First Measurement of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">B</mml:mi><mml:mspace /><mml:mo>→</mml:mo><mml:mspace /><mml:mi>π</mml:mi><mml:mi>ℓ</mml:mi><mml:mi>ν</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">B</mml:mi><mml:mspace /><mml:mo>→</mml:mo><mml:mspace /><mml:mi>ρ</mml:mi><mml:mo>(</mml:mo><mml:mi>ω</mml:mi><mml:mo>)</mml:mo><mml:mi>ℓ</mml:mi><mml:mi>ν</

Alexander, J.; Bebek, C.; Berger, B. E.; Berkelman, K.; Bloom, K.; Cassel, D. G.; Cho, H. A.; Coffman, D. M.; Crowcroft, D. S.; Dickson, M.; Drell, P. S.; Dumas, D. J.P.; Ehrlich, R.; Elia, R.; Gaidarev, P.; Gittelman, B.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Jones, C. D.; Jones, S. L.; Kandaswamy, J.; Katayama, N.; Kim, P. C.; Kreinick, D. L.; Lee, T.; Liu, Y.; Ludwig, G. S.; Masui, J.; Mevissen, J.; Mistry, N. B.; Ng, C. R.; Nordberg, E.; Patterson, J. R.; Peterson, D.; Riley, D.; Soffer, A.; Ward, C. P.; Avery, P.; Prescott, C.; Yang, S.; Yelton, J.; Brandenburg, G.; Briere, R. A.; Liu, T.; Saulnier, M.; Wilson, Richard; Yamamoto, H.; Browder, T. E.; Li, F.; Rodriguez, J. L.; Bergfeld, T.; Eisenstein, B. I.; Ernst, J.; Gladding, G. E.; Gollin, G. D.; Karliner, I.; Palmer, M.; Selen, M.; Thaler, J. J.; Edwards, K. W.; Ogg, M.; Bellerive, A.; Britton, D.; Janicek, R.; MacFarlane, D. B.; McLean, K. W.; Patel, P. M.; Sadoff, A. J.; Ammar, R.; Baringer, P.; Bean, A.; Besson, D.; Coppage, D.; Copty, N.; Davis, R.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, N.; Anderson, S.; Kubota, Y.; Lattery, M.; O’Neill, J. J.; Patton, S.; Poling, R.; Riehle, T.; Savinov, V.; Smith, A. J. S.; Alam, M. S.; Athar, S. B.; Kim, I. J.; Ling, Z.; Mahmood, A. H.; Severini, H.; Timm, S.; Wappler, F. R.; Duboscq, J. E.; Fujino, D.; Fulton, R.; Gan, K. K.; Honscheid, K.; Kagan, H.; Kass, R.; Lee, J.; Sung, M.; Undrus, A.; Wanke, R.; White, C.; Wolf, A.; Zoeller, M. M.; Nemati, B.; Richichi, S. J.; Ross, W. R.; Skubic, P.; Wood, M.; Bishai, M.; Fast, J. E.; Gerndt, E.; Hinson, J. W.; Miller, D. H.; Shibata, E. I.; Shipsey, I. P. J.; Yurko, M.; Battle, M.; Gibbons, L.; Johnson, S. D.; Kwon, Y. J.; Roberts, S.; Sparks, K.; Thorndike, E. H.; Jessop, C.; Lingel, K.; Marsiske, H.; Перл, М.; Schaffner, S. F.; Wang, R.; Coan, T. E.; Fadeyev, V.; Korolkov, I.; Maravin, Y.; Narsky, I.; Shelkov, V.; Staeck, J.; Stroynowski, R.; Volobouev, I.; Ye, J.; Artuso, M.; Efimov, A.; Gao, M.; Goldberg, M.; Greene, R.; He, D.; Köpp, S.; Moneti, G. C.; Mountain, R.; Mukhin, Y.; Skwarnicki, T.; Stone, S.; Xing, X.; Bartelt, J.; Csorna, S. E.; Jain, V.; Márka, S.; Freyberger, A.; Gibaut, D.; Kinoshita, K.; Lai, I. C.; Pomianowski, P.; Schrenk, S.; Bonvicini, G.; Cinabro, D.; Barish, B. C.; Chadha, M.; Chan, S.; Eigen, G.; Miller, J. S.; O’Grady, C. P.; Śchmidtler, M.; Urheim, J.; Weinstein, A. J.; Würthwein, F.; Asner, D. M.; Athanas, M.; Bliss, Daniel W.; Brower, W. S.; Masek, G.; Paar, H. P.; Gronberg, J.; Korte, C. M.; Kutschke, R.; Lange, D. J.; Menary, S.; Morrison, R. J.; Nakanishi, S.; Nelson, H. N.; Nelson, T. K.; Qiao, C. F.; Richman, J.; Roberts, D. A.; Rýd, A.; Tajima, H.; Witherell, M. S.; Balest, R.; Behrens, B. H.; Cho, K.; Ford, W. T.; Lohner, M.; Park, H.; Rankin, P.; Roy, J.; Smith, J. G.

