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Ko, B. R.; Won, E.; Adachi, I.; Aihara, H.; Arinstein, K.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Bala, A.; Bhardwaj, V.; Bhuyan, B.; Bobrov, A.; Bondar, A.; Bożek, A.; Bračko, M.; Browder, T. E.; Červenkov, D.; Chen, A.; Cheon, B. G.; Chilikin, K.; Chistov, R.; Cho, I. S.; Cho, K.; Chobanova, V.; Choi, S. K.; Choi, Y.; Cinabro, D.; Dalseno, J.; Danilov, M.; Doležal, Z.; Drásal, Z.; Dutta, D.; Dutta, K.; Eidelman, S.; Epifanov, D.; Farhat, H.; Fast, J. E.; Ferber, T.; Gaur, V.; Ganguly, S.; Garmash, A.; Gillard, R.; Glattauer, R.; Goh, Y. M.; Golob, B.; Haba, J.; Hara, T.; Hayashii, H.; He, X.; Higuchi, T.; Hoshi, Y.; Hou, W.-S.; Hyun, H. J.; Iijima, T.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwashita, T.; Jaeglé, I.; Julius, T.; Kawasaki, T.; Kiesling, C.; Kim, D. Y.; Kim, J. B.; Kim, J. H.; Kim, M. J.; Kim, Y. J.; Klucar, J.; Kodyš, P.; Korpar, S.; Križan, P.; Krokovny, P.; Kuhr, T.; Kumita, T.; Kuzmin, A.; Kwon, Y.; Lange, J. S.; Lee, Soohyung; Li, J.; Li, Y.; Libby, J.; Liu, C.; Liu, Z. Q.; Lukin, P.; Matvienko, D.; Miyabayashi, K.; Miyata, H.; Mohanty, G. B.; Moll, A.; Mussa, R.; Nagasaka, Y.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Nayak, M.; Nedelkovska, E.; Nisar, N. K.; Nitoh, O.; Ogawa, S.; Okuno, S.; Pakhlova, G.; Park, C. W.; Park, H. K.; Pedlar, T. K.; Peng, Tao; Petrič, M.; Piilonen, L. E.; Ritter, M.; Röhrken, M.; Rostomyan, A.; Ryu, S.; Sahoo, H.; Sakai, Y.; Šantelj, L.; Sanuki, T.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Schwartz, A. J.; Seidl, R.; Seon, O.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shibata, T. A.; Shiu, J. G.; Shwartz, B.; Sibidanov, A.; Simon, F.; Singh, J. B.; Sohn, Y. S.; Sokolov, A.; Stanič, S.; Starič, M.; Steder, M.; Sumiyoshi, T.; Tamponi, U.; Tatishvili, G.; Teramoto, Y.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Vahsen, S.; Hulse, C. Van; Vanhoefer, P.; Varner, G.; Vinokurova, A.; Vorobyev, V.; Wagner, M. N.; Wang, C. H.; Wang, M. Z.; Wang, P.; Watanabe, Y.; Yamamoto, H.; Yamashita, Y.; Yashchenko, S.; Yook, Y.; Zhang, C. C.; Zhang, Z. P.; Zhilich, V.; Zupanc, A.

doi:10.1103/physrevlett.112.111801

Cited by 22 publications

(7 citation statements)

References 19 publications

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“…192 and 193, respectively. The D 0 → K + π − measurements used are from Belle [1052,1053], BABAR [1035], CDF [1054], and more recently LHCb [1037,1055]; earlier measurements have much less precision and are not used. The observables from D 0 → K 0 S π + π − decays are measured in two ways: assuming CP conservation (D 0 and D 0 decays combined), and allowing for CP violation (D 0 and D 0 decays fitted separately).…”

Section: Input Observablesmentioning

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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Section: Input Observablesmentioning

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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show abstract

“…All input measurements are listed in Tables 216-218. The observable R M = (x 2 + y 2 )/2 is calculated from D 0 → K + − ν decays [743][744][745][746] [748,749], BABAR [734], CDF [750], and LHCb [736]; earlier measurements have much less precision and are not used. The observables from D 0 → K 0 S π + π − decays are measured in two ways: assuming CP conservation (D 0 and D 0 decays are combined), and allowing for CP violation (D 0 and D 0 decays are fitted separately).…”

