Observation of the Decay<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>B</mml:mi><mml:mi>s</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:msup><mml:mover accent="true"><mml:mi>K</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover><mml:mn>0</mml:mn></mml:msup></mml:math>

Pal, B.; Schwartz, A. J.; Abdesselam, A.; Adachi, I.; Aihara, H.; Asner, D. M.; Aushev, T.; Ayad, R.; Aziz, T.; Babu, V.; Badhrees, I.; Bahinipati, S.; Bakich, A. M.; Barberio, E.; Behera, P. K.; Bhardwaj, V.; Bhuyan, B.; Biswal, Jyoti Prakash; Bobrov, A.; Bożek, A.; Bračko, M.; Browder, T. E.; Červenkov, D.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chistov, R.; Cho, K.; Chobanova, V.; Choi, Y.; Cinabro, D.; Dalseno, J.; Dash, N.; Doležal, Z.; Drásal, Z.; Drutskoy, A.; Dutta, D.; Eidelman, S.; Farhat, H.; Fast, J. E.; Fulsom, B. G.; Gaur, V.; Garmash, A.; Gillard, R.; Goh, Y. M.; Goldenzweig, P.; Greenwald, D.; Grzymkowska, O.; Haba, J.; Hara, T.; Hayasaka, K.; Hayashii, H.; He, X.; Hou, W.-S.; Inami, K.; Ishikawa, A.; Iwasaki, Y.; Jacobs, W. W.; Jaeglé, I.; Jeon, H. B.; Joffe, D.; Joo, K. K.; Julius, T.; Kang, K. H.; Kato, E.; Kawasaki, T.; Kiesling, C.; Kim, D.Y.; Kim, H.J.; Kim, K.T.; Kim, M.J.; Kim, S.H.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Križan, P.; Krokovny, P.; Kuhr, T.; Kumar, R.; Kumita, T.; Kuzmin, A.; Kwon, Y. J.; Lee, I.S.; Li, C.H.; Li, H.; Li, L.; Gioi, L. Li; Libby, J.; Liventsev, D.; Lukin, P.; Luo, T.; Masuda, M.; Matvienko, D.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Mohanty, S.; Moll, A.; Moon, H. K.; Mori, Takashi; Mussa, R.; Nakano, E.; Nakao, M.; Nanut, T.; Natkaniec, Z.; Nayak, M.; Nisar, N. K.; Nishida, S.; Ogawa, S.; Okuno, S.; Pakhlov, P.; Pakhlova, G.; Park, C.W.; Park, H.; Paul, S.; Pedlar, T. K.; Pesántez, L.; Pestotnik, R.; Petrič, M.; Piilonen, L. E.; Pulvermacher, C.; Rauch, J.; Ribežl, E.; Ritter, M.; Rostomyan, A.; Ryu, S.; Sahoo, H.; Sakai, Y.; Sandilya, S.; Sanuki, T.; Sato, Y.; Savinov, V.; Schlüter, T.; Schneider, O.; Schnell, G.; Schwanda, C.; Seino, Y.; Senyo, K.; Seon, O.; Seong, I. S.; Shebalin, V.; Shibata, T. A.; Shiu, J. G.; Shwartz, B.; Simon, F.; Sohn, Y. S.; Sokolov, A.; Solovieva, E.; Stanič, S.; Starič, M.; Stypula, J.; Sumihama, M.; Sumiyoshi, T.; Tamponi, U.; Teramoto, Y.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Uno, S.; Urquijo, P.; Usov, Y.; Hulse, C. Van; Vanhoefer, P.; Varner, G.; Vinokurova, A.; Vossen, A.; Wagner, M. N.; Wang, C.H.; Wang, M.-Z.; Wang, X.L.; Watanabe, M.; Watanabe, Y.; Williams, K. M.; Won, E.; Yamaoka, J.; Yelton, J.; Yuan, C. Z.; Yusa, Y.; Zhang, Z.P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.

doi:10.1103/physrevlett.116.161801

“…where the first uncertainty is statistical, the second is systematic, and the third and fourth are due to the normalization channel branching fraction and the ratio of hadronization fractions f s =f d . This result is the most precise to date and is compatible with SM predictions [6][7][8][9] and the previous measurement from the Belle collaboration [14]. In the same combined fit used for the B 0 s → K 0 S K 0 S measurement, the fraction of B 0 → K 0 S K 0 S decays is also determined.…”

