mauri, A, Maurice, E, Mauricio, J, Mazurek, M, McCann, M, Mcconnell, L, McGrath, TH, McHugh, NT, McNab, A, McNulty, R, Mead, JV, Meadows, B, Meier, G, Melnychuk, D, Meloni, S, Merk, M, Merli, A, Meyer Garcia, L, Mikhasenko, M, Milanes, DA, Millard, E, Milovanovic, M, Minard, M-N, Minotti, A, Mitchell, SE, Mitreska, B, Mitzel, DS, Moedden, A, Mohammed, RA, Moise, RD, Mokhnenko, S, Mombacher, T, Monroy, IA, Monteil, S, Morandin, M, Morello, G, Morello, MJ, Moron, J, Morris, AB, Morris, AG, Mountain, R, Mu, H, 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ηπ<SUP>+</SUP> and <i>D</i><SUP>+</SUP>_(<i>s</i>) → η′π<SUP>+</SUP> decays. JOURNAL OF HIGH ENERGY PHYSICS, 2023 (4). 81-.

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Abstract

<jats:title>A<jats:sc>bstract</jats:sc> </jats:title><jats:p>Searches for <jats:italic>CP</jats:italic> violation in the decays <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {D}_{(s)}^{+}\to \eta {\pi}^{+} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mfenced> <mml:mi>s</mml:mi> </mml:mfenced> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>η</mml:mi> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula> and <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {D}_{(s)}^{+}\to {\eta}^{\prime }{\pi}^{+} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mfenced> <mml:mi>s</mml:mi> </mml:mfenced> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>η</mml:mi> <mml:mo>′</mml:mo> </mml:msup> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula> are performed using <jats:italic>pp</jats:italic> collision data corresponding to 6 fb<jats:sup><jats:italic>−</jats:italic>1</jats:sup> of integrated luminosity collected by the LHCb experiment. The calibration channels <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {D}_{(s)}^{+}\to \phi {\pi}^{+} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mfenced> <mml:mi>s</mml:mi> </mml:mfenced> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>ϕ</mml:mi> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula> are used to remove production and detection asymmetries. The resulting <jats:italic>CP</jats:italic>-violating asymmetries are<jats:disp-formula><jats:alternatives><jats:tex-math>$$ {\displaystyle \begin{array}{l}{\mathcal{A}}^{CP}=\left({D}^{+}\to \eta {\pi}^{+}\right)=\left(0.34\pm 0.66\pm 0.16\pm 0.05\right)\%,\\ {}{\mathcal{A}}^{CP}=\left({D}_s^{+}\to \eta {\pi}^{+}\right)=\left(0.32\pm 0.51\pm 0.12\right)\%,\\ {}\begin{array}{l}{\mathcal{A}}^{CP}=\left({D}^{+}\to {\eta}^{\prime }{\pi}^{+}\right)=\left(0.49\pm 0.18\pm 0.06\pm 0.05\right)\%,\\ {}{\mathcal{A}}^{CP}=\left({D}_s^{+}\to {\eta}^{\prime }{\pi}^{+}\right)=\left(0.01\pm 0.12\pm 0.08\right)\%,\end{array}\end{array}} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mtable> <mml:mtr> <mml:mtd> <mml:msup> <mml:mi>A</mml:mi> <mml:mi>CP</mml:mi> </mml:msup> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:msup> <mml:mi>D</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:mi>η</mml:mi> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:mrow> </mml:mfenced> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:mn>0.34</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.66</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.16</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.05</mml:mn> </mml:mrow> </mml:mfenced> <mml:mo>%</mml:mo> <mml:mo>,</mml:mo> </mml:mtd> </mml:mtr> <mml:mtr> <mml:mtd> <mml:msup> <mml:mi>A</mml:mi> <mml:mi>CP</mml:mi> </mml:msup> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>η</mml:mi> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:mrow> </mml:mfenced> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:mn>0.32</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.51</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.12</mml:mn> </mml:mrow> </mml:mfenced> <mml:mo>%</mml:mo> <mml:mo>,</mml:mo> </mml:mtd> </mml:mtr> <mml:mtr> <mml:mtd> <mml:mtable> <mml:mtr> <mml:mtd> <mml:msup> <mml:mi>A</mml:mi> <mml:mi>CP</mml:mi> </mml:msup> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:msup> <mml:mi>D</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>η</mml:mi> <mml:mo>′</mml:mo> </mml:msup> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:mrow> </mml:mfenced> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:mn>0.49</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.18</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.06</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.05</mml:mn> </mml:mrow> </mml:mfenced> <mml:mo>%</mml:mo> <mml:mo>,</mml:mo> </mml:mtd> </mml:mtr> <mml:mtr> <mml:mtd> <mml:msup> <mml:mi>A</mml:mi> <mml:mi>CP</mml:mi> </mml:msup> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>η</mml:mi> <mml:mo>′</mml:mo> </mml:msup> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:mrow> </mml:mfenced> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:mn>0.01</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.12</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.08</mml:mn> </mml:mrow> </mml:mfenced> <mml:mo>%</mml:mo> <mml:mo>,</mml:mo> </mml:mtd> </mml:mtr> </mml:mtable> </mml:mtd> </mml:mtr> </mml:mtable> </mml:math></jats:alternatives></jats:disp-formula></jats:p><jats:p>where the first uncertainty is statistical, the second is systematic and the third, relevant for the <jats:italic>D</jats:italic><jats:sup>+</jats:sup> channels, is due to the uncertainty on <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {\mathcal{A}}^{CP}=\left({D}^{+}\to \phi {\pi}^{+}\right) $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>A</mml:mi> <mml:mi>CP</mml:mi> </mml:msup> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:msup> <mml:mi>D</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:mi>ϕ</mml:mi> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:mrow> </mml:mfenced> </mml:math></jats:alternatives></jats:inline-formula>. These measurements, currently the most precise for three of the four channels considered, are consistent with the absence of <jats:italic>CP</jats:italic> violation. A combination of these results with previous LHCb measurements is presented.</jats:p>

Item Type:	Article
Uncontrolled Keywords:	Charm Physics, CP Violation, Flavour Physics, Hadron-Hadron Scattering
Divisions:	Faculty of Science and Engineering > School of Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	10 Jul 2023 14:07
Last Modified:	15 Mar 2024 01:49
DOI:	10.1007/JHEP04(2023)081
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3171598