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Электронный каталог: Aaij, R. - Precision Measurement of the *X*0&sub(b) Baryon Lifetime
Aaij, R. - Precision Measurement of the *X*0&sub(b) Baryon Lifetime
Статья
Автор: Aaij, R.
Physical Review D: Precision Measurement of the *X*0&sub(b) Baryon Lifetime
б.г.
ISBN отсутствует
Автор: Aaij, R.
Physical Review D: Precision Measurement of the *X*0&sub(b) Baryon Lifetime
б.г.
ISBN отсутствует
На полку
Статья
Aaij, R.
Precision Measurement of the *X*0&sub(b) Baryon Lifetime / R.Aaij, K.Ivshin, A.Solovev, [LHCb Collab.]. – Text : electronic // Physical Review D. – 2025. – Vol. 112, No. 5. – P. 052012. – URL: https://doi.org/10.1103/sllb-p3j8. – Bibliogr.: 44.
A sample of pp collision data, corresponding to an integrated luminosity of 5.4 fb&sup(−1) and collected by the LHCb experiment during LHC Run 2, is used to measure the ratio of the lifetime of the Ξ0 b baryon to that of the Λ*0&sub(b) baryon, r&sub(τ) ≡ τ&sub(Ξ*0&sub(b)) =τΛ*0&sub(b) . The value r&sup(Run2)&sub(τ)=1.004 *( 0.009 *( 0.006 is obtained, where the first uncertainty is statistical and the second systematic. This value is averaged with the corresponding value from Run 1 to obtain r&sub(τ)=1.004 *( 0.008 *( 0.005. Multiplying by the known value of the Λ*0&sub(b) lifetime yields τΞ*0&sub(b)=1.475 *( 0.012 *( 0.008 *( 0.009 ps, where the last uncertainty is due to the limited knowledge of the Λ*0&sub(b) lifetime. This measurement improves the precision of the current world average of the Ξ*0&sub(b) lifetime by about a factor of two, and is in good agreement with the most recent theoretical predictions.
ОИЯИ = ОИЯИ (JINR)2025
Aaij, R.
Precision Measurement of the *X*0&sub(b) Baryon Lifetime / R.Aaij, K.Ivshin, A.Solovev, [LHCb Collab.]. – Text : electronic // Physical Review D. – 2025. – Vol. 112, No. 5. – P. 052012. – URL: https://doi.org/10.1103/sllb-p3j8. – Bibliogr.: 44.
A sample of pp collision data, corresponding to an integrated luminosity of 5.4 fb&sup(−1) and collected by the LHCb experiment during LHC Run 2, is used to measure the ratio of the lifetime of the Ξ0 b baryon to that of the Λ*0&sub(b) baryon, r&sub(τ) ≡ τ&sub(Ξ*0&sub(b)) =τΛ*0&sub(b) . The value r&sup(Run2)&sub(τ)=1.004 *( 0.009 *( 0.006 is obtained, where the first uncertainty is statistical and the second systematic. This value is averaged with the corresponding value from Run 1 to obtain r&sub(τ)=1.004 *( 0.008 *( 0.005. Multiplying by the known value of the Λ*0&sub(b) lifetime yields τΞ*0&sub(b)=1.475 *( 0.012 *( 0.008 *( 0.009 ps, where the last uncertainty is due to the limited knowledge of the Λ*0&sub(b) lifetime. This measurement improves the precision of the current world average of the Ξ*0&sub(b) lifetime by about a factor of two, and is in good agreement with the most recent theoretical predictions.
ОИЯИ = ОИЯИ (JINR)2025