Section: Discussionsupporting

confidence: 86%

“…The decay B 0 s → K 0K0 was first observed by the Belle collaboration in 2016 [14]. The branching fraction was determined to be BðB 0 s → K 0K0 Þ ¼ ð19.6 þ5.8 −5.1 AE1.0AE2.0Þ × 10 −6 , where the first uncertainty is statistical, the second systematic and the third due to the uncertainty of the total number of produced B 0 s −B 0 s pairs.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the branching fraction of the decay Bs0→KS0KS0

Aaij¹,

Beteta²,

Ackernley³

et al. 2020

Phys. Rev. D

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4

0

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“…The Belle collaboration has recently announced the observation of the B 0 s → K 0 K 0 channel [65], resulting in the branching ratio…”

Section: Jhep03(2017)055mentioning

confidence: 99%

Towards new frontiers in the exploration of charmless non-leptonic B decays

Fleischer

¹

,

Vos

²

2017

J. High Energ. Phys.

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Non-leptonic B decays into charmless final states offer an important laboratory to study CP violation and the dynamics of strong interactions. Particularly interesting are B 0 s → K − K + and B 0 d → π − π + decays, which are related by the U -spin symmetry of strong interactions, and allow for the extraction of CP-violating phases and tests of the Standard Model. The theoretical precision is limited by U -spin-breaking corrections and innovative methods are needed in view of the impressive future experimental precision expected in the era of Belle II and the LHCb upgrade. We have recently proposed a novel method to determine the B 0decays are a new ingredient and the theoretical situation is very favourable. We discuss this strategy in detail, with a focus on penguin contributions as well as exchange and penguin-annihilation topologies which can be probed by a variety of non-leptonic B decays into charmless final states. We show that a theoretical precision as high as O(0.5 • ) for φ s can be attained in the future, thereby offering unprecedented prospects for the search for new sources of CP violation. 7 Prospects of the new strategy 42 8 Conclusions 462 Decay amplitudes and CP asymmetries TopologiesThe non-leptonic decay B 0 d → π − π + , characterized by ab →ūud transition, is governed by the decay topologies depicted in figure 1. The decay amplitude is dominated by contributions from the tree (T ) and penguin (P ) topologies, but also receives contributions from exchange (E) and penguin-annihilation (P A) topologies. In the SM, we have [4]2.1) which is only sensitive to non-factorizable U -spin-breaking corrections because the factorizable contributions cancel in these ratios of amplitudes. Contrary, the U -spin relation C = C (2.10) is affected by both factorizable and non-factorizable U -spin-breaking effects. JHEP03(2017)055 Current [21, 32] Upgrade [3]A dir CP (B d → π − π + ) −0.31 ± 0.05 −0.31 ± 0.008A mix CP (B d → π − π + ) 0.66 ± 0.06 0.66 ± 0.008A dir CP (B s → K − K + ) 0.14 ± 0.11 0.087 ± 0.008A mix CP (B s → K − K + ) −0.30 ± 0.13 −0.19 ± 0.008 1 To be conservative, we consider only the largest uncertainty for K in eq. (2.28).

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“…The Belle collaboration has recently announced the observation of the B 0 s → K 0 K 0 channel [63], resulting in the branching ratio…”

Section: Cp Asymmetrymentioning

confidence: 99%

Towards New Frontiers in the Exploration of Charmless Non-Leptonic $B$ Decays

Fleischer,

Jaarsma,

Vos

2016

Preprint

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Non-leptonic B decays into charmless final states offer an important laboratory to study CP violation and the dynamics of strong interactions. Particularly interesting are B 0 s → K − K + and B 0 d → π − π + decays, which are related by the Uspin symmetry of strong interactions, and allow for the extraction of CP-violating phases and tests of the Standard Model. The theoretical precision is limited by U -spin-breaking corrections and innovative methods are needed in view of the impressive future experimental precision expected in the era of Belle II and the LHCb upgrade. We have recently proposed a novel method to determine the B 0 s -B0 s mixing phase φ s from the B 0decays are a new ingredient and the theoretical situation is very favourable. We discuss this strategy in detail, with a focus on penguin contributions as well as exchange and penguin-annihilation topologies which can be probed by a variety of non-leptonic B decays into charmless final states. We show that a theoretical precision as high as O(0.5 • ) for φ s can be attained in the future, thereby offering unprecedented prospects for the search for new sources of CP violation.

show abstract

Observation of the DecayBs0→K0K¯0

Cited by 18 publications

References 27 publications

Measurement of the branching fraction of the decay Bs0→KS0KS0

Measurement of the branching fraction of the decay Bs0→KS0KS0

Towards new frontiers in the exploration of charmless non-leptonic B decays

Towards New Frontiers in the Exploration of Charmless Non-Leptonic $B$ Decays

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