article · Physical Review Letters · 2013

Measurement of Form-Factor-Independent Observables in the Decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mrow><mml:mo>*</mml:mo><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">+</mml:mo></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">−</mml:mo></mml:msup></mml:math>

R. Aaij, B. Adeva, M. Adinolfi, C. Adrover, A. A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Álvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. Anderlini, J. Anderson, R. Andreassen, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, C. Baesso, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, Thomas Bauer, A. Bay, J. Beddow, F. Bedeschi, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy and 607 more

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Abstract

We present a measurement of form-factor-independent angular observables in the decay B(0)→K*(892)(0)μ(+)μ(-). The analysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb(-1), collected by the LHCb experiment in pp collisions at a center-of-mass energy of 7 TeV. Four observables are measured in six bins of the dimuon invariant mass squared q² in the range 0.1<q²<19.0 GeV²/c(4). Agreement with recent theoretical predictions of the standard model is found for 23 of the 24 measurements. A local discrepancy, corresponding to 3.7 Gaussian standard deviations is observed in one q² bin for one of the observables. Considering the 24 measurements as independent, the probability to observe such a discrepancy, or larger, in one is 0.5%.

Cite this paper

APA 7

Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A. A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Á., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., Anderlini, L., Anderson, J., Andreassen, R., . . . Berezhnoy, A. (2013). Measurement of Form-Factor-Independent Observables in the Decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mrow><mml:mo></mml:mo><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">+</mml:mo></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">−</mml:mo></mml:msup></mml:math>. Physical Review Letters, 111*(19), 191801. https://doi.org/10.1103/physrevlett.111.191801

MLA 9

Aaij, R., et al. “Measurement of Form-Factor-Independent Observables in the Decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mrow><mml:mo></mml:mo><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">+</mml:mo></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">−</mml:mo></mml:msup></mml:math>.” Physical Review Letters*, vol. 111, no. 19, 2013, p. 191801, https://doi.org/10.1103/physrevlett.111.191801.

Chicago

Aaij, R., B. Adeva, M. Adinolfi, C. Adrover, A. A. Affolder, Z. Ajaltouni, J. Albrecht, et al. 2013. “Measurement of Form-Factor-Independent Observables in the Decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mrow><mml:mo></mml:mo><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">+</mml:mo></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">−</mml:mo></mml:msup></mml:math>.” Physical Review Letters* 111 (19): 191801. https://doi.org/10.1103/physrevlett.111.191801.

Harvard

Aaij, R. et al. (2013) ‘Measurement of Form-Factor-Independent Observables in the Decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mrow><mml:mo></mml:mo><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">+</mml:mo></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">−</mml:mo></mml:msup></mml:math>’, Physical Review Letters*, 111(19), p. 191801. Available at: https://doi.org/10.1103/physrevlett.111.191801.

BibTeX

@article{aaij2013measurement,
  title = {{Measurement of Form-Factor-Independent Observables in the Decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mrow><mml:mo>*</mml:mo><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">+</mml:mo></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo mathvariant="bold">−</mml:mo></mml:msup></mml:math>}},
  author = {Aaij, R. and Adeva, B. and Adinolfi, M. and Adrover, C. and Affolder, A. A. and Ajaltouni, Z. and Albrecht, J. and Alessio, F. and Alexander, M. and Ali, S. and Alkhazov, G. and Cartelle, P. Álvarez and Alves, A. A. and Amato, S. and Amerio, S. and Amhis, Y. and Anderlini, L. and Anderson, J. and Andreassen, R. and Andrews, J. E. and Appleby, R. B. and Gutierrez, O. Aquines and Archilli, F. and Artamonov, A. and Artuso, M. and Aslanides, E. and Auriemma, G. and Baalouch, M. and Bachmann, S. and Back, J. J. and Baesso, C. and Balagura, V. and Baldini, W. and Barlow, R. J. and Barschel, C. and Barsuk, S. and Barter, W. and Bauer, Thomas and Bay, A. and Beddow, J. and Bedeschi, F. and Bediaga, I. and Belogurov, S. and Belous, K. and Belyaev, I. and Ben-Haim, E. and Bencivenni, G. and Benson, S. and Benton, J. and Berezhnoy, A. and others},
  journal = {Physical Review Letters},
  volume = {111},
  number = {19},
  pages = {191801},
  year = {2013},
  doi = {10.1103/physrevlett.111.191801}
}

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