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  • Abdallah, J (author)

Measurement of the Lambda(0)(b) decay form factor

  • Article/chapterEnglish2004

Publisher, publication year, extent ...

  • Elsevier BV,2004

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:33d9cd10-f378-4b81-97f5-63e7db40d40b
  • https://lup.lub.lu.se/record/284185URI
  • https://doi.org/10.1016/j.physletb.2004.01.086DOI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • The form factor of A(o)(b) baryons is estimated using 3.46 x 10(6) hadronic Z decays collected by the DELPM experiment between 1992 and 1995. Charmed A(c)(+) baryons fully reconstructed in the pK(-)pi(+), pK(o)(s), and Api(+)pi(+)pi(-) modes, are associated to a c S lepton with opposite charge in order to select A(o)(b) --> A(c)(+)l(-)v(l) decays. From a combined likelihood and event rate fit to the b C distribution of the Isgur-Wise variable w, and using the Heavy Quark Effective Theory (HQET), the slope of the b-baryon form factor is measured to be p(2)=2.03+/-0.46(stat)(-1.00)(+0.72)(syst). The exclusive semileptonic branching fraction Br(A(b)(o) --> A(c)(+)l(-)v(l)) can be derived from p(2) and is found to be (5.0(-0.8)(+1.1)(stat)(-1.2)(+1.6) (syst))%. Limits on other branching fractions are also obtained. (C) 2004 Published by Elsevier B.V.

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  • Abreu, P (author)
  • Adam, W (author)
  • Adzic, P (author)
  • Albrecht, T (author)
  • Alderweireld, T (author)
  • Alemany-Fernandez, R (author)
  • Allmendinger, T (author)
  • Allport, PP (author)
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  • Ask, StefanLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)quar-sas (author)
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  • In:Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics: Elsevier BV585:1-2, s. 63-840370-2693

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Abdallah, J
Abreu, P
Adam, W
Adzic, P
Albrecht, T
Alderweireld, T
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Allport, PP
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Amato, S
Anashkin, E
Andreazza, A
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Antilogus, P
Apel, WD
Arnoud, Y
Ask, Stefan
Asman, B
Augustin, JE
Augustinus, S
Baillon, P
Ballestrero, A
Bambade, P
Barbier, R
Bardin, D
Barker, G
Baroncelli, A
Battaglia, M
Baubillier, M
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Benekos, N
Benvenuti, A
Berat, C
Berggren, M
Berntzon, L
Bertrand, D
Besancon, M
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Blom, M
Bluj, M
Bonesini, M
Boonekamp, M
Booth, PSL
Borisov, G
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Calvi, M
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Canale, V
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da Silva, T
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Wicke, D
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Winter, M
Witek, M
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Zalewski, P
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Zhuravlov, V
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