doi:10.1103/physrevlett.77.5000

Cited by 131 publications

(92 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2. In accord with our previous arguments, it is easily seen to be subleading 2 The fact that the b quark distribution function is not relevant for large q 2 was pointed out in [20] in the context ofB → X s + − decay. …”

supporting

confidence: 59%

“…The perturbative uncertainties are still negligible, while the uncertainty due to a ±50 MeV error inΛ and unknown dimension six matrix elements increase to ±14% and ±13%, respectively. (This uncertainty may be reduced using data on the rare decayB → X s + − in the large q 2 region, q 0 (GeV ) 2 as discussed below.) Another possible method to compute F (q 2 0 ) uses the upsilon expansion [24].…”

Section: Decaymentioning

confidence: 99%

“…The first extraction of |V ub | from experimental data relied on a study of the lepton energy spectrum in inclusive charmless semileptonic B decay [1]. Recently |V ub | was also measured from exclusive semileptonic B → ρ ν andB → π ν decay [2], and from inclusive decays using the reconstruction of the invariant mass of the hadronic final state [3].…”

mentioning

confidence: 99%

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A model independent determination of |Vub|

2000

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It is shown that measuring the lepton invariant mass spectrum in inclusive semileptonicB → X u ν decay yields a model independent determination of |V ub |. Unlike the lepton energy and hadronic invariant mass spectra, nonperturbative effects are only important in the resonance region, and play a parametrically suppressed role when dΓ/dq 2 is integrated over q 2 > (m B − m D ) 2 , which is required to eliminate the charm background. Perturbative and nonperturbative corrections are presented to order α 2 s β 0 and Λ 2 QCD /m 2 b , and the Λ 3 QCD /m 3 b corrections are used to estimate the uncertainty in our results. The utility of theB → X s + − decay rate above the ψ(2S) resonance is discussed.

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supporting

confidence: 59%

Section: Decaymentioning

confidence: 99%

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A model independent determination of |Vub|

2000

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show abstract

“…Previous measurements of |V ub | at the Υ(4S) resonance have used either a lepton endpoint technique (selecting events with lepton energies beyond the kinematic limit for B → Dℓν decays) [37], or the reconstruction of specific exclusive final states (B → πℓν or ρℓν) [38]. The former suffers from significant dependence on the modelling of the lepton energy spectrum, whilst the latter requires an estimate of the decay form factor in a regime where HQET is not applicable.…”

Section: Measurements Of |V Ub |mentioning

confidence: 99%

B physics at the Z⁰resonance

Hawkings

Willocq

2001

J. Phys. G: Nucl. Part. Phys.

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“…CLEO has measured the decay rates for the exclusive final states πℓν and ρℓν [34]. The model of Korner and Schuler (KS) was ruled out by the measured ratio of ρ/π [29].…”

Section: Status Of Ckm Matrix Elementsmentioning

confidence: 99%