<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math>meson decays to charmless meson pairs containing<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>η</mml:mi></mml:math>or<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>η</mml:mi><mml:mo>′</mml:mo></mml:math>mesons

Aubert, B.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Tico, J. Garra; Graugés, E.; Martinelli, M.; Palano, A.; Pappagallo, M.; Eigen, G.; Stugu, B.; Sun, Liang; Battaglia, M.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I.; Tackmann, K.; Tanabe, T.; Hawkes, C. M.; Soni, N.; Watson, A. T.; Koch, H.; Schroeder, T. Vazquez; Asgeirsson, D. J.; Fulsom, B. G.; Hearty, C.; Mattison, T. S.; McKenna, J. A.; Barrett, M.; Khan, Ahsan Raza; Randle-Conde, A.; Blinov, V.; Bukin, A. D.; Buzykaev, A. R.; Дружинин, В. П.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu; Bondioli, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A. J.; Lund, P.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.; Atmacan, H.; Gary, J. W.; Liu, F.; Long, O.; Vitug, G. M.; Yasin, Z.; Sharma, V.; Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Mazur, M. A.; Richman, J.; Beck, T. W.; Eisner, A. M.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martínez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Wang, L.; Winstrom, L.; Cheng, C. H.; Doll, D. A.; Echenard, B.; Fang, F.; Hitlin, D. G.; Narsky, I.; Ongmongkolkul, P.; Piatenko, T.; Porter, F. C.; Andreassen, R.; Mancinelli, G.; Meadows, B.; Mishra, K.; Sokoloff, M. D.; Bloom, P. C.; Ford, W. T.; Gaz, A.; Hirschauer, J. F.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Wagner, S. R.; Ayad, R.; Toki, W. H.; Wilson, R. J.; Feltresi, E.; Hauke, A.; Jasper, H.; Karbach, T. M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.; Kobel, M.; Nogowski, R.; Schubert, K. R.; Schwierz, R.; Bernard, D.; Latour, E.; Verderi, M.; Clark, P. J.; Playfer, S.; Watson, J. E.; Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.; Piemontese, L.; Santoro, V.; Baldini-Ferroli, R.; Calcaterra, A.; Sangro, R. de; Finocchiaro, G.; Pacetti, S.; 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.; Tosi, S.; Chaisanguanthum, K. S.; Morii, M.; Adametz, A.; Marks, J.; Schenk, S.; Uwer, U.; Bernlochner, F. U.; Klose, V.; Lacker, H. M.; Lueck, T.; Volk, A.; Bard, D. J.; Dauncey, P.; Tibbetts, M. J.; Behera, P. K.; Charles, M.; Mallik, U.; Cochran, J.; Crawley, H. B.; Liu, Dong; Eyges, V.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.; Gao, Y. Y.; Gritsan, A. V.; Guo, Z. J.; Arnaud, N.; Béquilleux, J.; DʼOrazio, A.; Davier, M.; Деркач, Д.; Costa, J. Firmino da; Grosdidier, G.; Diberder, F. Le; Lepeltier, V.; Lutz, A. M.; Malaescu, B.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.; Lange, D.; Wright, D. M.; Bingham, I.; Burke, J. P.; Chavez, C. A.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D.; Payne, D. J.; Touramanis, C.; Bevan, A. J.; Clarke, Christopher; Lodovico, F. Di; Sacco, R.; Sigamani, M.; Cowan, G.; Paramesvaran, S.; Wren, A. C.; Brown, D. N.; Davis, C. L.; Denig, A.; Fritsch, M.; Gradl, W.; Hafner, A.; Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Jackson, G.; Lafferty, G. D.; West, T. J.; Yi, J. I.; Anderson, J.; C., Chen,; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.; Dallapiccola, C.; Salvati, E.; Cowan, R.; Dujmić, D.; Fisher, P. H.; Henderson, S.; Sciolla, G.; Spitznagel, M.; Yamamoto, R. K.; Zhao, M. G.; Patel, P. M.; Robertson, S. H.; Schram, M.; Biassoni, P.; Lazzaro, A.; Lombardo, V.; Palombo, F.; Stracka, S.; Cremaldi, L.; Godang, R.; Kroeger, R.; Sonnek, P.; Summers, D. J.; Zhao, H. W.; Simard, M.; Taras, P.; Nicholson, H.; Nardo, G. De; Lista, L.; Monorchio, D.; Onorato, G.; Sciacca, C.; Raven, G.; Snoek, H. L.; Jessop, C.; Knoepfel, K. J.; LoSecco, J. M.; Wang, W. F.; Corwin, L. A.; Honscheid, K.; Kagan, H.; Kass, R.; Morris, J. P.; Rahimi, A. M.; Sekula, S. J.; Wong, Q. K.; Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J.; Lu, M.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.; Castelli, G.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.; Sanchez, P. del Amo; Ben-Haim, E.; Bonneaud, G. R.; Briand, H.; Chauveau, J.; Hamon, O.; Leruste, Ph; Marchiori, G.; Ocariz, J.; Pérez, A.; Prendki, J.; Sitt, S.; Gladney, L.; Biasini, M.; Manoni, E.; Angelini, C.; Batignani, G.; Bettarini, S.; Calderini, G.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Morganti, M.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J.; Pegna, D. Lopes; Lü, C.; Olsen, J.; Smith, A. J. S.; Telnov, A. V.; Anulli, F.; Baracchini, E.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Jackson, P. D.; Gioi, L. Li; Mazzoni, M. A.; Morganti, S.; Piredda, G.; Renga, F.; Voena, C.; Ebert, M.; Hartmann, T.; Schröder, H.; Waldi, R.; Adye, T.; Franek, B.; Olaiya, E.; Wilson, F. F.; Emery, S.; Estève, L.; Monchenault, G. Hamel de; Kozanecki, W.; Vasseur, G.; Yèche, Ch; Zito, M.; Allen, M. T.; Aston, D.; Bartoldus, R.; Benitez, J. F.; Cenci, R.; Coleman, J. P.; Convery, M. R.; Dingfelder, J.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Sevilla, M. Franco; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kamiński, J.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Lüth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Müller, D.; Neal, H. A.; Nelson, S.; O’Grady, C. P.; Ofte, I.; Perl, M.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va’vra, J.; Wagner, A. P.; Weaver, M.; West, C.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Young, C. C.; Ziegler, V.; Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.; Bellis, M.; Burchat, P. R.; Edwards, A. J.; Miyashita, T. S.; Ahmed, S.; Alam, M. S.; Ernst, J.; Pan, B.; Saeed, M. A.; Zain, S. B.; Soffer, A.; Spanier, S. M.; Wogsland, B. J.; Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.; Wray, B. C.; Drummond, B. W.; Izen, J. M.; Lou, X.; Bianchi, F.; Gamba, D.; Pelliccioni, M.; Bomben, M.; Bosisio, L.; Cartaro, C.; Ricca, G. Della; Lanceri, L.; Vitale, L.; Azzolini, V.; López-March, N.; Martínez-Vidal, F.; Milanes, D. A.; Oyanguren, A.; Albert, J.; Banerjee, S.; Bhuyan, B.; Choi, H. H. F.; Hamano, K.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R.; Gershon, T.; Harrison, P. F.; Ilić, J.; Latham, T.; Mohanty, G. B.; Puccio, E. M. T.; Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Pan, Y.; Prepost, R.; Vuosalo, C.; Wu, S. L.

