Determination of |V| using the semileptonic decay →De

Abe, K.; R, Abe; Abe, T.; Adachi, I.; Ahn, Byoung Sup; Aihara, H.; Akatsu, M.; Asano, Y.; Aso, T.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Ban, Y.; Banaś, E.; Behari, S.; Behera, P. K.; Bondar, A.; Bożek, A.; Browder, T. E.; Casey, B. C.K.; Chang, P.; Chào, Y.; Cheon, B. G.; Chistov, R.; Choi, Soo Kyung; Choi, Y.; Dong, L. Y.; Drutskoy, A.; Eidelman, S.; Eiges, V.; Everton, C.W.; Fang, F.; Fujii, Hirofumi; Fukunaga, C.; Fukushima, M.; Gabyshev, N.; Garmash, A.; Gershon, T.; Gordon, A.; Guo, R.; Haba, J.; Hamasaki, Hiroshi; Hanagaki, K.; Handa, F.; Hara, K.; Hara, T.; Hastings, N. C.; Hayashii, H.; Hazumi, M.; Heenan, E. M.; Higuchi, I.; Higuchi, T.; Hojo, T.; Hokuue, T.; Hoshi, Y.; Hoshina, K.; Hou, S.; Hou, W.-S.; Hsu, S.-C.; Huang, H.-C.; Igarashi, Y.; Iijima, T.; Ikeda, H.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, Hideo; Iwasaki, Y.; Jackson, D.; Jałocha, P.; Jang, H. K.; Kang, J. H.; Kang, J. S.; Kapusta, P.; Katayama, N.; Kawai, Hiroyuki; Kawamura, N.; Kawasaki, T.; Kichimi, H.; Kim, D.W.; Kim, Heejong; Kim, H.J.; Kim, H.O.; Kim, Hyun Woo; Kim, S.K.; Kim, T.H.; Kinoshita, K.; Konishi, H.; Korpar, S.; Križan, P.; Krokovny, P.; Kulasiri, R.; Kumar, Sanjeev; Kuzmin, A.; Kwon, Y. J.; Lange, J.; Leder, G.; Lee, S.H.; Liventsev, D.; Lu, R.-S.; MacNaughton, J.; Matsubara, T.; Matsumoto, S.; Matsumoto, T.; Mikami, Y.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Moloney, G. R.; Mori, Shigeki; Mori, T.; Murakami, Akira; Nagamine, T.; Nagasaka, Y.; Nagashima, Y.; Nakadaira, T.; Nakano, E.; Nakao, M.; Nam, J. W.; Natkaniec, Z.; Neichi, K.; Nishida, S.; Nitoh, O.; Noguchi, S.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okabe, T.; Okuno, S.; Olsen, S. L.; Ostrowicz, W.; Ozaki, H.; Pakhlov, P.; Pałka, H.; Park, C.S.; Park, C.W.; Park, H.; Park, K.S.; Peak, L. S.; Perroud, J. P.; Peters, M.; Piilonen, L. E.; Prebys, E.; Rodriguez, Jorge Luis; Root, N.; Różańska, M.; Ryuko, J.; Sagawa, H.; Sakai, Y.; Sakamoto, H.; Satapathy, M.; Satpathy, A.; Schrenk, S.; Semenov, S.; Senyo, K.; Sevior, M. E.; Shibuya, H.; Shwartz, B.; Singh, Jagbir; Stanič, S.; Sugiyama, A.; Sumisawa, K.; Sumiyoshi, T.; Suzuki, S.; Swain, S. K.; Takahashi, T.; Takasaki, F.; Takita, M.; Tamai, K.; Tamura, N.; Tanaka, J.; Tanaka, M.; Tanaka, Yosuke; Taylor, G.N.; Teramoto, Y.; Tomoto, M.; Tomura, T.; Tovey, S. N.; Trabelsi, K.; Tsuboyama, T.; Tsukamoto, T.; Uehara, S.; Ueno, K.; Unno, Y.; Uno, S.; Ushiroda, Y.; Vahsen, S. E.; Varvell, K. E.; Wang, C.C.; Wang, C.H.; Wang, J.G.; Wang, M.-Z.; Watanabe, Y.; Won, E.; Yabsley, B. D.; Yamada, Y.; Yamaga, M.; Yamaguchi, Akinobu; Yamamoto, H.; Yamashita, Y.; Yamauchi, M.; Yanaka, S.; Yashima, J.; Yokoyama, M.; Yoshida, K.; Yuan, Y.; Yusa, Y.; Zhang, C.C.; Zhang, J.; Zhao, H. W.; Zheng, Y.; Zhilich, V.; Žontar, D.

doi:10.1016/s0370-2693(01)01476-9

Cited by 36 publications

(13 citation statements)

References 30 publications

Supporting

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“…The CLEO data is shown as data points. The semileptonic rate was taken from the BELLE fit [23] to a form factor using a unitarity constrained parametrization [24]. The available data is in good agreement with the factorization prediction.…”