Section: Input Observablesmentioning

confidence: 99%

Averages of $b$-hadron, $c$-hadron, and $τ$-lepton properties as of summer 2014

Amhis,

Banerjee,

Ben-Haim

et al. 2014

Preprint

Self Cite

248

506

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This article reports world averages of measurements of b-hadron, c-hadron, and τlepton properties obtained by the Heavy Flavor Averaging Group (HFAG) using results available through summer 2014. 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 CKM matrix elements.

show abstract

“…192 and 193, respectively. The D 0 → K + π − measurements used are from Belle [1066,1067], BaBar [1049], CDF [1068], and more recently LHCb [1051,1069]; earlier measurements have much less precision and are not used. The observables from D 0 → K 0 S π + π − decays are measured in two ways: assuming CP conservation (D 0 andD 0 decays combined), and allowing for CP violation (D 0 andD 0 decays fitted separately).…”

Section: Input Observablesmentioning

confidence: 99%

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

et al. 2017

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This paper reports world averages of measurements of b-hadron, c-hadron, and τ -lepton properties obtained by the Heavy Flavour Averaging Group using results available before April 2021. In rare cases, significant results obtained several months later are also used. 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 Cabibbo-Kobayashi-Maskawa matrix elements. Selected world averages -continued from previous page. ∆Γ d /Γ d 0.001 ± 0.010 |q d /p d | 1.0010 ± 0.0008 ∆m s 17.765 ± 0.006 ps −1 ∆Γ s +0.084 ± 0.005 ps −1 |q s /p s | 1.0003 ± 0.0014 φ ccs s −0.049 ± 0.019 rad Unitarity-Triangle angle parameters sin2β ≡ sin2φ 1 0.699 ± 0.017 β ≡ φ 1 (22.2 ± 0.7) • −ηS φK 0 S 0.74 +0.11 −0.13 −ηS η K 0 0.63 ± 0.06 −ηS K 0 S K 0 S K 0 S 0.83 ± 0.17 φ s (φφ) −0.073 ± 0.115 ± 0.027 rad S B 0 s →K + K − , C B 0 s →K + K − (0.14 ± 0.03, 0.17 ± 0.03) −ηS J/ψ π 0 0.86 ± 0.14 −ηS D + D − 0.84 ± 0.12 −ηS J/ψ ρ 0 0.66 +0.13 −0.12 +0.09 −0.03(0.343 ± 0.002)% τ parameters, lepton universality, and |V us | g τ /g µ 1.0009 ± 0.0014 g τ /g e 1.0027 ± 0.0014 g µ /g e 1.0019 ± 0.0014* )0 s B ( * )0 s ) = (87.0 ± 1.7)% [34] measured as described in Ref. [35]. The proportions of the various production channels for non-strange B mesons have also been measured [22]. 4.3 b-hadron production fractions at high energy At high energy, all species of weakly decaying b hadrons may be produced, either directly or in strong and electromagnetic decays of excited b hadrons. Before 2010, it was assumed that the fractions of different species in unbiased samples of high-p T b-hadron jets where independent of whether they originated from Z decays, pp collisions at the Tevatron, or pp collisions at the LHC. This hypothesis was plausible under the condition Q 2 Λ 2 QCD , namely, that the square of the momentum transfer to the produced b quarks is large compared with the square of the hadronization energy scale. This hypothesis is correct in the limit p T → ∞, in which the production mechanism of a b hadron is completely described by the fragmentation of the b quark. For finite p T , however, there are interference effects of the production mechanism of the b quark and its hadronization. While formally suppressed by inverse powers of p T , these effects may be sizable, especially when the fragmentation probabilities are small as, e.g., in the case of b baryons. In fact, the available data show that the fractions depend on the kinematics of the produced b hadron. Both CDF and LHCb reported a p T dependence of the fractions, with the fraction of Λ 0 b baryons observed at low p T being enhanced with respect to that seen at LEP at higher p T . In our previous publication [1], we presented two sets of averages, one including only measurements performed at LEP, and another including only measurements performed ...

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Observation ofD0−D¯0Mixing in
B. R. Ko¹,
E. Won²,
I. Adachi³
et al.

Cited by 22 publications

References 19 publications

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

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

Averages of $b$-hadron, $c$-hadron, and $τ$-lepton properties as of summer 2014

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

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Observation ofD0−D¯0Mixing inB. R. Ko1, E. Won2, I. Adachi3 et al.

Cited by 22 publications

References 19 publications

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

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

Averages of $b$-hadron, $c$-hadron, and $τ$-lepton properties as of summer 2014

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

Contact Info

Product

Resources

About

Observation ofD0−D¯0Mixing in
B. R. Ko¹,
E. Won²,
I. Adachi³
et al.