doi:10.1103/physrevd.80.112002

Cited by 21 publications

(7 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…the efficiency for this decay chain to be 38%, consistent with the efficiencies found by Belle [57] and BaBar [58] in the decays B − → K − π 0 and B − → K − η(γγ), respectively. For completeness, we also calculate the sensitivity of the diphoton mode for higher masses, for which one is sensitive only to prompt axion decays and other final states constitute better probes.…”

Section: Axion Decays: Displaced and Promptsupporting

confidence: 86%

Heavy QCD Axion at Belle II: Displaced and Prompt Signals

Bertholet,

Chakraborty,

Loladze

et al. 2021

Preprint

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The QCD axion is a well-motivated addition to the standard model to solve the strong CP problem. If the axion acquires mass dominantly from a hidden sector, it can be as heavy as O(1) GeV, and the decay constant can be as low as O(100) GeV without running into the axion quality problem. We propose new search strategies for such heavy QCD axions at the Belle II experiment, where the axions are expected to be produced via B → Ka. We find that a subsequent decay a → 3π with a displaced vertex leads to a unique signal with essentially no background, and that a dedicated search can explore the range O(1-10) TeV of decay-constant values. We also show that a → γγ can cover a significant portion of currently unexplored region of 150 ma 500 MeV.

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Section: Axion Decays: Displaced and Promptsupporting

confidence: 86%

Heavy QCD Axion at Belle II: Displaced and Prompt Signals

Bertholet,

Chakraborty,

Loladze

et al. 2021

Preprint

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“…The results, reported in Table 3, are in good agreement with world averages [9]. The signal yield per 10 6 BB is similar to that reported by BaBar [5], and almost a factor two larger that that of Belle [4], partially thanks to the absence of selection on continuum suppression variable. The next step will be to use the future large data sample collected at Belle II for a full time dependent CP violation analysis.…”

Section: Systematics Uncertaintiessupporting

confidence: 84%

“…The B → η K decay was initially discovered by CLEO [2,3]. The current best measurements of branching ratio B were obtained by Belle [4] and BaBar [5], using 386 and 467 million BB pairs, respectively. The current Belle II integrated luminosity, collected at the Υ (4S ) resonance, does not allow, yet, to improve these measurements, but the rediscovery of these final states is an important benchmark to demonstrate the capability of the Belle II detector.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the branching fractions of $B\toη' K$ decays using 2019/2020 Belle II data

Collaboration¹,

Abudinén²,

Adachi³

et al. 2021

Preprint

Self Cite

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This note describes the rediscovery of B → η K decays in Belle II data, both in the charged and neutral final state: B 0 → η K 0 S and B ± → η K ± . The η is searched for in two decay modes: η → ηπ + π − with η → γγ, and η → ργ. The analysis uses data collected in 2019 and 2020 at the SuperKEKB asymmetric e + e − collider, with an integrated luminosity of 62.8 fb −1 , corresponding to 68.2 million of BB pairs produced. The signal yield is obtained via an unbinned maximum likelihood fit to signal sensitive variables, obtaining branching ratios:B B 0 → η K 0 = 59.9 +5.8 −5.5 (stat) ± 2.9 (syst) × 10 −6 which are consistent with world average.