Section: Factorization Forb → D * Xmentioning

confidence: 99%

Testing factorization inB→D(*)Xdecays

et al. 2003

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In QCD the amplitude forB 0 → D ( * )+ π − factorizes in the large N c limit or in the large energy limit Q ≫ Λ QCD where Q = {m b , m c , m b − m c }. Data also suggests factorization in the processes B → D * π + π − π − π 0 and B → D * ωπ − , however by themselves neither large N c nor large Q can account for this. Noting that the condition for large energy release inB 0 → D + π − is enforced by the SV limit, m b ≫ m b − m c ≫ Λ, we propose that the combined large N c and SV limits justify factorization in B → D ( * ) X. This combined limit is tested with the B → D * X inclusive decay spectrum measured by CLEO. We also give exact large N c relations among isospin amplitudes forB → D ( * ) X andB → D ( * )D( * ) X, which can be used to test factorization through exclusive or inclusive measurements. Predictions for the modes B → D ( * ) ππ, B → D ( * ) KK and B → D

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Section: Factorization Forb → D * Xmentioning

confidence: 99%

Testing factorization inB→D(*)Xdecays

et al. 2003

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“…We assume the NRCQM estimate of the vector form factor F (F = F 1 + F 2 + F 3 ) to be correct for the whole range of velocity transfers accessible in the physical decay 13 , and use it to obtain the flavor dependingξ cb function. Now by using Eq.…”

Section: A Nrcqm Form Factorsmentioning

confidence: 99%

“…[7]- [12]. From the experimental point of view there were also an important activity and CLEO and Belle collaborations have recent measurements of B → D * decays [13]- [15].…”

Section: Introductionmentioning

confidence: 99%

Combined nonrelativistic constituent quark model and heavy quark effective theory study of semileptonic decays ofΛbandΞbbaryons

2005

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We present the results of a nonrelativistic constituent quark model study of the semileptonic decays Λ. We work on coordinate space, with baryon wave functions recently obtained from a variational approach based on heavy quark symmetry . We develop a novel expansion of the electroweak current operator, which supplemented with heavy quark effective theory constraints, allows us to predict the baryon form factors and the decay distributions for all q 2 (or equivalently w) values accessible in the physical decays. Our results for the partially integrated longitudinal and transverse decay widths, in the vicinity of the w = 1 point, are in excellent agreement with lattice calculations. Comparison of our integrated Λ b −decay width to experiment allows us to extract the V cb Cabbibo-Kobayashi-Maskawa matrix element for which we obtain a value of |V cb | = 0.040±0.005 (stat)

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“…The coupling strength of the weak b → c transition is proportional to |V cb |, which has been measured in both inclusive semileptonic B decays [2] and in the exclusive transitions B → Dℓν [3][4][5][6] and B → D * ℓν [3,[6][7][8][9][10] (ℓ = e or µ and charge conjugate modes are implied). The inclusive and exclusive determinations of |V cb | rely on different theoretical calculations.…”

Section: Introductionmentioning

confidence: 99%

“…Finally, precise measurements of semileptonic B decays to charm are needed to further improve determinations of |V ub |, where B → D ( * ) ℓν decays are the principal background. [3,[7][8][9][10] and B → Dℓν [3][4][5]. The B → D * ℓν analyses involve reconstruction of the soft transition pion from the decay D * → Dπ, which is at the limit of detector acceptance; determination of the reconstruction efficiency for these pions introduces significant systematic uncertainty.…”

Section: Introductionmentioning

confidence: 99%

Measurements of the semileptonic decaysB¯→Dℓν¯andB¯→D

Aubert¹,

Bóna²,

Karyotakis³

et al. 2009

Phys. Rev. D

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Semileptonic B decays to DXℓν (ℓ = e or µ) are selected by reconstructing D 0 ℓ and D + ℓ combinations from a sample of 230 million Υ (4S) → BB decays recorded with the BABAR detector at the PEP-II e + e − collider at SLAC. A global fit to these samples in a 3-dimensional space of kinematic variables is used to determine the branching fractions B(B − → D 0 ℓν) = (2.34 ± 0.03 ± 0.13)% and B(B − → D * 0 ℓν) = (5.40 ± 0.02 ± 0.21)% where the errors are statistical and systematic, respectively. The fit also determines form factor parameters in a HQET-based parameterization, resulting in ρ 2 D = 1.20 ± 0.04 ± 0.07 for B → Dℓν and ρ 2 D * = 1.22 ± 0.02 ± 0.07 for B → D * ℓν. These values are used to obtain the product of the CKM matrix element |V cb | times the form factor at the zero 4 recoil point for both B → Dℓν decays, G(1)|V cb | = (43.1 ± 0.8 ± 2.3) × 10 −3 , and for B → D * ℓν decays, F(1)|V cb | = (35.9 ± 0.2 ± 1.2) × 10 −3 .

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Determination of |V| using the semileptonic decay →De

Cited by 36 publications

References 30 publications

Testing factorization inB→D(*)Xdecays

Testing factorization inB→D(*)Xdecays

Combined nonrelativistic constituent quark model and heavy quark effective theory study of semileptonic decays ofΛbandΞbbaryons

Measurements of the semileptonic decaysB¯→Dℓν¯andB¯→D

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