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“…‡ PDG uses also a result from CLEO. −0.037 [841] 0.058 ± 0.008 ± 0.011 [1019] 0.057 ± 0.014 381 ρ 0 π + 0.18 +0.09 −0.17 0.18 ± 0.07 +0.05 −0.15 [841] 0.18 +0.09 −0.17 0.03 ± 0.17 ± 0.02 [797] 0.20 +0.37 −0.36 ± 0.04 [798] 0.06 ± 0.15 400 η ρ + 0.26 ± 0.17 0.26 ± 0.17 ± 0.02 [799] 0.26 ± 0.17 −0.01 ± 0.19 ± 0.02 [899] 0.21 ± 0.11 428 pΛγ 0.17 ± 0.17 0.17 ± 0.16 ± 0.05 [901] 0.17 ± 0.17 429 pΛπ 0 0.01 ± 0.17 0.01 ± 0.17 ± 0.04 [901] 0.01 ± 0.17 ). § PDG uses also a previous result from BABAR ( [955]).…”

Section: Charge Asymmetries In B-hadron Decaysmentioning

confidence: 99%

Averages of $b$-hadron, $c$-hadron, and $τ$-lepton properties as of summer 2016

Amhis,

Banerjee,

Ben-Haim

et al. 2016

Preprint

Self Cite

219

408

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This article reports world averages of measurements of b-hadron, c-hadron, and τ -lepton properties obtained by the Heavy Flavor Averaging Group using results available through summer 2016. For the averaging, common input parameters used in the various analyses are adjusted (rescaled) to common values, and known correlations are taken into account. The averages include branching fractions, lifetimes, neutral meson mixing parameters, CP violation parameters, parameters of semileptonic decays, and Cabbibo-Kobayashi-Maskawa matrix elements. 10 Summary 11 Acknowledgments References 3.2.5 B + c lifetime Early measurements of the B + c meson lifetime, from CDF [132, 133] and D0 [134], use the semileptonic decay mode B + c → J/ψ + ν and are based on a simultaneous fit to the mass and lifetime using the vertex formed with the leptons from the decay of the J/ψ and the third lepton. Correction factors to estimate the boost due to the missing neutrino are used. Correlated systematic errors include the impact of the uncertainty of the B + c p T spectrum on the correction factors, the level of feed-down from ψ(2S) decays, Monte Carlo modeling of the decay model varying from phase space to the ISGW model, and mass variations. With more statistics, CDF2 was able to perform the first B + c lifetime based on fully reconstructed B + c → J/ψπ + decays [135], which does not suffer from a missing neutrino. Recent measurements from LHCb, both with B + c → J/ψ µ + ν [136] and B + c → J/ψ π + [137] decays, achieve the highest level of precision. All the measurements are summarized in Table 11 and the world average, dominated by the LHCb measurements, is determined to be τ (B + c ) = 0.507 ± 0.009 ps . (46) 3.2.6 Λ 0 b and b-baryon lifetimes The first measurements of b-baryon lifetimes, performed at LEP, originate from two classes of partially reconstructed decays. In the first class, decays with an exclusively reconstructed Λ + c baryon and a lepton of opposite charge are used. These products are more likely to occur in Measurements of B −c decays to charmed hadrons are summarized in Sections 6.5.1 to 6.5.2. Since the absolute cross-section for B − c meson production in any production environment is currently not known, it is not possible to determine absolute branching fractions. Instead, results are presented either as ratios of branching fractions of different B − c decays, or are normalised to the branching fraction of the decay of a lighter B meson (usually B − ). In the latter case the measured quantity is the absolute or relative B − c branching fraction multiplied by the ratio of cross-sections (or, equivalently, production fractions) of the B − c and the lighter B meson. It should be noted that the ratio of cross-sections for different b hadron species can depend on production environment, and on the fiducial region accessed by each experiment. While this has been studied for certain b hadron species (see Sec. 3.1), there is currently little published data that would allow to investigate the effect for B − c mesons. Therefore, ...

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Bmeson decays to charmless meson pairs containingηorη′mesons

Cited by 21 publications

References 57 publications

Heavy QCD Axion at Belle II: Displaced and Prompt Signals

Heavy QCD Axion at Belle II: Displaced and Prompt Signals

Measurement of the branching fractions of $B\toη' K$ decays using 2019/2020 Belle II data

Averages of $b$-hadron, $c$-hadron, and $τ$-lepton properties as of summer 2016

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